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1,865,548 | How to migrate DNS records from CloudFlare to AWS Route53 with Terraform&Terragrunt | Possible reasons There are multiple reasons for such migration. The most common are the... | 0 | 2024-05-26T11:26:54 | https://dev.to/yyarmoshyk/how-to-migrate-dns-records-from-cloudflare-to-aws-route53-with-terraformterragrunt-2ebj | dns, route53, migration, awswaf | ## Possible reasons
There are multiple reasons for such migration. The most common are the following:
1. You'd like to use external-dns controller in your EKS cluster to manage DNS records automatically for you, however the CloudFlare support is still in beta and you don't want to use it for production workloads.
2. You want to take the advantages of [AWS WebApplication Firewall](https://aws.amazon.com/waf/) instead of CloudFlare WAF.
There might be other reasons but I faced the 2 in the most resent project.
You'll need to put either Cloudfront distribution or ApplicationLoadBalancer (ALB) in front of your web application to use AWS WAF because it provides the application level protection so it can not be enabled for NetworkLoadBalancer (NLB)
## Migration flow
1. Read all the records from the existing CloudFlare DNS zone.
You can re-use the python script I've prepared. The automation is available in [github.com/yyarmoshyk/read-cloudflare-dns-records](https://github.com/yyarmoshyk/read-cloudflare-dns-records)
The readme file describes how to use it.
2. Create DNS zone in AWS
You don't need to invest much efforts into this. Feel free to re-use the existing [terraform-aws-route53](https://github.com/terraform-aws-modules/terraform-aws-route53/tree/master/modules/zones) community module
3. Create DNS records in AWS
The script above produces the json output that can be used as an input for the [terraform-aws-route53/records](https://github.com/terraform-aws-modules/terraform-aws-route53/tree/master/modules/records) terraform module
```json
{
"name": "example.com",
"type": "A",
"ttl": 300,
"records": [
"10.10.10.10"
]
}
```
The output should be saved into the file. Next the contents can be read with terrafrom/terragrunt and specified as inputs to the [terraform-aws-route53/records](https://github.com/terraform-aws-modules/terraform-aws-route53/tree/master/modules/records) terrafrom module
```
records_jsonencoded = jsondecode(file("dns_records.json"))
```
4. Update NameServer configuration in your current DNS registrar.
For this you'll need to refer to the documentation of the DNS provider where your domain is registered.
I will not cover running `terragrunt apply` procedure here. There are many documents about this over the internet.
## Closing words
Most of the time you'll spend on creating the API token in CloudFlare and injecting the route53 provisioning into your existing IaaC structure.
Basically we extract the data from cloudflare, convert it into proper format, next create all records with terragrunt or terraform. | yyarmoshyk |
1,865,547 | Unveiling the Exceptional Talent: "Rosewood" TV Show Cast | Dive into the world of "Rosewood" and discover the mesmerizing performances of its cast. Led by... | 0 | 2024-05-26T11:25:45 | https://dev.to/theon_greyjoy_eb641583a84/unveiling-the-exceptional-talent-rosewood-tv-show-cast-2kp | Dive into the world of "Rosewood" and discover the mesmerizing performances of its cast. Led by Russell Hornsby as Dr. Beaumont Rosewood Jr., the show's ensemble brings depth and authenticity to every scene. Jaina Lee Ortiz shines as Detective Annalise Villa, while Morris Chestnut adds a layer of complexity as her ex-husband and fellow detective. Together, they form a dynamic team, solving intricate cases in Miami's vibrant backdrop. With each episode, the [Rosewood TV show cast](https://www.hbtrl.com/articles/rosewood-tv-show-cast/) delivers stellar performances, drawing viewers into a world of crime, mystery, and compelling storytelling. | theon_greyjoy_eb641583a84 | |
1,865,546 | How to Execute SQL Commands In Another File from the PostgreSQl psql shell in Windows | The Problem Suppose you download an sql file containing some sql instructuions (such as... | 0 | 2024-05-26T11:23:25 | https://dev.to/johnakindipe/how-to-execute-sql-commands-in-another-file-from-the-postgresql-psql-shell-in-windows-ppa | postgres, commandline, sql | ## The Problem
Suppose you download an sql file containing some sql instructuions (such as dummy data from mockaroo), the options you have to run these commands in postgres include copying the commands in the file over to the psql shell manually and running them. This approach is workable if the file contains only a few commands, however, say the file contains hundreds of lines of sql commands, you realize this option doesn't scale with size.
## The Solution
Thankfully, you can execute SQL commands located in another file on your pc straight from the psql shell. The command to do this is `\i filepath to sql file`
####To get the filepath.
1. Open the file in a code editor such as VSCode
2. Right click on the file.
3. Select the copy path option from the dropdown menu.
4. Then, open your psql shell and run this command `\i filepath to sql file`, and it’s more than likely you’ll get the following output:
The solution to the above is quite simple really, very simple infact.
##Let’s troubleshoot
It may be this file was **downloaded** onto your pc and needs to have necessary permissions.
1. Open the file location
2. Right-click on the file and click on properties in the drop down menu 
3. Click on unblock just near the lower right edge of the _properties dialogue box_ and select the apply option (it will become clickable) 
Now that we’ve unblocked the file, we can run the command again in our psql shell and see what happens.
Seems like we're still getting the same error as before. What could be the issue?
##The Solution
I did mention that the solution is simple, and it is quite simple, **to the initiated**. The uninitiated might spend hours or days of debugging trying to figure out what the problem is. You may even give up at some point and just manually copy the sql commands and run them directly in the psql shell. Well, let's save ourselves any ache:
The simplicity of the solution is quite interesting. All we need to do is simply change the direction of our slashes from “\” to “/” and the command works as shown below.
The solution to this problem stems from how the file paths in windows differs from what the psql shell expects and all we need to do is conform to what psql wants, and that my folks is the solution.
---
####This article does assume that:
The user on the psql shell has access to the sql file we are trying to execute code from. Otherwise, all of the above might not apply and it may be necessary to get permission to access the file in the first place.
---
Kindly share this article if you found it useful. Cheers 😊
| johnakindipe |
1,865,545 | Database Caching for Beginners | In today's fast-paced digital world, web applications are expected to deliver high performance and... | 0 | 2024-05-26T11:23:24 | https://dev.to/imabhinavdev/database-caching-for-beginners-15hj | database, systemdesign, beginners, webdev | In today's fast-paced digital world, web applications are expected to deliver high performance and responsiveness to users. One critical aspect of achieving this goal is optimizing database performance, as database queries often represent a bottleneck in application performance. Database caching emerges as a powerful technique to address this challenge by reducing the load on database servers and improving response times.
Database caching involves storing frequently accessed data in temporary storage, known as a cache, to eliminate the need for repeated queries to the database. By caching data closer to the application layer, caching solutions can significantly enhance performance and scalability. In this comprehensive guide, we'll explore the intricacies of database caching, including how it works, popular caching solutions like Redis and Memcached, implementation strategies, benefits, considerations, and real-world scenarios.
## How Database Caching Works
At the core of database caching lies the principle of minimizing database round-trips by storing frequently accessed data in a cache. When a user requests data from the application, the caching layer intercepts the request and checks if the requested data is already cached. If the data is found in the cache, it's retrieved and returned to the application without querying the database. This process, known as cache hit, eliminates the overhead of querying the database and significantly reduces response times.
However, if the requested data is not found in the cache, a cache miss occurs, and the caching layer must retrieve the data from the database. Upon fetching the data, the caching layer stores it in the cache for future use, thereby optimizing subsequent requests for the same data. By caching frequently accessed data, database caching minimizes the workload on the database server, improves application performance, and enhances scalability.
## Redis: A Powerful Caching Solution
Redis stands out as one of the most popular and versatile caching solutions available today. It is an open-source, in-memory data structure store known for its exceptional performance, rich feature set, and robustness. Redis supports various data structures, including strings, hashes, lists, sets, and sorted sets, making it suitable for a wide range of caching use cases.
One of Redis's key strengths lies in its ability to serve as more than just a caching solution. It can function as a primary data store, a message broker, a job queue, and much more. Additionally, Redis offers advanced features such as replication, persistence, pub/sub messaging, Lua scripting, and clustering, making it a preferred choice for demanding caching requirements.
## Memcached: A High-Performance Caching System
Memcached represents another popular caching system widely used in web application environments. It is a simple, high-performance, distributed memory object caching system designed to accelerate dynamic web applications by alleviating database load. Memcached stores data in memory and serves as a key-value store, enabling rapid data access with minimal latency.
Memcached's simplicity and efficiency make it an attractive option for caching frequently accessed data in distributed environments. It operates as a distributed caching system, allowing multiple cache servers to collaborate and share cached data. Memcached's architecture facilitates horizontal scaling, meaning you can add more cache servers to accommodate increasing application load and traffic.
## Implementing Database Caching: Best Practices and Strategies
Implementing database caching requires careful planning, consideration, and adherence to best practices. Here's a step-by-step guide to effectively implement database caching in your web applications:
### Step 1: Identify Frequently Accessed Data
Before implementing caching, analyze your application's data access patterns to identify frequently accessed data or database queries. Focus on areas where caching can provide the most significant performance gains, such as read-heavy operations or resource-intensive queries.
### Step 2: Choose a Caching Solution
Select a caching solution that aligns with your application's requirements, performance goals, and scalability needs. Consider factors such as data types, storage capacity, scalability, reliability, and ease of integration. Evaluate both Redis and Memcached based on their features, performance benchmarks, and community support.
### Step 3: Integrate Caching into Your Application
Integrate caching seamlessly into your application code to leverage its benefits effectively. Modify your application logic to check the cache before querying the database and update the cache when data is modified or invalidated. Implement cache invalidation strategies to ensure that cached data remains consistent with the database.
### Step 4: Configure Caching Parameters
Fine-tune caching parameters such as expiration time, eviction policies, cache size, and data serialization to optimize performance and resource utilization. Experiment with different configurations to find the optimal balance between cache hit rate, memory usage, and data freshness.
## Real-World Scenario: E-Commerce Platform
Let's consider a real-world scenario to illustrate the importance of database caching in optimizing application performance. Suppose you're developing an e-commerce platform that experiences high traffic during peak shopping seasons. The platform allows users to browse products, view product details, add items to the shopping cart, and place orders.
In this scenario, database caching can significantly improve the platform's performance and scalability, especially during peak traffic periods. Here's how database caching can be implemented in various components of the e-commerce platform:
### Product Catalog:
- Cache frequently accessed product listings, categories, and attributes to reduce database queries and speed up page load times.
- Implement cache warming strategies to pre-load popular product data into the cache during off-peak hours, ensuring rapid access during peak traffic.
### Product Details:
- Cache product details, images, pricing information, and inventory status to minimize database round-trips when users view product details.
- Employ caching strategies to invalidate and refresh product details cache when product information changes or inventory levels are updated.
### Shopping Cart:
- Cache shopping cart contents and session data to maintain user session state and reduce the load on the database server.
- Implement cache partitioning or sharding to distribute shopping cart data across multiple cache servers and prevent bottlenecks.
### Order Processing:
- Cache frequently accessed order history, customer details, and transaction data to accelerate order processing and checkout.
- Utilize cache-based locking mechanisms to prevent race conditions and ensure data consistency during concurrent order updates.
By strategically implementing database caching throughout the e-commerce platform, you can enhance performance, scalability, and user experience, even during peak traffic periods.
## Benefits of Database Caching
Database caching offers numerous benefits for web applications, including:
- **Improved Performance:** Caching reduces database load and speeds up data retrieval, leading to faster response times and better user experience.
- **Scalability:** Caching solutions like Redis and Memcached support horizontal scaling, allowing you to add more cache servers to handle increased load.
- **Reduced Database Load:** By serving cached data from memory, caching reduces the number of queries and transactions sent to the database, thereby lowering database server load.
## Considerations and Best Practices
While implementing database caching, consider the following best practices and considerations:
- **Cache Invalidation:** Implement cache invalidation strategies to ensure that cached data remains consistent with the database and reflects the latest updates.
- **Eviction Policies:** Choose appropriate eviction policies to manage cache size and prioritize data retention based on access patterns and expiration criteria.
- **Data Serialization:** Serialize complex data structures before storing them in the cache to ensure compatibility, efficiency, and seamless retrieval.
- **Monitoring and Maintenance:** Regularly monitor cache performance, usage, and health metrics to detect issues, optimize configuration, and prevent cache-related bottlenecks.
## Conclusion
In conclusion, database caching is a fundamental technique for optimizing the performance, scalability, and responsiveness of web applications. By caching frequently accessed data closer to the application layer, caching solutions like Redis and Memcached significantly reduce the load on database servers and enhance overall system performance. Through careful planning, implementation, and adherence to best practices, you can leverage database caching effectively to achieve faster response times, improved scalability, and enhanced user experience.
In today's competitive digital landscape, where users expect instant access to information and seamless browsing experiences, database caching emerges as a critical component of application optimization strategies. Whether you're developing an e-commerce platform, a social networking site, or an enterprise application, incorporating database caching can provide tangible benefits in terms of performance, scalability, and resource efficiency.
As you embark on your journey to implement database caching in your applications, remember to evaluate your caching requirements, choose the appropriate caching solution, and fine-tune caching parameters to optimize performance and resource utilization. By embracing caching best practices, monitoring cache performance, and adapting to changing application needs, you can harness the full potential of database caching to deliver exceptional user experiences and stay ahead in today's dynamic digital landscape. | imabhinavdev |
1,865,540 | The Grasshopper's Rebellion | The grasshopper and the ants It was time for the weekly team meeting. Michael handed out... | 0 | 2024-05-26T11:09:57 | https://dev.to/offcode/the-grasshoppers-rebellion-4p8d | agile, leadership, creativity | ## The grasshopper and the ants
It was time for the weekly team meeting. Michael handed out printed copies of his presentation slides. There were many pages. Samantha felt how thick the stack was - 27 pages. She sighed quietly to herself.
Michael began speaking about his presentation. Samantha nodded, pretending to listen carefully. But soon, her pen started moving by itself to draw on her notepad. Lines and shapes appeared.
Samantha drew a bright green grasshopper playing a tiny violin. Around the grasshopper, she drew twelve ants marching in a line. The ants wore business suits and carried briefcases. It looked silly and funny. Samantha fit her drawings inside the boxes on a printed Excel spreadsheet page.
Samantha's coworkers saw her doodling from the corners of their eyes. They smiled a little. Everyone knew Samantha's habit of doodling during meetings. They thought it was amusing, as long as Michael didn't notice.
"Any other questions before we continue?" Michael's voice droned on.
Suddenly, Michael's phone rang and made a buzzing sound. "Excuse me, I need to take this call." He left the meeting room. The coworkers looked at each other.
Samantha kept doodling. She added a family of turtles to her scene. She did not see Michael come back into the room.
"Sorry about that interruption, it was -" Michael stopped speaking. He looked at Samantha's notepad. Her colorful doodles were out in the open for anyone to see.
No one said anything for an awkward, uncomfortable moment. Michael stared at the grasshopper playing violin and the ants dressed in suits. Samantha's coworkers waited silently to see how Michael would react.
But Michael just cleared his throat. "Well then, where were we..." He acted like nothing unusual happened.
The meeting continued. But Michael had clearly seen Samantha's doodles. Samantha did not know if he was okay with it or not.
## Breaking the silence
The meeting was finally over. People started gathering their things and leaving the room. Samantha collected her notepad and pen. She hadn't touched her pen since Michael caught her doodling.
Samantha was about to leave too, but Michael made a small gesture with his hand, asking her to stay behind. Some of her teammates noticed and glanced at her curiously as they filed out.
Soon, it was just Samantha and Michael alone in the room. An awkward silence hung in the air.
"So...why were you drawing during the presentation?" Michael asked, breaking the tension.
Samantha didn't respond at first, unsure of how to explain herself.
"Do you not find value in these status meetings?" Michael pressed. "The presentation covers important priorities and plans."
"No, I understand the value," Samantha replied carefully. But her eyes shifted slightly, hinting there was more she wasn't saying.
Michael could sense she wasn't being fully transparent. He pressed on, "Was there something about my presentation specifically that made you...distracted?"
Samantha weighed how much to reveal. A certain phrase Michael used seemed to unlock her honesty. "I...can't always pay attention," she admitted.
"Because it's boring?" Michael stated bluntly.
Samantha knew she was caught. After the doodling incident, she figured it couldn't get any worse. "Yes," she confessed. "The presentations can be...quite boring."
Samantha couldn't hold back any longer. The words came tumbling out. "Don't you find it ironic? You're always asking us for innovative, creative solutions. But then you plan it all out in spreadsheets using the same old, stale techniques that get called 'innovation best practices.'"
She gestured to her doodled notepad. "This...this is how I tap into my real creativity. My doodles help me think differently, make unexpected connections. But I have to do it in secret, like it's something to be ashamed of."
Michael furrowed his brow, considering her outburst. After a moment, he nodded slowly. "Okay, let's explore your approach then. If everyone just pursued what they found personally interesting, how would we ensure we actually deliver on what matters to our customers and stakeholders?"
Samantha opened her mouth to respond, but Michael kept going. "If you want to draw little creatures, that's fine. But that's what hobbies are for - creative outlets separate from work."
He leaned back in his chair. "I rebuild vintage motorcycles in my free time, for instance. It's my passion. But I don't mix that hobby with my professional responsibilities here. There's a line between interests and important work."
Samantha felt her cheeks flush with a mix of embarrassment and defiance. Michael's dismissive attitude toward her doodling ignited something within her. This wasn't just a hobby to be compartmentalized.
"My doodles ARE my work," she stated firmly. "They're how my mind explores problems and imagines new possibilities. Treating it as a separate 'hobby' is what stifles true innovation."
## The CEO of the brain
Michael could sense Samantha's defiance over treating her doodles as mere hobbies. He decided to take a different tack, tapping his knuckle on the polished conference table.
"You know, this table is made of solid oak. Took years of patient growth for that oak tree to develop its hard, sturdy interior." He ran his hand along the smooth wood.
Michael then pointed to his own forehead. "What do you think is behind this?" He raised an inquisitive eyebrow at Samantha.
Before she could respond, he continued, "The frontal cortex - the mastermind behind our most advanced brain functions. It's the control center that allows us to plan, reason, and make conscious choices rather than just going with our first impulsive urges."
He swiveled his chair to better engage Samantha. "Imagine it as the CEO of your brain - integrating information from all other regions to decide the best course of action. Without it, you'd just drift aimlessly based on whatever thought or stimuli captured your attention at the moment. The frontal cortex is what lets you concentrate on work instead of browsing YouTube."
Michael swiveled his chair toward the glass windows overlooking a playground outside. A group of children shrieked with laughter, chasing each other across the jungle gym.
"To a child, every moment is about following their interests. Playing, running around, doing whatever feels fun and stimulating in that instant." Michael mimed drawing in the air with an imaginary crayon.
"They live totally in the present, their frontal cortexes all soft and malleable. That's why kids love to doodle and draw - it's an impulsive creative outlet with no deeper purpose."
He turned to Samantha. "When was the last time you visited the dentist?"
Samantha was caught off-guard. "Uh...six months ago, I think?"
Michael nodded. "Exactly. We become adults. Our frontal cortexes mature, and we have to make hard decisions against our childish impulses."
"A child would never willingly go to the dentist, because it's not fun. But we adults understand the important responsibilities - like basic hygiene and preventative care. We delay the gratification of eating sweets, because we know the consequences if we don't."
Samantha couldn't help but smirk at the dentist analogy, though Michael's metaphor rang true.
"That's the crux of this dilemma. Your doodles may feel like creative indulgences. But I need my team to embrace the bigger picture - our professional obligations to this company and its customers. Even if that means... delaying gratification."
## Balancing acts
"But there are whole communities out there not based on these 'important' responsibilities you speak of," Samantha countered. "People who choose to live for their interests and passions, without being forced into pursuits they find dull or constricting."
She leaned forward, a hint of wistfulness in her voice. "Don't you think the world would be a happier place if we gave the 'interesting' things a bigger share of our lives? Instead of always having to delay gratification for what society deems important?"
Michael considered her point, nodding slowly. "You're not entirely wrong. With primitive hunter-gatherer tribes, that divide between interesting and important pursuits wasn't so starkly defined."
"But their lives were a constant struggle for survival," he added pragmatically. "The agricultural revolution, when humans transitioned to settled societies, was in many ways the maturation of our species."
Michael tented his fingers, gathering his thoughts. "It allowed us to delay gratification, plan long-term, and ultimately build civilization's greatest achievements. As glorious as a nomadic existence following your every whim may sound, it lacks the stability and focus to reach our full potential."
He fixed Samantha with a measured look. "The frontal cortex's ability to override impulsive urges in favor of responsibilities - as tedious as they can feel at times - is what separates us from plucky grasshoppers endlessly playing their violins while the industrious ants do the hard work of preparing for the future."
Samantha: But there are exceptions in our current society to this rigid separation of interests from responsibilities. What about people with ADHD or other neurological conditions? For them, it can be extremely difficult, maybe even impossible, to always prioritize what's deemed important over their personal interests and creative pursuits.
Michael: That's a fair point. I can see how brain chemistry differences would make delaying gratification and overriding impulsive urges towards interests more challenging.
Samantha: Exactly. And what about artists, journalists, entertainers? Their work is literally following and expressing their creative interests and passions. Yet they're often considered less serious or trustworthy for that.
Michael: Well, I would argue that for truly successful creatives at the highest levels, their interests have effectively become important professional and financial responsibilities.
Samantha: Sure, but that's only after they've "made it" and their interests become work obligations. Before that, while they're still struggling, society tends to dismiss their passions as frivolous indulgences distracting from more important practical concerns.
Michael: I can't deny there's a double standard there. We celebrate creative success after the fact, but are quick to criticize those same pursuits as impractical whimsies beforehand.
Samantha: It's an unfair, privileged way of looking at it. The financially stable can more easily embrace their interests over responsibilities without facing the same potential consequences as others.
Michael was silent for a moment, taking in Samantha's perspective. He nodded slowly, his expression softening. "You're right, I haven't fully considered the nuances." Michael leaned forward. "If we're going to truly question this dichotomy between responsibilities and creative interests, what would your suggestion be? How could we create more space for 'interesting' work and innovative pursuits, while still meeting our professional obligations?"
He spread his hands in a gesture of openness. "I may have been too dismissive earlier. But I'm listening now - what's your vision for finding a better balance?"
## Drawing attention
Samantha sat at her desk, watching at the meeting agenda. She had drawn a small grasshopper surrounded by dozens of ants in business suits, each holding a tiny briefcase. The office was noisy with the sound of keyboards, ringing phones, and people talking.
Michael’s door opened with a quiet creak. He stepped out, his eyes scanning the room until they landed on Samantha. He gave a brief nod, then went back into his office. Samantha felt a rush of nervous energy. She gathered her sketches and sketchbook, slipping them into a folder.
As she walked towards Michael’s office, the sounds of the office faded. Her footsteps seemed louder in her ears. She passed her colleagues, who were busy at their desks, not noticing her. The air felt heavier, filled with anticipation.
She stopped at Michael’s door, took a deep breath, and knocked lightly before pushing it open. Inside, the office was plain and practical, the fluorescent lights casting a harsh glare. Michael sat behind his desk, a fortress of paper and files, his expression serious.
Samantha stepped inside, the door clicking shut behind her. The room felt smaller, the walls closer. She approached the desk and placed her folder on it. Michael watched her with a calm, unreadable gaze, his hands folded neatly in front of him.
She opened the folder and spread out her sketches. The grasshopper, surrounded by ants in business suits, was a tiny act of rebellion against the boring meetings. Samantha straightened, meeting Michael’s eyes. The room was silent except for the distant hum of the office outside.
Michael picked up one of the sketches, examining it closely. His face remained impassive, but there was a flicker of something in his eyes—curiosity, perhaps, or a slight hint of amusement. Samantha stood still, her heart pounding, waiting for his reaction.
Michael set the sketch down and looked at her. For a moment, the distance between manager and employee, the line between duty and creativity, seemed to blur. Samantha felt the weight of the moment, the fragile possibility of change hanging in the air.
He leaned back in his chair, tapping a finger on the desk. Samantha held her breath, ready for whatever came next. Samantha snapped her fingers. Somewhere, a projector clicked on, and the image of the grasshopper and the ants appeared on the wall behind Michael, magnified ten times. One of the ants' briefcases landed right over Michael's face, who turned in his swivel chair and watched the presentation on the wall.
## Beyond boredom: a presentation
#### 1. Introduction
- **Purpose**: Integrate interestingness of tasks into the Agile process to enhance engagement and motivation.
- **Key Roles**:
- **Product Manager**: Defines the importance and business value of tasks.
- **Interestingness Owner**: Explains why tasks are interesting and ensures tasks are engaging.
- **Team Members**: Vote on the interestingness of tasks.
#### 2. Roles and Responsibilities
- **Product Manager (PM)**:
- Prioritize tasks based on business needs and deadlines.
- Communicate the importance and customer/business value of each task.
- **Interestingness Owner (IO)**:
- Assess tasks for their interestingness and potential for creative problem-solving.
- Present tasks in a way that highlights their interesting aspects.
- Modify tasks to increase their interestingness if they are initially deemed dull.
- **Team Members**:
- Vote on the interestingness of tasks during planning sessions.
- Provide feedback on what aspects make a task interesting or dull.
#### 3. Task Evaluation Process
- **Task Identification**:
- Tasks are initially identified and listed by the Product Manager.
- Each task includes a description, priority, estimated effort, and deadline.
- **Interestingness Assessment**:
- The Interestingness Owner reviews each task to identify and highlight interesting aspects.
- Tasks are presented to the team with both business value (by PM) and interestingness (by IO).
#### 4. Voting on Interestingness
- **Voting Mechanism**:
- During sprint planning or task review sessions, team members vote on the interestingness of each task.
- Voting scale: Interesting (Yes) or Dull (No).
- **Marking Tasks**:
- A task is marked as interesting if at least one team member votes 'Yes'.
- Tasks with unanimous 'No' votes are flagged for further review.
#### 5. Managing Dull Tasks
- **Review by Interestingness Owner**:
- Tasks marked as dull by all team members are reviewed by the Interestingness Owner.
- The IO attempts to identify ways to make these tasks more engaging.
- **Modification or Removal**:
- If the IO can enhance the interestingness, the task is modified and re-presented to the team.
- If the task remains dull but is still important, it may be revisited in subsequent sessions.
- Tasks that cannot be made interesting and are not crucial may be removed from the list.
## Maybe
When Samantha finished her presentation, the room became very quiet. The light from the projector made strange shapes on the walls, and everyone looked serious. Michael was at the front, looking like he was thinking very hard.
Samantha felt both excited and scared. She really wanted Michael to like her idea, but she wasn't sure if he did. She looked around the room, and all her colleagues were there, even though she had started talking just to Michael. It made her feel nervous, like all eyes were on her.
After Samantha concluded her presentation, the room fell silent. The projector's light danced across the walls, adding to the tension in the air. Michael sat at the head of the table with an unreadable expression.
Samantha's heart was beating fast as she waited for Michael's response. She had put a lot of effort into this proposal, hoping to change their approach to work. But now, she was uncertain if her ideas would be accepted or rejected.
Michael leaned forward and looked at the gathered team. "Thank you, Samantha, for sharing your ideas," he began, speaking in a calm tone. "Your perspective is certainly thought-provoking."
Everyone in the room waited with anticipation for Michael's decision. Samantha held her breath, hoping for a positive outcome.
"But," Michael continued cautiously, "as with any new idea, there are risks and uncertainties to consider."
Samantha felt a little disappointed, but she did not want to give up on her vision. She knew from the start that change would not be easy, but she was ready to fight for her ideas.
"As a team," Michael went on, "we need to carefully weigh the potential benefits against the potential drawbacks of integrating new ideas into our work process."
Samantha nodded slowly, thinking about questions and doubts. Had she failed to explain her case clearly enough? Were her ideas too different from their current practices?
But despite the uncertainty, Samantha felt determined. She may not have convinced them today, but she refused to give up on her vision. She would continue to promote creativity and innovation, even if others doubted or were skeptical.
As the meeting ended and her colleagues left, Samantha stayed for a moment and exchanged a meaningful look with Michael. In that brief moment, she saw a hint of curiosity in his eyes, a silent acknowledgment that her ideas might have some value.
As Samantha gathered her notes and sketches, she couldn't shake the feeling that this was only the beginning of something truly remarkable. | offcode |
1,865,538 | Advanced Java: Simplifying Object Property Copy and Manipulation with BeanUtil | In Java programming, the BeanUtil utility class is a powerful and convenient tool for simplifying the... | 0 | 2024-05-26T11:06:48 | https://dev.to/markyu/advanced-java-simplifying-object-property-copy-and-manipulation-with-beanutil-3l2n | java, javabeans, springframework, objectmapping | In Java programming, the `BeanUtil` utility class is a powerful and convenient tool for simplifying the process of copying properties and manipulating objects. This article will introduce the basic functionalities of `BeanUtil`, demonstrate its application through detailed code examples, and compare it with other similar tools. Additionally, we will explore the advantages and usage scenarios of `BeanUtil` in real-world development to help developers better understand and utilize this utility class.
## Introduction to the BeanUtil Utility Class
### 1. Overview of BeanUtil
`BeanUtil` is a widely used Java utility class that provides a series of methods to simplify property copying and manipulation between JavaBean objects. It primarily addresses complex object operations and property handling issues, significantly improving code readability and maintainability.
#### Shallow Copy vs. Deep Copy:
- **Shallow Copy:** `BeanUtil` performs shallow copying, meaning it copies values for primitive data types and references for object types. This means that while the values of primitive types are directly copied, the references to objects are copied instead of the objects themselves. As a result, changes to these objects in one instance will affect the other.
- **Deep Copy:** In contrast, deep copying involves creating new objects for referenced types and copying their content. This ensures that the objects in the new instance are entirely independent of those in the original instance.
### 2. Core Features of BeanUtil
The core functionalities of `BeanUtil` include:
| Feature | Description |
| ---------------- | -------------------------------------------------------- |
| `copyProperties` | Copies property values from one object to another |
| `setProperty` | Sets the value of a specified property of an object |
| `getProperty` | Gets the value of a specified property of an object |
| `cloneBean` | Clones an object, creating a duplicate |
| `populate` | Populates an object's properties using data from a `Map` |
| `describe` | Converts an object's properties and values into a `Map` |
These features make `BeanUtil` incredibly versatile, enabling developers to handle complex property manipulations with minimal code.
### 3. Comparison with Similar Libraries
In addition to `BeanUtil`, there are several other tools and libraries available for object property copying and manipulation:
- **Apache Commons BeanUtils:** Provides utility methods for JavaBean operations, including property copying and setting. It's an open-source library widely used in Java projects.
- **Spring BeanUtils:** A utility class from the Spring Framework that offers simple property copying and manipulation methods, commonly used within the Spring ecosystem.
- **Dozer:** A Java Bean mapper that supports deep copying and complex mapping configurations. It allows for custom mapping configurations, suitable for complex object conversions.
- **ModelMapper:** An intelligent object mapping framework designed to simplify the mapping between objects. It offers powerful mapping capabilities and handles complex object relationships and type conversions.
- **MapStruct:** A compile-time code generator that automatically generates type-safe, high-performance Bean mapping code. It uses annotation-driven mapping definitions, reducing runtime overhead.
- **Orika:** A Java Bean mapper focused on providing fast and simple object mapping capabilities. It supports complex mapping configurations and multiple mapping strategies, making it ideal for high-performance mapping needs.
#### Comparison Table:
| Tool Class | Property Copy | Property Set/Get | Type Conversion | Performance | Configuration Complexity |
| ---------------- | ------------- | ---------------- | --------------- | ----------- | ------------------------ |
| BeanUtil | Yes | Yes | Yes | Medium | Low |
| Apache BeanUtils | Yes | Yes | Yes | Low | Low |
| Spring BeanUtils | Yes | Yes | No | High | Low |
| Dozer | Yes | No | Yes | Low | Medium |
| ModelMapper | Yes | No | Yes | Medium | Medium |
| MapStruct | Yes | No | Yes | High | High |
| Orika | Yes | No | Yes | Medium | Medium |
These tools each have their unique features, and developers can choose the most suitable one based on project requirements. For instance, `Apache Commons BeanUtils` and `Spring BeanUtils` are ideal for simple property copying, while `Dozer` and `ModelMapper` are better suited for complex object mapping needs. `MapStruct` and `Orika` excel in performance and type safety.
## Using BeanUtil: Code Examples
### 1. Property Copying
Property copying is one of the most common functions of `BeanUtil`, allowing you to copy all property values from one object to another.
#### Example Code:
```java
import org.apache.commons.beanutils.BeanUtils;
public class BeanUtilExample {
public static void main(String[] args) {
try {
SourceObject source = new SourceObject("John", 30);
TargetObject target = new TargetObject();
BeanUtils.copyProperties(target, source);
System.out.println("Target Object: " + target);
} catch (Exception e) {
e.printStackTrace();
}
}
}
class SourceObject {
private String name;
private int age;
public SourceObject(String name, int age) {
this.name = name;
this.age = age;
}
// getters and setters
}
class TargetObject {
private String name;
private int age;
@Override
public String toString() {
return "TargetObject [name=" + name + ", age=" + age + "]";
}
// getters and setters
}
```
In this example, the `copyProperties` method copies the property values from the `source` object to the `target` object.
### 2. Setting and Getting Properties
`BeanUtil` also provides methods for dynamically setting and getting object properties.
#### Example Code:
```java
import org.apache.commons.beanutils.BeanUtils;
public class PropertyExample {
public static void main(String[] args) {
try {
MyBean myBean = new MyBean();
BeanUtils.setProperty(myBean, "name", "Alice");
BeanUtils.setProperty(myBean, "age", 25);
String name = BeanUtils.getProperty(myBean, "name");
String age = BeanUtils.getProperty(myBean, "age");
System.out.println("Name: " + name);
System.out.println("Age: " + age);
} catch (Exception e) {
e.printStackTrace();
}
}
}
class MyBean {
private String name;
private int age;
// getters and setters
}
```
In this example, `setProperty` is used to set the `name` and `age` properties of `myBean`, and `getProperty` is used to retrieve these values.
### 3. Object Cloning
`BeanUtil` can also clone objects, creating duplicates.
#### Example Code:
```java
import org.apache.commons.beanutils.BeanUtils;
public class CloneExample {
public static void main(String[] args) {
try {
MyBean original = new MyBean("Bob", 40);
MyBean clone = (MyBean) BeanUtils.cloneBean(original);
System.out.println("Original: " + original);
System.out.println("Clone: " + clone);
} catch (Exception e) {
e.printStackTrace();
}
}
}
class MyBean {
private String name;
private int age;
public MyBean() {}
public MyBean(String name, int age) {
this.name = name;
this.age = age;
}
@Override
public String toString() {
return "MyBean [name=" + name + ", age=" + age + "]";
}
// getters and setters
}
```
In this example, the `cloneBean` method creates a copy of the `original` object.
## Conclusion
The `BeanUtil` utility class provides Java developers with a straightforward method for manipulating JavaBean object properties. By using `BeanUtil`, developers can reduce repetitive code, increase development efficiency, and enhance code readability and maintainability. Although there are many similar tools and libraries, `BeanUtil` remains a popular choice in many projects due to its simplicity and powerful functionality. Choosing the right tool should depend on the specific needs and complexity of the project. For simple property copying and operations, `BeanUtil` is an excellent choice, while more complex mapping needs may require other powerful mapping tools. This article, with detailed introductions and example code, aims to help developers better understand and utilize the `BeanUtil` utility class to improve development efficiency and code quality.
## References
- [Apache Commons BeanUtils Documentation](https://commons.apache.org/proper/commons-beanutils/)
- [Spring Framework BeanUtils Documentation](https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/beans/BeanUtils.html)
- [Dozer Documentation](http://dozer.sourceforge.net/documentation/index.html)
- [ModelMapper Documentation](http://modelmapper.org/)
- [MapStruct Documentation](https://mapstruct.org/documentation/stable/reference/html/)
- [Orika Documentation](https://orika-mapper.github.io/orika-docs/) | markyu |
1,865,537 | Connecting with the Divine: Discover Spiritual Mediums Near Me | Are you curious about spiritual mediums and their abilities? Explore our keyword search to find... | 0 | 2024-05-26T10:58:56 | https://dev.to/mr_nags_0df5a4fe81b8d67a/connecting-with-the-divine-discover-spiritual-mediums-near-me-9dm | Are you curious about [spiritual mediums](https://www.haqbahu.com/articles/spritual-miediums-near-me/) and their abilities? Explore our keyword search to find trustworthy and experienced spiritual mediums near you. These professionals can help you connect with departed loved ones, gain insights into your life's purpose, and navigate spiritual challenges. Discover the profound guidance and healing that spiritual mediums offer, right in your local area. Whether you're seeking clarity, closure, or spiritual growth, connecting with a reputable medium can be a transformative experience. Start your journey today by exploring the spiritual mediums near you and unlocking deeper connections with the divine. | mr_nags_0df5a4fe81b8d67a | |
1,865,536 | Different Ways to Include External JavaScript in HTML | JavaScript is an essential part of web development, allowing developers to add interactivity and... | 0 | 2024-05-26T10:56:52 | https://dev.to/imabhinavdev/different-ways-to-include-external-javascript-in-html-34ab | javascript, webdev, beginners, programming | JavaScript is an essential part of web development, allowing developers to add interactivity and dynamic behavior to web pages. When incorporating external JavaScript files into HTML documents, there are various methods to consider, each with its own pros and cons. In this blog, we'll explore different ways to include external JavaScript in HTML, discuss their advantages and disadvantages, and provide guidance on when to use each method.
## Introduction
JavaScript files can be included in HTML documents using various methods, each affecting page loading and script execution differently. Let's delve into these methods and understand their implications.
## Including External JavaScript in the `<head>`
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="script.js"></script>
</head>
<body>
<!-- Your HTML content here -->
</body>
</html>
```
**Pros:**
- Ensures scripts are loaded before rendering the page, preventing any JavaScript-dependent errors.
- Guarantees that scripts are available for use as soon as the page starts loading.
**Cons:**
- Can delay the rendering of the page if the script file is large or takes time to load.
- May result in a slower initial page load time.
**When to Use:**
- When JavaScript needs to manipulate the DOM or perform tasks that should occur before the page renders.
**When Not to Use:**
- Avoid if the script file is large or not essential for initial page functionality.
## Before the Closing `</body>` Tag
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<!-- Your HTML content here -->
<script src="script.js"></script>
</body>
</html>
```
**Pros:**
- Allows the HTML content to load before fetching and executing the script, potentially improving perceived page load speed.
- Scripts won't block other resources from loading.
**Cons:**
- JavaScript execution may be delayed until after the HTML content is rendered, affecting user experience if scripts are essential for initial functionality.
**When to Use:**
- Suitable for scripts that are not critical for initial page functionality or rendering.
**When Not to Use:**
- Avoid for scripts that need to manipulate the DOM or execute before the page renders.
## Using `defer`
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="script.js" defer></script>
</head>
<body>
<!-- Your HTML content here -->
</body>
</html>
```
**Pros:**
- Executes scripts after the HTML content is parsed, but before `DOMContentLoaded`, ensuring that scripts run in the order they are declared.
- Improves page load time by allowing HTML parsing to continue while the script is downloaded.
**Cons:**
- May still delay script execution if multiple scripts are deferred, as they will execute sequentially.
**When to Use:**
- Ideal for scripts that need to access DOM elements but can safely run after the HTML is parsed.
**When Not to Use:**
- Avoid for scripts that must execute before `DOMContentLoaded` or rely on the immediate availability of DOM elements.
## Using `async`
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="script.js" async></script>
</head>
<body>
<!-- Your HTML content here -->
</body>
</html>
```
**Pros:**
- Fetches and executes the script asynchronously, allowing HTML parsing to continue without waiting for the script to download.
- Ideal for non-blocking scripts that don't rely on DOM elements or need to execute independently.
**Cons:**
- Scripts may execute out of order, potentially causing dependencies or race conditions.
- Not suitable for scripts that require access to the DOM or must execute in a specific order.
**When to Use:**
- Best for non-essential scripts that can run independently and don't depend on the page's DOM structure.
**When Not to Use:**
- Avoid for scripts that require DOM manipulation or must execute before other scripts for proper functionality.
## Comparison of Methods
| Method | Pros | Cons |
|-----------------------------|------------------------------------------|------------------------------------------------------|
| `<script>` in `<head>` | - Ensures scripts are available early. | - May delay initial page load. |
| | - Prevents JavaScript-dependent errors. | - May block rendering if script is large. |
| Before `</body>` | - Allows HTML content to load first. | - Delayed script execution. |
| | - Doesn't block other resource loading. | - Scripts may not run before DOMContentLoaded. |
| `defer` | - Scripts execute after HTML parsing. | - Scripts may still block rendering. |
| | - Improves perceived page load speed. | - Multiple deferred scripts may execute sequentially.|
| `async` | - Fetches and executes script asynchronously. | - Scripts may execute out of order. |
| | - Doesn't block HTML parsing. | - Not suitable for scripts with dependencies. |
## When to Use Each Method
- **`<script>` in `<head>`:** Use when scripts are essential for initial page functionality and must be available before rendering.
- **Before `</body>`:** Suitable for non-essential scripts or scripts that don't rely on immediate DOM access.
- **`defer`:** Best for scripts that require access to the DOM but can safely execute after HTML parsing.
- **`async`:** Ideal for non-blocking scripts that can execute independently and don't rely on the page's DOM structure.
## When Not to Use Each Method
- **`<script>` in `<head>`:** Avoid for large scripts or scripts that aren't essential for initial functionality.
- **Before `</body>`:** Not suitable for scripts that need to manipulate the DOM or execute before DOMContentLoaded.
- **`defer`:** Avoid for scripts that must execute before DOMContentLoaded or rely on immediate DOM access.
- **`async`:** Not suitablefor scripts that require access to the DOM or must execute in a specific order.
## Performance Impact
The performance impact of each method depends on factors such as script size, placement, and dependencies. Here's a brief overview:
- **`<script>` in `<head>`:** May delay initial page load if scripts are large or take time to download. However, ensures scripts are available early, potentially reducing script execution delays later.
- **Before `</body>`:** Allows HTML content to load first, improving perceived page load speed. However, scripts may execute after the DOM is fully rendered, delaying script execution.
- **`defer`:** Fetches scripts asynchronously while allowing HTML parsing to continue. Scripts execute after HTML parsing but before `DOMContentLoaded`, improving perceived page load speed.
- **`async`:** Fetches and executes scripts asynchronously, allowing HTML parsing to continue without waiting for the script to download. However, scripts may execute out of order, potentially causing dependencies or race conditions.
## Conclusion
In conclusion, the method you choose to include external JavaScript in HTML depends on various factors, including script dependencies, page load speed, and script execution timing. Each method has its pros and cons, and understanding these factors is crucial for optimizing web page performance and user experience.
- **`<script>` in `<head>`:** Use when scripts are critical for initial page functionality and must be available before rendering.
- **Before `</body>`:** Suitable for non-essential scripts or scripts that don't rely on immediate DOM access.
- **`defer`:** Best for scripts that require access to the DOM but can safely execute after HTML parsing.
- **`async`:** Ideal for non-blocking scripts that can execute independently and don't rely on the page's DOM structure.
By carefully considering these factors and choosing the appropriate method for including external JavaScript, you can optimize your web pages for better performance and user experience. | imabhinavdev |
1,865,535 | IPFS (InterPlanetary File System) Explained | 1. What is IPFS? Imagine you have a giant library where everyone can share their books. IPFS is like... | 0 | 2024-05-26T10:55:41 | https://dev.to/kamilrashidev/ipfs-interplanetary-file-system-explained-2kn1 | ipfs, beginners, programming | **1. What is IPFS?**
Imagine you have a giant library where everyone can share their books. IPFS is like a giant library for the internet. It helps people store and share files (like books, videos, pictures) all over the world.
**2. How is it different from the current internet?**
Current Internet (HTTP): When you want to see a webpage or watch a video, your computer asks a specific server (a big computer) for the file. This is like asking one specific library for a book.
IPFS: Instead of asking one place for the file, you ask everyone who has it. It’s like asking all your friends if they have the book you want. If they do, they share it with you.
**3. How does IPFS find files?**
Unique Address: Every file in IPFS gets a unique address called a hash (a string of letters and numbers). It’s like a special code that represents that file.
Content-Based: In IPFS, you find files based on their content, not where they are stored. If you have the hash code, you can find the file no matter who has it.
**4. How do you add files to IPFS?**
Put the File in IPFS: You add your file (like a picture or a video) to IPFS. It gets broken into smaller pieces, and each piece gets a hash code.
Get a Hash Code: IPFS gives you a hash code for your file.
This hash code is like the file’s unique address.
Share the Hash Code: If you want to share your file with friends, you give them the hash code. They can use this code to get the file from IPFS.
**5. How do you get files from IPFS?**
Ask for the File: You use the hash code to ask IPFS for the file.
Find the File: IPFS finds people (nodes) who have the file and asks them for the pieces.
Download the File: Your computer collects all the pieces and puts them back together to give you the file.
**6. Why is IPFS cool?**
Decentralized: No single server can control or censor the files. It’s like everyone sharing their books with each other.
Faster: Files can come from many sources at once, so downloads can be faster, especially if lots of people have the file.
Permanent: Files can stay available as long as someone is sharing them. Even if the original uploader goes away, others can still have the file.
**7. How do you use IPFS?**
IPFS Software: You need to install IPFS software on your computer. This software helps you add and get files from IPFS.
IPFS Network: Your computer becomes part of the IPFS network, sharing and receiving files with other computers.
**8. A Simple Example**
Adding a File: You have a picture of your cat. You add it to IPFS, and it gets a hash code like `QmXyZ....`
Sharing the File: You give your friend the hash code `QmXyZ....` They use this code to get the picture from IPFS.
Getting the File: Your friend’s computer asks the IPFS network for the file with the hash code `QmXyZ....` The network finds the file and sends it to your friend.
**9. Key Terms**
Node: A computer connected to the IPFS network.
Hash Code: A unique address for a file in IPFS.
Decentralized: Not controlled by one single place; shared among many.
**10. Summary**
IPFS is like a big library for the internet.
Files are found by their content, not location.
You can add, share, and get files using unique hash codes.
It’s faster, more reliable, and more free than the current internet. | kamilrashidev |
1,865,531 | Best Web Development Resources 🔥 | Here are some valuable resources for web developers! ✅ 📌Docs 📓... | 0 | 2024-05-26T10:51:52 | https://dev.to/alisamirali/best-web-development-resources-2hbl | webdev, frontend, backend, fullstack | Here are some valuable resources for web developers! ✅
---
## 📌Docs
📓 http://developer.mozilla.org
📓 http://w3schools.com
📓 http://w3docs.com
📓 http://devdocs.io
📓 http://web.dev
---
## 📌Learning Platforms
🎓 http://freecodecamp.org
🎓 http://codecademy.com
🎓 http://javascript30.com
🎓 http://frontendmentor.io
🎓 http://testautomationu.applitools.com
🎓 http://coursera.org
🎓 http://khanacademy.org
🎓 http://sololearn.com
🎓 https://javascript.info
🎓 https://www.udemy.com
---
## 📌Coding Challenge Platforms
⌨️ http://codewars.com
⌨️ http://topcoder.com
⌨️ http://codingame.com
⌨️ http://hackerrank.com
⌨️ http://projecteuler.net
⌨️ http://coderbyte.com
⌨️ http://codechef.com
⌨️ http://exercism.io
⌨️ http://leetcode.com
⌨️ http://spoj.com
---
## 📌Freelancing Platforms
💰 http://toptal.com
💰 http://upwork.com
💰 http://freelancer.com
💰 http://peopleperhour.com
💰 http://simplyhired.com
💰 http://envato.com
💰 http://guru.com
💰 http://fiverr.com
💰 http://hireable.com
💰 http://6nomads.com
---
## 📌Free Hosting
⚡️ http://netlify.com
⚡️ http://firebase.google.com
⚡️ http://aws.amazon.com
⚡️ http://heroku.com
⚡️ https://pages.github.com
⚡️ http://vercel.com
⚡️ http://surge.sh
⚡️ http://render.com
⚡️ https://docs.gitlab.com/ee/user/project/pages
---
## 📌Free CC-0 Photo Stocks
📷 http://unsplash.com
📷 http://pixabay.com
📷 http://pexels.com
📷 http://morguefile.com
📷 http://freephotosbank.com
📷 http://stockvault.net
📷 http://freeimages.com
📷 http://search.creativecommons.org
---
## 📌Illustrations
🌠 http://undraw.co/illustrations
🌠 http://drawkit.io
🌠 http://icons8.com/ouch
🌠 http://iradesign.io
🌠 http://interfacer.xyz
🌠 http://blush.design
---
## 📌Icons
🍩 http://fontawesome.com
🍩 http://flaticon.com
🍩 http://icons8.com
🍩 http://material.io/resources/icons
🍩 http://iconmonstr.com
🍩 https://heroicons.dev
🍩 https://www.abstractapi.com/user-avatar-api
---
## 📌Fonts
✒️ http://fonts.google.com
✒️ http://fontspace.com
✒️ http://1001fonts.com
✒️ http://fontsquirrel.com
---
## 📌Color Palettes
🎨 http://coolors.co
🎨 http://colorhunt.co
🎨 http://paletton.com
🎨 http://color-hex.com
🎨 http://mycolor.space
---
## 📌UI Inspiration
🤔 http://uimovement.com
🤔 http://uigarage.net
🤔 http://collectui.com
🤔 https://dribbble.com
🤔 https://ui-patterns.com
---
## 📌Website Optimization Tools
⚡ https://pagespeed.web.dev
⚡ https://gtmetrix.com
⚡ https://www.webpagetest.org
⚡ https://yslow.org
⚡ https://crux.run
---
**_Happy Coding!_** 🔥
**[LinkedIn](https://www.linkedin.com/in/dev-alisamir)**
**[X (Twitter)](https://twitter.com/dev_alisamir)**
**[Telegram](https://t.me/the_developer_guide)**
**[YouTube](https://www.youtube.com/@DevGuideAcademy)**
**[Discord](https://discord.gg/s37uutmxT2)**
**[Facebook](https://www.facebook.com/alisamir.dev)**
**[Instagram](https://www.instagram.com/alisamir.dev)** | alisamirali |
1,865,497 | Making Your GitHub Readme Profile Stand Out | In this article, I like to share with you how to make your GitHub Readme profile pop and stand out... | 0 | 2024-05-26T10:50:58 | https://dev.to/raielly/making-your-github-readme-profile-stand-out-4m52 | github, profile, beginners, tutorial | In this article, I like to share with you how to make your [GitHub](https://github.com/raielly) Readme profile pop and stand out from the others.
Old 🙂
New 🤩
So, basically, you just make a new repository with the same name as your GitHub username. Like, if your username is 'raielly', you'd create a repo called 'raielly'.
Then, you use the README file to make changes to your page. There you can use [Markdown](https://github.github.com/gfm/) and HTML to add your personal touch and make your profile stand out. show off whatever you want people to know about you, list your favorite languages and tech.
For some ideas, take a peek at this site:
[https://zzetao.github.io/awesome-github-profile/](https://zzetao.github.io/awesome-github-profile)
Cool images for your skills and social links, grab them from here:
[https://github.com/alexandresanlim/Badges4-README.md-Profile](https://github.com/alexandresanlim/Badges4-README.md-Profile)
Once you're all set, don't forget to git commit your changes.
That's it! EzPz!
Now that you've seen how easy it is to redesign your GitHub page, What does your GitHub profile readme file look like? Share your GitHub Profile below 😊😎🔥 | raielly |
1,865,530 | The best in cyber security recovery experts, Linux Cyber Security has recovered a lot of cryptocurrencies. | Have you lost your cryptocurrency, important files, or valuable data? Don't panic – we can help! Our... | 0 | 2024-05-26T10:47:07 | https://dev.to/larry_awilliams_c1f2bd25/the-best-in-cyber-security-recovery-experts-linux-cyber-security-has-recovered-a-lot-of-cryptocurrencies-34ci | Have you lost your cryptocurrency, important files, or valuable data? Don't panic – we can help! Our team of recovery experts specializes in swiftly and securely retrieving lost or inaccessible digital assets. Whether it's a misplaced wallet, corrupted files, or encrypted data, you can trust our experienced team to recover what matters most to you. Contact us today for peace of mind and expert recovery solutions you can rely on. People don’t believe in cryptocurrencies anymore just most public find it difficult to operate their accounts leading to the loss of private keys or wallet transactions, some send out to fake cryptocurrency investment accounts once you pay with cryptocurrency, you can only get your money back when wallet address you send to is still with you, nevertheless, you should contact the company you used to send the money and tell them it was a fraudulent transaction. Ask them to reverse the transaction, if possible. You can also report fraud and other suspicious activity involving cryptocurrency to the following entities:
If Scam Transactions Are Hurting Your Credit Score LCS is the hacker you need. Visit the Reliable Company Website :[ www.linuxcybersecurity.com ]
for compliance contact:[ info@linuxcybersecurity.com ] You can reach out for free consultation.
| larry_awilliams_c1f2bd25 | |
1,764,775 | ALL Imp Hooks of React - A RECAP | In the realm of React development, mastering hooks is akin to unlocking a treasure trove of... | 0 | 2024-05-26T10:44:58 | https://dev.to/aadarsh-nagrath/all-hooks-of-react-a-recap-e4d | webdev, javascript, react, programming | In the realm of React development, mastering hooks is akin to unlocking a treasure trove of efficiency and flexibility. These small, but powerful functions revolutionized how developers manage state, side effects, and more in React components. In this blog post, we'll explore some of the most important React hooks that every developer should be familiar with.
This article explores -
useState, useEffect, useContext, useRef, useMemo, useCallback, useReducer
## The useState Hook
The useState hook allows you to add a state to a functional component. It takes an initial value as an argument and returns an array with two elements: the current state value and a function to update it.
Here’s an example of how to use useState to add a counter to a functional component:
```
import React, { useState } from 'react';
function Counter() {
const [count, setCount] = useState(0);
const increment= () => {
setCount(count + 1);
}
const decrement = () => {
setCount(count - 1);
}
return (
<div>
<p>Count: {count}</p>
<button onClick={increment}>Increment</button>
<button onClick={decrement}>decrement</button>
</div>
);
}
```
In this example, we start with a count of 0 and update it every time the “Increment” and ‘’decrement’’ button is clicked. This is the most basic example of all.
## The useEffect Hook
useEffect() is a React hook for performing side effects in functional components. It takes a function to run the effect and an optional array of dependencies.
The effect executes after the component renders and can return a cleanup function. If dependencies change, the effect re-runs, providing control over when it executes. Common Use Cases -
1. Data Fetching
2. Subscriptions
3. DOM Manipulation
4. State Updates
5. Cleanup
`useEffect(()=>{// function logic}, [dependencies])`
Now if no dependency is used, and it's kept empty then the useEffect will be in effect whenever the component renders. It will effect all time. For example -
Here no matter which button is pressed the function inside useEffect executes, when button pressed component renders and the function runs.
Now when dependency added - count2,
The logic of useEffect will take effect whenever there is a change in the count2 state. So only when button 2 is clicked it executes.
Now if an empty array is added as a dependency - []
In this case, the logic of useEffect executes only once when the component renders, and when it does states are in their default value, which is 3 in the case of count1 and 0 for count2, hence logic executes once only. Keep clicking the buttons will not have any effect.
## The useContext() Hook
This hook allows you to work with react context API, which is a mechanism that allows you to share or scope values to the entire component tree without passing props. Let me tell you this better with an example, let's imagine we have an object's emotions.
```
const emotions = {
happy: '😂',
angry: '😡',
sad: '😔'
}
```
To share the emotions across multiple disconnected components we can use - Context
```
const EmotionContext = createContext();
```
Now,
have this as the App.jsx -
and this as a context.jsx -
**Here's what's happening in context of the useContext hook:**
- **Context Creation:** In context.jsx, a context is created using the createContext() function from React. This creates a context object which consists of a Provider and a Consumer.
- **Provider Usage:** In the Contexting component, the EmotionContext.Provider is used to provide the emotions value to its descendants. The value prop of the provider sets the value of the context, which in this case is the emotions object.
- **Consumer Usage (Implicit):** The descendants of the EmotionContext.Provider can consume the context value using the useContext hook or by wrapping their components with the EmotionContext.Consumer. However, in your provided code, the context value isn't directly consumed within the Contexting component.
- **Usage in Descendants:** Components nested within Contexting component tree can utilize the context value using the useContext hook. They can import the EmotionContext object and call useContext(EmotionContext) to access the context value.
Other Example -
## The useRef() Hook
This hook allows you to create objects that will keep the same reference between renders. It can be used when you have a value that changes like setState but the difference is that it does not re-render when the value changes.
For example if we have a simple counter function -
```
function App() {
const count = useRef(0);
return (
<button onClick={() => count.current++}>
{count.current}
</button>
);
}
```
We can reference the current count, by `count.current`, but when clicking on the button it does change the count in ui because useRef() doesn't trigger re-render as setState does.
But a common use case for ref is to grab native HTML elements from jsx (JavaScript XML) or DOM. So ref does not re-update the component. It returns object {current: 0}, whose value is 0 by default.
```
const x = useRef(0)
useEffect(()=> {
x.current = x.current + 1;
})
{x.current} //somewhere
```
So x is just an object with current property, and when we update that property, that is what gets persisted between our different renders. We can change this x.current as many times as we want with re-rendering. Now an example of referencing the element of a document using useRef -
```
import React, {useRef} from 'react';
export function App(props) {
const inputRef = useRef(null);
const handle = () => {
alert(inputRef.current.value);
}
return (
<div className='App'>
<input type="text" ref = {inputRef} />
<br/>
<button onClick={handle}>Click Me</button>
</div>
);
}
```
Hereafter the button click -> handle function -> inputRef which is created and used in the input element is used. All elements have ref as an attribute.
Another example -
useRef is used to create a reference to the section element. When the button is clicked, the handleClick function is called, which scrolls the page to the section using sectionRef.current.scrollIntoView({ behavior: 'smooth' }).
```
import React, { useRef } from 'react';
function App() {
const sectionRef = useRef(null);
const handleClick = () => {
sectionRef.current.scrollIntoView({ behavior: 'smooth' });
};
return (
<div>
<button onClick={handleClick}>Scroll to Section</button>
<section ref={sectionRef}>
{/* Content */}
</section>
</div>
);
}
```
## useMemo() -
In React, the useMemo hook is used to memoize the result of a computation, so that the computation is only executed when its dependencies change.
This can be useful in optimizing the performance of expensive
calculations or computations in functional components.
• () => ...: This is an inline function that contains the computation or calculation you want to memoize.
• dependencyl, dependency2, ...: An array of dependencies. If any of these dependencies change, the memoized value will be recalculated.
In this example, we use useMemo to calculate the squared value of the count state. The useMemo hook will execute the inline function only when the count changes.
If the count remains the same, it will reuse the previously memoized value, thus avoiding unnecessary recalculations.
When you click the "Increment Count" button, the count will increase, and the squared count will be recalculated since the count has changed.
if you click the button multiple times without changing the count, the squared count will not be recalculated, and you won't see the console log message more than once.
Remember, useMemo is primarily used to optimize expensive computations, and using it unnecessarily can add unnecessary complexity to your code.
## The useCallback() Hook
`useCallback()` is a React Hook used for optimizing performance by memoizing functions. In React, whenever a component re-renders, functions defined within that component are recreated. This can be inefficient, especially when these functions are passed down to child components as props, as it can lead to unnecessary re-renders in those child components.
`useCallback()` allows you to memoize a function so that it's only re-created if one of its dependencies changes. This can prevent unnecessary re-renders of child components that rely on these functions.
```
const memoizedCallback = useCallback(
() => {
// function body
},
[dependencies]
);
```
const memoizedFn = useCallback(callback,depend);
callback is the function you want to memoized, and depend is dependencies based on which callback function is re-created, when any change occurs to them.
without using useCallback, the increment function would be
recreated on every render of the ParentComponent, leading to potential performance issues.
However, by using useCallback, the memoized Increment function is only recreated when the count state changes, which optimizes performance by preventing unnecessary re-renders of the ChildComponent.
Remember that while `useCallback`can help improve performance in certain situations, it's important to avoid overusing it.
Only apply it to functions that actually cause performance issues due to frequent re-creation. In most cases, React's built-in reconciliation process handles function re-creation efficiently.
## The useReducer() Hook
The useReducer hook allows you to manage complex state in a functional component. It’s similar to the useState hook, but instead of a simple value, it takes a reducer function and an initial state.Think of it as a more powerful alternative to useState for complex state logic.
1. State and Actions: useReducer uses a state and actions to change that state.
2. Reducer Function: You create a function (reducer) that takes the current state and an action, and returns the new state.
3. Initial State: You define the starting state.
4. Dispatch: You get a function to send actions to the reducer to update the state.
Example -
```
import React, { useReducer } from 'react';
// Define the reducer function
function reducer(state, action) {
switch (action.type) {
case 'increment':
return { count: state.count + 1 };
case 'decrement':
return { count: state.count - 1 };
default:
throw new Error();
}
}
function Counter() {
const [state, dispatch] = useReducer(reducer, { count: 0 });
return (
<div>
<p>Count: {state.count}</p>
<button onClick={() => dispatch({ type: 'increment' })}>+</button>
<button onClick={() => dispatch({ type: 'decrement' })}>-</button>
</div>
);
}
export default Counter;
```
| aadarsh-nagrath |
1,865,155 | Better Call your Agent! | Beyond Assistants & LLMs: The Rise of Agentic AI and Large Action Models The hype around... | 0 | 2024-05-26T10:41:05 | https://dev.to/worldlinetech/better-call-your-agent-3fp3 | llm, agents, agentic, ai | **Beyond Assistants & LLMs: The Rise of Agentic AI and Large Action Models**
The hype around language models like ChatGPT has been explosive - the real "Breaking Bad" moment of AI. But just like Walter White realized there was more to the game, the true players know language is just the start. So if you're ready to call in the heavy hitters that can actually get stuff done, you better call Saul... I mean your Agent ;)
Well, enough with this far-fetched pun. As my fellow compatriot Yan LeCun, Chief AI Scientist at Meta, recently affirmed at the Vivatech conference: generative AI has only 5 years left to live. Large Language Models are not the future of artificial intelligence because they lack four key characteristics: understanding the real world, having persistent memory, reasoning, and planning ability.
This article introduces AI Agents, how they work, how they differ from Chatbots and Copilots, and how Agentic AI represent the next step after the current hype around LLMs. In the world beyond the linguistic fireworks, a new breed of AI systems is emerging - one that doesn't just process language but perceives, reasons, and acts upon the world around them.
## What are AI Agents?
At their core, AI Agents are software systems that can perceive their environment, process that information, and take actions to achieve specific goals. Unlike traditional programs that simply follow a predefined set of rules, agents can make decisions and adapt their behavior based on the current state of their environment and their objectives.
AI Agents are often described as having properties like autonomy, reactivity, pro-activeness, and goal-orientedness. They can operate without constant human supervision, respond to changes in their environment, take the initiative to achieve their goals, and persistently work towards those objectives over extended periods. They interact with their environment through various modalities, such as vision, robotics, and control systems, in addition to natural language.
While ChatBots and language models are typically focused on generating human-like responses, Agents are designed to achieve specific goals efficiently, even if their actions may not always appear "human-like."
## How AI Agents Work
At the heart of an AI agent lies a decision-making process that determines how the agent should act in a given situation. This process typically involves several key components:
1. **Perception**: Agents receive inputs from their environment through sensors, such as cameras, microphones, or other data sources. This sensory information is processed and used to build an internal representation of the current state of the environment.
2. **State Estimation**: Based on the perceived inputs and the agent's prior knowledge, it estimates the actual state of the environment. This step often involves handling uncertainties, noise, and incomplete information.
3. **Goal Setting**: Agents have predefined goals or objectives they are trying to achieve. These goals can be static or dynamically adjusted based on the agent's current state and the environment.
4. **Planning**: Given the current state and the desired goal, the agent generates a plan or a sequence of actions that it believes will lead to achieving the goal. This may involve techniques like search algorithms, decision trees, or reinforcement learning.
5. **Action Selection**: The agent chooses the best action to take based on its plan and the current state. This decision-making process may involve evaluating the potential rewards and risks associated with each action.
6. **Action Execution**: The chosen action is then executed, potentially changing the state of the environment.
This cycle of perception, state estimation, planning, and action execution repeats continuously, allowing the agent to adapt its behavior based on the changing environment and progress towards its goals.
One of the key challenges in developing AI agents is teaching them how to make good decisions and take effective actions in complex, uncertain environments. This is where techniques like reinforcement learning come into play.
Reinforcement learning algorithms allow agents to learn from experience by taking actions in an environment and receiving rewards or penalties based on the outcomes of those actions. Over many iterations, the agent learns to associate certain actions with positive or negative outcomes, gradually refining its decision-making strategy to maximize long-term rewards.
Large Action Models (LAMs) are a specific type of AI agent that leverages deep reinforcement learning techniques to learn how to perform complex, multi-step tasks by taking sequences of actions over extended time horizons. These models can learn intricate behaviors in simulated environments before transferring that knowledge to real-world robotics or control systems.
## Agents vs. ChatBots and Copilots
While Chatbots, Copilots, and Agents all fall under the umbrella of Artificial Intelligence, they differ significantly in their design, capabilities, and intended use cases. Understanding these differences is crucial to appreciate the potential of Agentic AI and Large Action Models (LAMs).
*ChatBots*
ChatBots are designed primarily for natural language interaction with humans. Their main purpose is to understand and respond to user queries or commands in a conversational manner. They are typically built using Natural Language Processing (NLP) techniques, such as intent recognition, entity extraction, and language generation.
While ChatBots can be quite sophisticated in their language abilities, they are generally limited to the domain of text-based communication. They cannot directly perceive or interact with the physical world beyond the text interface.
*Copilots*
Copilots, or Digital Assistants, are a step up from ChatBots in terms of functionality. They are designed to assist users with a wider range of tasks, such as scheduling appointments, setting reminders, and retrieving information from various sources.
Copilots often integrate with other software applications and services, allowing them to perform actions like sending emails, creating calendar events, or controlling smart home devices. However, like ChatBots, their primary mode of interaction is still through natural language.
*AI Agents*
Unlike ChatBots and Copilots, Agents are not limited to natural language interaction. They are designed to perceive and interact with their environment through various modalities, such as vision, robotics, and control systems. They can navigate physical spaces, manipulate objects, and even control complex systems like vehicles or industrial machinery.
Moreover, agents are goal-oriented, meaning they are designed to achieve specific objectives rather than just responding to user queries or commands. They can plan and execute sequences of actions over extended periods to reach their goals, adapting their behavior based on the changing environment.
Agentic AI and Large Action Models (LAMs) take this concept of goal-oriented agents even further. LAMs are a class of AI agents that leverage deep reinforcement learning techniques to learn how to perform complex, multi-step tasks by taking sequences of actions over long time horizons.
These models can learn intricate behaviors in simulated environments and then transfer that knowledge to real-world robotics or control systems, enabling them to tackle a wide range of challenges, from playing complex games to controlling autonomous vehicles or industrial robots.
## The Potential of Agentic AI and Large Action Models
Agentic AI and LAMs (re)opens up a vast array of potential applications and possibilities.
*Robotics and Automation*
One of the most obvious applications is in the field of robotics and automation. These models could enable robots to learn and perform intricate tasks autonomously, from assembling products in factories to exploring remote or hazardous environments. By training in simulated environments, LAMs could acquire the necessary skills before being deployed in the real world, reducing the need for extensive manual programming and improving safety.
*Autonomous Vehicles*
Self-driving cars are often cited as a prime example of the potential of Agentic AI. LAMs could be trained in highly realistic simulations to navigate complex urban environments, anticipate and respond to unpredictable situations, and make split-second decisions to ensure the safety of passengers and pedestrians. This could accelerate the development and deployment of fully autonomous vehicles. For instance, companies like Tesla and Waymo are already exploring the integration of AI agents that can manage these sophisticated tasks independently.
*Gaming and Virtual Environments*
LAMs have already shown impressive results in mastering complex games and virtual environments, such as playing strategy games at superhuman levels or navigating 3D worlds. As these models continue to advance, they could lead to more intelligent and adaptive non-player characters (NPCs) in video games, as well as more realistic and engaging virtual simulations for training purposes.
*Healthcare and Scientific Research*
Agentic AI and LAMs could also have a significant impact on fields like healthcare and scientific research. These models could be trained to analyze complex medical data, simulate biological processes, or even control robotic surgical systems, potentially leading to more accurate diagnoses, personalized personalized treatments, and advanced medical procedures.
In scientific research, LAMs could be used to explore and analyze vast amounts of data, identify patterns and relationships, and even design and conduct virtual experiments, accelerating the pace of scientific discovery and innovation.
## Examples of Agentic AI in Action
1. [**Autodroid**](https://autodroid-sys.github.io): This system automates mobile tasks on Android devices using LLMs to generate instructions based on app-specific knowledge. It creates UI transition graphs to help LLMs understand GUI information and states, enabling it to complete tasks like deleting events from a calendar without direct user intervention.
2. [**LaVague**](https://www.lavague.ai): This open-source project marks a significant advancement in LAM technology by enabling the development of AI Web Agents. LaVague facilitates the automation of web interactions by converting natural language instructions into Selenium code, making it possible to perform complex tasks on the web efficiently and intuitively.
3. [**Rabbit R1**](https://www.rabbit.tech): Developed by Rabbit Research, this device uses LAMs to execute complex tasks across applications like Spotify, Uber, and DoorDash by learning from user interactions. It bypasses the need for APIs by focusing on understanding the structure and logic of applications.
These examples illustrate how Agentic AI and LAMs can bridge the gap between understanding human intentions and executing tasks in digital environments, making them a powerful tool for enhancing human-computer interaction.
## Conclusion - A New Era of Intelligent Agents
The development of intelligent agents capable of perceiving, reasoning, and acting in complex environments is not just an incremental advancement, but a paradigm shift that could reshape the way we think about and interact with AI systems.
These Agents, powered by LAMs and deep reinforcement learning techniques, are not mere passive respondents or narrow task performers. They are autonomous, goal-oriented entities that can adapt and learn from experience, continuously refining their decision-making strategies to achieve their objectives more efficiently.
However, as with any transformative technology, the rise of Agentic AI also raises important ethical and societal questions. Issues of safety, transparency, and accountability must be carefully considered as we develop increasingly capable and autonomous AI systems. We must ensure that these agents are aligned with human values and that their actions are governed by clear ethical principles and guidelines.
By focusing on the realistic capabilities and carefully evaluating the impact of these technologies, we can harness the full potential of Agentic AI and Large Action Models to drive innovation and improve our daily lives across various domains. | raphiki |
1,865,529 | The 7 Laws of the Spirit World: Navigating the Unseen Realms | "The 7 Laws of the Spirit World" delves into the foundational principles that govern the unseen... | 0 | 2024-05-26T10:35:26 | https://dev.to/mr_nags_0df5a4fe81b8d67a/the-7-laws-of-the-spirit-world-navigating-the-unseen-realms-44ae | "The [7 Laws of the Spirit World](https://articles.hazratsultanbahu.com/7-laws-of-the-spirit-world/)" delves into the foundational principles that govern the unseen realms. This insightful guide explores the fundamental laws that influence our spiritual existence, shaping our experiences and interactions beyond the physical plane. From the law of attraction to the law of karma, each principle is explained in depth, offering practical wisdom for spiritual growth and enlightenment. Whether you seek to understand the afterlife, connect with higher consciousness, or enhance your spiritual journey, this book provides a roadmap to navigate the mysteries of the spirit world with clarity and confidence. | mr_nags_0df5a4fe81b8d67a | |
1,865,525 | Let's Talk Cloud Computing | When people hear, cloud computing or the cloud they see it as something very supernatural, vague and... | 27,517 | 2024-05-26T10:30:27 | https://oputaolivia.hashnode.dev/lets-talk-cloud-computing | When people hear, cloud computing or the cloud they see it as something very supernatural, vague and complex at least I did. This article is the first of my cloud series where I would be breaking down these cloud concepts.
---
## Let's Define Cloud Computing
Cloud Computing is providing computing services or resources (storage, computing power and network) over the internet. It is simply delivering computing resources (storage, compute power, networking and so on) that’s virtual to a user via the internet.
>💡Major thing to note is that these computing resources are virtual to a user, that is the user does not have physical access to these resources, but they can access then through the internet.
## Why the Name Cloud?
When people hear cloud, they think these resources are somewhere up there😬. Unfortunately, that’s not the case. The word cloud is more like a metaphor to describe something that is virtual to a user. It’s presumed that the users do not actually have physical access to these services in as much as these services are in a physical location.
## Before the Cloud
Let’s look into how applications are deployed before cloud computing came about. It is quite important to look at how things were done before and what exactly cloud computing is solving.
Traditionally, to deploy an application an organization or individual has to buy servers with the correct memory and storage requirements, keep them on-premises and use them to host their applications. This brought about a lot of capital cost (purchasing servers) alongside operational costs (electricity, employing skilled professionals or training staffs). Aside from the **costs**, there were issues of **security**, that is ensuring that the servers are safe from attacks, and **scaling** issues. Scaling involves increasing or decreasing the number of computing resources.
Thanks to cloud computing, users can scrape out the capital costs that comes with deployment, instead they pay for what they use without bothering about the security of these servers. Finally, with cloud computing scaling is quite easy as users can add or remove resources easily.
>💡You can see cloud computing as paying for utility bills instead of building your private or personal power station in your backyard which would be more expensive. You have to worry about the safety of the power station, so you don’t have your neighbors tapping light without your consent. Finally, when you are producing excess electricity there won’t be enough appliances to feed and it would be difficult to scale down.
## Categories of Cloud Computing
Cloud computing can be categorized based on deployment model and type of services provided.
### Deployment Model
Cloud computing can be divided into 3 types based on deployment model which includes.
* **Public Cloud**: In public cloud, resources and services are offered by third party providers (cloud service providers like AWS, Azure, GCP and so on) over the internet. These resources are offered and shared to multiple users or organizations as a pay-as-you-go basis.
* **Private Cloud**: In private cloud, the resources are dedicated solely to a single organization or user. It can be hosted on-premises or by a third-party provider.
* **Hybrid Cloud**: From the name, the hybrid cloud combines the elements of the public and private cloud. It is a perfect solution for organizations that want to migrate from an on-premises to cloud services.
### Type of Service
In terms of services offered, cloud computing can be divided into.
* **Infrastructure as a Service (IaaS)**: This is a type of cloud computing whereby cloud service providers are responsible for providing the computing resources or infrastructures (servers, storage and network) but the client or user is in control of these infrastructures (security, providing information and so on). Example: Azure Virtual machines.
* **Platform as a Service (PaaS)**: This is a type of cloud computing that provides users the ability to develop and deploy applications without actually bothering about the management of the infrastructures. This service allows developers to focus more on the code implementation. Example: Azure web apps.
* **Software as a Service (SaaS)**: This type of cloud service allows users to access a software by organization on the cloud via a subscription. The user does not need to install any application on their local device, instead the software can be accessed via the web or an API. Example: Microsoft 365.
>💡The shared responsibility model from Microsoft Learn above helps you understand the cloud deployment model better. It just shows who is responsible for securing different aspects of the cloud computing environment between the cloud service providers (In this case Microsoft) and the user.
## Cloud Computing Concepts
Let’s look at some cloud jargons that we might have heard.
* **Visualization**: You can see virtualization as creating the virtual version of something for instance your computer hardware. This concept brings about virtual machines and virtual desktops. It allows you to utilize the full capacity of a physical machine by sharing it among multiple people or users at once.
>💡Virtualization solves the problem of underutilized hardware resources for instance; an organization is running 3 servers (one for legal & compliance purposes, one for email services and last for web hosting) unfortunately each server are used to about 25% of its capacity which is a quarter of their capacity. With virtualization, you can split one of these servers into 3 unique that can handle independent tasks, so this way servers are effectively and efficiently utilized with less cost.
* **Containerization**: In simple terms containerization is a form of virtualization that allows you to package and tun applications and their dependencies in units called a container. containers provide a consistent and isolated environment, ensuring that an application runs smoothly across various computing environments. Different systems or environments have different operating systems, and these operating systems need different dependencies or requirements to run certain applications.
>💡As a developer we get to hear things like “<strong>it’s working on my own system but it’s not working on yours</strong>”, this is the issue containerization is trying to resolve.
* **Serverless Computing**: When people hear serverless computing, they assume there are no servers involved. Just like in cloud computing resources are not in the cloud, in serverless computing servers are also involved. Instead serverless computing simply means that cloud providers allocate resources to users on a demand basis. Serverless computing is event driven, works on the pay as you go basis and involves auto-scaling.
>💡Let’s use a dinner party as an analogy. Let’s say you are hosting a group of friends for dinner, instead of preparing a single meal for all to eat, you create a menu and hire a team of chefs to prepare a fresh meal for anyone based on their order.
## Cloud Service Providers
Before a cloud resource can be accessed or used, one needs to go through a cloud service provider.
Cloud Service Providers are firms or companies (people) that offer cloud resources. There are several cloud service providers like Microsoft Azure, Amazon Web Services (AWS), Google Cloud Platform (GCP), Oracle, IBM and so on.
Throughout this series, we would be working with Microsoft Azure, looking at its different services, where when and how to utilize these services.
---
| oliviaoputa_ | |
1,865,130 | day 7 | date: 26 May, 2024. Importing from module:- To import a module(file) in our code we use: import... | 0 | 2024-05-26T10:30:14 | https://dev.to/lordronjuyal/day-7-1eb5 | date: 26 May, 2024.
Importing from module:- To import a module(file) in our code we use: import module_name. But this may increase the size of our file. If we want only one method from the module we can use: from module import function_name. It will only import that function from the module file.
Other things I learned:
1. from os import system -- If we require to clear the console screen when the program is running we can import this and use: system("clear")
2. Docstring -- We can create documentation of our user-defined function using this. Just after the first line of function definition[def func_name():], use multiple line string("""... """") to write what function does, variables it can take, etc. Now whenever we call this function the user can see this comment on hovering over that function call.
3. We can use dictionary to store function names.
eg def func1:
.....
def func2:
.....
dic= { key1 : func1, #no () so it won't call the function
....
variable1=dic[key1]
this will copy the function into variable1 and we can use
variable1()
4. Recursion - this is a process in which function keeps on calling itself and the process continues. It is just like a while loop. So we need to have a termination condition in it.
5. for index, item in enumerate(list):
Above is the for loop by which we can get the item and their index value in the list. Otherwise, we have to use another variable =0 and +1 in each iteration.
6. We can't call a function before we define it.
Program I made:
1. Auction app - using dictionary
2. Calculator app
https://replit.com/@rohitrj332024/Calculator#main.py
3. Blackjack -This took much of my time. But I am happy I completed it without watching the tutorial. Code may not be proper but I tried my best to use functions and comments to help myself in future. Making flowchart in advance and breaking program into smaller problems helped me a lot. I hope with practice I will improve more.
https://replit.com/@rohitrj332024/blackjack-day-7#main.py
----------------------------------------------------------
Personal --> Coding the project took much of my time. I wanted to jump fast but I think consistency matters more. I am happy that I was able to code a game though my code may be messy or unprofessional, but coding it gave me great satisfaction. Now my brain needs some rest.
| lordronjuyal | |
298,299 | What Is BEST LED STRIP LIGHTS? | BEST LED STRIP LIGHTS The many advantages of LED lighting have prompted many people in com... | 0 | 2020-04-03T21:39:47 | https://dev.to/ledligh91721060/what-is-best-led-strip-lights-4p65 | ##[BEST LED STRIP LIGHTS](https://bestledadviser.com/best-led-strip-lights-reviews/)##
The many advantages of LED lighting have prompted many people in companies and private households to switch to LED light. Save money and offer many other benefits
Your goals: What exactly do you want to achieve? For example, there is little point in using a 20W LED spotlight to illuminate a small wall in the hallway if you can really use a 4W down light to achieve the desired effect. The market has so many options when it comes to LED lights, and you need to know your goals first to make the right decision.
Watts
Determine the luminous flux you receive at the end of the day. The brand of LED chips has a direct effect on the brightness, while the color of the LED influences the luminous flux. The type of materials and their quality can also influence the brightness, so that different LED lamps deliver different light outputs with the same output due to manufacturing differences.
The lights
They measure the total amount of light emitted by the light source, and the brightness of the lights in the LED area varies. To find out which lamps are brighter, you need to use lumens instead of watts.
Beam angle
The LED strip lighting uses a beam angle of 120 When using LED down lights and spotlights, however, the most suitable beam angle must be taken into account. For example, a beam angle of 60 may be suitable for ceilings with a height of 2.5 to about 3.5 m, while ceilings with a height of more than 5 m can best be served with a beam angle of 24 to 30 .
Color reproduction
It is the ability of the light source to get a true reflection of the colors on the illuminated object. The higher the color rendering index, the closer the lighting is to daylight and daylight shows the object or area perfectly.
In order to obtain the best led strip lights, the properties of the housing assembly, the heat distribution, the quality, the guarantee and the heat management technology must be taken into account. You should also get your lights from a reliable and trustworthy supplier. | ledligh91721060 | |
1,865,524 | Microsoft VS2022 Cascadia Code font | Introduction Microsoft Visual Studio besides being a great IDE provides the ability to... | 21,985 | 2024-05-26T10:27:01 | https://dev.to/karenpayneoregon/microsoft-vs2022-cascadia-code-font-2400 | vscode, software, developer | ## Introduction
Microsoft Visual Studio besides being a great IDE provides the ability to customize the working environment. Most developers tend to stop customizing at the [theme](https://devblogs.microsoft.com/visualstudio/custom-themes/), dark, light or a third party theme along with font size.
Here, learn how to change the font which for equality operators and lambda operators can be easier to understand for both developers and those performing code reviews.
## More accessibility and flexibility in editor fonts
In Visual Studio 2022 Cascadia Code and introduced Cascadia Mono as a default font. Cascadia is a new, modern, monospaced font family that provides better flexibility for command-line applications and text editor experiences. Cascadia Mono, which you may recognize from the new Terminal, was designed for optimal legibility and accessibility. Cascadia Code is also included in 2022 as an option for developers who use programming “ligatures” – glyphs automatically created by combining characters that many developers find more readable.
The cool font gives us the following.
## Steps to change to Cascadia Code font
From Visual Studio menu, select Tools, Options. Next select Fonts and colors.
Text Editor is selected. Select the dropdown and pick one of the Cascadia Code fonts followed by clicking Ok button to try out the font.
> **Note**
> Cascadia Mono, which is the same as Cascadia Code but without ligatures
## Microsoft Visual Code
To match VS Code font with Visual Studio.
Press <kbd>CTRL</kbd> + <kbd>,</kbd> to access the settings window followed by typing font in the search input.
Next enter **'Cascadia Code', Consolas, 'Courier New', monospace** for font family.
## Summary
Steps have been provided to have a fresh appearance for both Visual Studio 2022+ and Visual Studio Code. | karenpayneoregon |
1,859,107 | Reasons you might not know why there are two, a local and a session storage. | As a web developer, I wondered why there are two storages in browsers a session and a local storage.... | 0 | 2024-05-26T10:17:46 | https://dev.to/meetbhalodiya/reasons-you-might-not-know-why-there-are-two-a-local-and-a-session-storage-2jbl | javascript, webdev, react | As a web developer, I wondered why there are two storages in browsers a session and a local storage. On searching about it I got that the only difference is about how long the data stays. I said okayyy...! After that, I never bothered about this thing again.
While working with a huge client I found some challenges/errors which were solved when I transferred some data from session storage to local storage.
I thought to take a deeper dive into this thing! So here I am sharing the exact details that answer the question of why we have local and session storage.
<hr/>
##Defination wise:
Local and session storage are both part of the Web Storage API, which allows websites to store data on the client side within the user's browser.
If you, my friend are a developer then this definition should be enough for you! (for the similarities, not the differences 😅)
Below are the indeed required details:
##Persistence Duration
Local Storage: Data stored in local storage has **no expiration time**. It remains available even after the browser is closed and reopened, providing a way to persist data across sessions. This is useful for data that needs to be kept between visits to the website, such as **user preferences, settings, or state information**.
Session Storage: Data stored in session storage is only **available for the duration of the page session**. It is cleared when the page session ends, which typically happens when the browser tab or window is closed. This is ideal for temporary data that should only be available during a single session, such as **form inputs or state information specific to that session**.
<hr/>
##Scope (That's where I was stuck)
Local Storage: Accessible by all tabs and windows that **share the same origin** (same protocol, host, and port). This means if a user opens multiple tabs on the same site, they can all access the same local storage data.
Session Storage: Isolated to the tab or window where it was created. **Different tabs or windows do not share session storage**, even if they are on the same site. This ensures that data is isolated per session, preventing potential conflicts or data leakage between tabs.
<hr/>
##Use Cases
Local Storage: Storing user preferences and settings. Caching data can improve performance by avoiding repeated network requests.
Persisting user state or information across sessions.
Session Storage: Temporary storage for data during a single session, such as form data that hasn't been submitted yet. Information that should be cleared when the user closes the tab, like temporary state information that is session-specific.
<hr/>
##Security Considerations
Local Storage: Since data persists indefinitely, it can be a target for attackers if sensitive information is stored without proper security measures. It is essential to avoid storing sensitive data like passwords or personal information in local storage.
Session Storage: Data has a shorter lifespan, reducing the risk window for potential exploitation. However, it still should not be used for highly sensitive information without proper security measures.
<hr/>
That's all!!
This is all the stuff that I could find out. If you have any other thing in mind which I missed just go to comments and mention about the same!
Stay happy, Keep hustling
Signing off Meet Bhalodiya,
Peace ✌️ | meetbhalodiya |
1,865,515 | JavaScript Side Project | Involving myself in Web3 and WebGL, the future of the web. Can be played on grimwraith.vercel.app ! | 0 | 2024-05-26T10:14:42 | https://dev.to/anradev/javascript-side-project-347j | webdev, web3, javascript | Involving myself in Web3 and WebGL, the future of the web. Can be played on grimwraith.vercel.app ! | anradev |
1,865,513 | AI Company Name Generator: Unleashing Creativity and Innovation | Introducing the AI Company Name Generator, a state-of-the-art tool designed to assist entrepreneurs... | 0 | 2024-05-26T10:10:31 | https://dev.to/mr_nags_0df5a4fe81b8d67a/ai-company-name-generator-unleashing-creativity-and-innovation-58hg | ai, ainamegernerator | Introducing the [AI Company Name Generator](https://3tiatech.com/ai-company-name-generator/), a state-of-the-art tool designed to assist entrepreneurs and businesses in finding the perfect name. This intelligent system utilizes advanced algorithms and linguistic patterns to produce unique, memorable, and brand-aligned company names. Whether you are launching a startup, rebranding, or seeking inspiration, the AI Company Name Generator offers a swift, effective, and creative solution. With just a few inputs, you can generate a list of potential names that resonate with your vision and values, providing your business with a strong and distinctive identity in a competitive market. | mr_nags_0df5a4fe81b8d67a |
1,865,511 | I scraped all DevOps Interview Questions for Meta, Amazon, Google, Yahoo... here they are.. | Hi Folks, For past month I was scraping interview questions for Amazon, Google, Meta, Netflix,... | 0 | 2024-05-26T10:02:36 | https://dev.to/alexmuradov/i-scraped-all-devops-interview-questions-for-meta-amazon-google-yahoo-here-they-are-20li | devops, sre | Hi Folks,
For past month I was scraping interview questions for Amazon, Google, Meta, Netflix, Yahoo, Cloudflare, Accenture etc.. in various sources, filtering useful questions (imho) and rewriting them in more details with solutions.
publishing it here - [https://prepare.sh/engineering/devops](https://prepare.sh/engineering/devops) (if you'll have issues with login please clean cookies).
Also I will keep adding companies/question to have around 50+ top companies with their interview questions, so its work in progress.. If you find this type of content useful and want to help me with code/content/etc pls dm me :) | alexmuradov |
1,865,510 | "Streamlining CI/CD: A Step-by-Step Guide to Setting Up Jenkins on Docker" | How to Set Up Jenkins on Docker Introduction Jenkins is a widely-used open-source automation server... | 0 | 2024-05-26T10:00:49 | https://dev.to/prajwal2023/streamlining-cicd-a-step-by-step-guide-to-setting-up-jenkins-on-docker-2b6 | devops, aws, jenkins, docker | How to Set Up Jenkins on Docker
**Introduction**
Jenkins is a widely-used open-source automation server that helps automate the non-human part of the software development process. Docker, on the other hand, is a platform that enables developers to create, deploy, and run applications in containers. Combining Jenkins with Docker provides a powerful tool for continuous integration and continuous delivery (CI/CD).
In this guide, we'll walk through the steps to set up Jenkins on Docker.
**Prerequisites**
- Docker installed on your system.
- Basic understanding of Docker and Jenkins.
- Sufficient privileges to run Docker commands.
Setting up Jenkins on Docker offers several advantages that can streamline and enhance your CI/CD workflow. Here are the key reasons why you might choose to deploy Jenkins using Docker:
**1. Consistency and Isolation**
Consistency: Docker containers ensure that Jenkins runs in a consistent environment across different development, testing, and production environments. This consistency helps eliminate issues caused by variations in software configurations.
Isolation: Docker containers isolate Jenkins and its dependencies from other applications on the host system. This isolation helps prevent conflicts and makes it easier to manage dependencies.
**2. Simplified Setup and Configuration**
Ease of Setup: Docker simplifies the setup process by allowing you to pull and run pre-configured Jenkins images. This reduces the complexity involved in manually installing Jenkins and configuring its environment.
Configuration Management: Docker makes it easy to version and manage configurations through Dockerfiles and Docker Compose, ensuring that your Jenkins setup can be easily replicated or modified.
**3. Portability**
Docker containers can run on any system that supports Docker, making your Jenkins setup highly portable. This portability is particularly useful for developers working in different environments or for teams that need to move their CI/CD pipeline across various stages of development and production.
**4. Scalability**
Resource Allocation: Docker allows you to allocate specific resources (CPU, memory) to Jenkins containers, ensuring that Jenkins performs optimally without affecting other applications.
Scaling: Running Jenkins in Docker containers makes it easier to scale your CI/CD infrastructure. You can quickly spin up additional Jenkins instances to handle increased workloads or parallelize build processes.
**5. Simplified Maintenance and Upgrades**
Upgrades: Upgrading Jenkins is straightforward with Docker. You can pull the latest Jenkins image and recreate the container without worrying about breaking the underlying system.
Backup and Recovery: Docker volumes can be used to persist Jenkins data, making it easier to backup and restore configurations, jobs, and build history.
**6. Security**
Sandboxing: Docker containers provide an additional layer of security by sandboxing Jenkins from the host system. This reduces the risk of potential vulnerabilities in Jenkins affecting the host.
Controlled Access: Docker's networking and permission features allow for fine-grained control over how Jenkins interacts with other services and the network.
**7. DevOps Integration**
Docker is a staple in modern DevOps practices. Running Jenkins on Docker integrates seamlessly with other containerized services and tools in your DevOps pipeline, promoting a more cohesive and efficient workflow.
**Step-by-Step Guide**
**Step 1: Install Docker**
Before setting up Jenkins, ensure Docker is installed on your machine.
For Ubuntu:
```
sudo apt update
sudo apt install -y docker.io
sudo systemctl start docker
sudo systemctl enable docker
```
**Step 2: Pull the Jenkins Docker Image**
Jenkins maintains an official Docker image. To pull the latest Jenkins image, run:
```
docker pull jenkins/jenkins:lts
```
The lts tag refers to the Long Term Support version, which is stable and recommended for most users.
**Step 3: Run the Jenkins Container**
Create and start a Jenkins container with the following command:
```
docker run -d -p 8080:8080 jenkins/jenkins:lts
```
Here's a breakdown of the command:
-d: Run the container in detached mode.
-p 8080:8080: Map port 8080 of the host to port 8080 of the container (Jenkins web int)
**Step 4: Access Jenkins**
Once the container is running, you can access Jenkins by navigating to http://localhost:8080 in your web browser.
**Step 5: Unlock Jenkins**
On your first visit, Jenkins will ask you to unlock it using a password stored in the Docker container. Retrieve this password with:
```
docker exec -it jenkins bash
cat /var/jenkins_home/secrets/initialAdminPassword
```
Copy the password and paste it into the Jenkins unlock page.
**Step 6: Install Suggested Plugins**
After unlocking Jenkins, you'll be prompted to install plugins. Choose the "Install suggested plugins" option to get started quickly.
**Step 7: Create an Admin User**
Next, you'll need to create an admin user. Fill in the required details and complete the setup.
**Step 8: Configure Jenkins**
1. Now that Jenkins is set up, you can start configuring it to suit your project needs. This includes setting up:
2. Global Tool Configuration: Define the locations for JDK, Git, Gradle, etc.
3. Credentials: Add necessary credentials for accessing repositories and other tools.
4. Jobs/Pipelines: Create jobs or pipelines for your CI/CD process.
**Conclusion**
Deploying Jenkins on Docker simplifies the setup and management of your CI/CD pipeline. Docker containers provide a consistent environment for Jenkins, enhancing the reliability and scalability of your build process.
By following the steps outlined in this guide, you will have a fully functional Jenkins server running in a Docker container. This setup allows you to explore and leverage Jenkins' extensive range of plugins and configurations to further optimize your CI/CD workflow. | prajwal2023 |
1,865,509 | Enhancing Next.js Projects with CSS Support Using '@zeit/next-css' | An in-depth guide on how to integrate traditional CSS into Next.js projects with the help of '@zeit/next-css' package to enhance styling capabilities. | 0 | 2024-05-26T10:00:40 | https://dev.to/itselftools/enhancing-nextjs-projects-with-css-support-using-zeitnext-css-544n | nextjs, webdev, css, javascript |
At [itselftools.com](https://itselftools.com), we have leveraged the power of Next.js in conjunction with Firebase to develop over 30 dynamic, scalable web applications. Our extensive experience has taught us numerous best practices and optimization techniques, one of which includes integrating traditional CSS into Next.js projects for enhanced styling capabilities. This article will dive deep into how the 'next.config.js' configuration can be optimized to support CSS files using the '@zeit/next-css' plugin.
### Understanding the Code
```javascript
const withCSS = require('@zeit/next-css');
module.exports = withCSS({
webpack(config, options) {
config.module.rules.push({
test: /\.css$/,
use: ['style-loader', 'css-loader', 'postcss-loader']
});
return config;
}
});
```
This code snippet is a critical component for enabling traditional CSS in your Next.js projects. '@zeit/next/css' simplifies the integration of CSS files into your Next.js build. Here's a breakdown of each part of the code:
- `require('@zeit/next-css')`: This imports the necessary package to handle CSS in Next.js projects.
- `module.exports = withCSS({...})`: This function wraps your Next.js configuration with additional settings to handle CSS files, effectively enhancing the build process.
- `webpack(config, options)`: It is a function that modifies the default Webpack configuration used by Next.js. This function is crucial for specifying how CSS files should be handled during the build process.
- `config.module.rules.push(...)`: This part adds a new rule to the Webpack configuration. The rule targets files ending in '.css' with the specified loaders.
- `test: /\.css$/`: This regular expression matches all .css files within your project.
- `use: ['style-loader', 'css-loader', 'postlog-loader']`: These loaders are essential for processing CSS files. Here’s what each does:
- `style-loader`: Injects CSS into the DOM via a `<style>` tag.
- `css-loader`: Interprets `@import` and `url()` like `import/require()` and will resolve them.
- `postcss-loader`: Processes CSS with PostCSS, a tool for transforming styles with JS plugins.
### Benefits of Using '@zeit/next-css'
1. **Simplified Configuration:** Streamlines the integration of CSS into your Next.js projects.
2. **Enhanced Styling Capabilities:** Allows for more complex styling frameworks and pre-processors alongside your application logic.
3. **Optimized Build Process:** Improves the handling of static assets which boosts performance and efficiency.
### Conclusion
Incorporating CSS into Next.js using '@zeit/next-css' not only simplifies the development process but also enhances the project's styling flexibility. For those interested in seeing these configurations in action, feel free to visit some of our applications like [optimize your images](https://online-image-compressor.com), [extract files easily](https://online-archive-extractor.com), and [manage disposable emails](https://tempmailmax.com) which utilize complex configurations effectively.
| antoineit |
1,865,485 | Docker Build with Mac | Docker is a popular containerization platform that allows developers to package their applications... | 0 | 2024-05-26T09:56:33 | https://dev.to/anilxnmdrz/docker-build-with-mac-2j9d | docker, mac |
Docker is a popular containerization platform that allows developers to package their applications and dependencies into portable containers. This article provides a step-by-step guide on how to build Docker images on a Mac with an M1 chip.
### Solution Steps
Docker features an additional build called 'buildx' that should be included with the Docker installation (ver:^20). We will use the `buildx` command to build the image.
#### Step 1
Open Docker Desktop and go to Settings > Resources tab. Increase memory and swap size, and restart Docker Desktop, so that later we do not run into the `JavaScript heap out of memory` error.
#### Step 2
Also, add and modify the following command in the `node-project/Dockerfile`.
OLD DOCKERFILE
```dockerfile
### STAGE 1: Build ###
# We label our intermediary docker container as 'builder' to build/compile frontend dependencies
FROM node:10.15.0-alpine as builder
ARG environment
```
NEW DOCKERFILE
```dockerfile
### STAGE 1: Build ###
# We label our intermediary docker container as 'builder' to build/compile frontend dependencies
FROM --platform=$BUILDPLATFORM node:10.15.0-alpine as builder
ARG environment
ENV NODE_OPTIONS=--max_old_space_size=2048
```
#### Step 3
Generally, the CPU of your machine can only run binaries for its native architecture. An x86 CPU can't run ARM binaries and vice versa. So, when we are building an image on an Intel machine, it cannot run the shell binary for ARM. Let's install the Docker image which contains binaries for other architectures.
```bash
$ docker run --privileged --rm tonistiigi/binfmt --install all
```
#### Step 4
Create a new builder using the `docker-container` driver which gives you access to more complex features like multi-platform builds and the more advanced cache exporters, which are currently unsupported in the default Docker driver:
```bash
$ docker buildx create --name customBuilder --driver docker-container --bootstrap
$ docker buildx use customBuilder
```
#### Step 5
Build & load image locally
The command below will build an image for standard x86 platforms (`linux/amd64`). For Apple Silicon Macs, use the platform as (`linux/arm64`).
[Note: run the command from the project directory]
```bash
$ docker buildx build --platform=linux/amd64 -t <tag> --build-arg environment=<env> . --load
```
Build & push image directly
```bash
$ docker buildx build --platform=linux/amd64 -t <tag> --build-arg environment=<env> . --push
``` | anilxnmdrz |
1,865,508 | Understanding JavaScript keyword var, let, const and hoisting. | Good day, everyone! Today, we'll explore how var, let, and const work and how hoisting affects... | 0 | 2024-05-26T09:51:50 | https://dev.to/sromelrey/understanding-javascript-keyword-var-let-const-and-hoisting-jhh | javascript, beginners, programming, tutorial | Good day, everyone! Today, we'll explore how `var`, `let`, and `const` work and how hoisting affects each.
Before we dive in, I recommend reading my blog on execution context for a deeper understanding of hoisting.
[JavaScript Execution Context and JS Engine Components](https://dev.to/sromelrey/javascript-execution-context-and-js-engine-components-1kem)
### Goals and Objectives in this topic:
- Understand how `var`, `let`, and `const` works under the hood.
- How hoisting affects each keyword.
- What is Temporal Dead Zone ?
The keyword `var`, `let`, and `const` is what we use when declaring a variable in JavaScript.
Let's start with the `var` keyword before ES6 declaring variable can only be done using `var` the following are the features of this keyword:
### `var` keyword:
- **Function Scope:** Variables declared with `var` are scoped to the function in which they are declared.
- **Hoisting:** Variables are hoisted to the top of their scope and initialized with `undefined`.
- **Re-declaration:** The same variable can be declared multiple times within the same scope without causing an error.
- **Global Object Property:** If declared outside a function, var becomes a property of the global object (e.g., window in browsers).
The 'let' and 'const' keywords are features introduced in ES6, addressing the shortcomings of the 'var' keyword.
Here's a list of how and what you can use this keywords:
### `let` keyword:
- **Block Scope:** Variables declared with `let` are scoped to the block in which they are declared (e.g., inside a `{}`).
- **Hoisting:** Variables are hoisted but not initialized, leading to a **_temporal dead zone_** until the declaration is encountered.
- **Re-declaration:** Cannot be re-declared within the same scope, preventing accidental redefinitions.
- **Temporal Dead Zone:** Accessing the variable before its declaration results in a Reference Error.
### `const` keyword:
- **Block Scope:** Variables declared with const are scoped to the block in which they are declared.
- **Hoisting:** Variables are hoisted but not initialized, leading to a **_temporal dead zone_** until the declaration is encountered.
- **Re-declaration:** Cannot be re-declared within the same scope, similar to let.
- **Immutability:** Must be initialized at the time of declaration and cannot be reassigned. However, if the variable holds an object, the object's properties can still be modified.
- **Temporal Dead Zone:** Accessing the variable before its declaration results in a Reference Error.
### Understanding how hoisting works with different keywords
What is hoisting? Hoisting is a feature in JavaScript that allows you to use variables or invoke functions before they are declared. Here's a sample code to illustrate this concept:
##### Here's a sample code of hoisting using `var` and `function declaration`
```javascript
// * Accessing the 'age' variable before it is initialized
console.log(age);
// ? Will log undefined
var age = 12;
// * Invoking the 'logAge' function before it is declared
logAge(age);
// ? Will log AGE is 12
// * Invoking logAge Function Declaration before it's being declare
function logAge(ageArg) {
console.log(`log AGE is ${ageArg}`);
}
```
##### Here's a sample code of hoisting using `let` and `const` and `function expression`
```javascript
// * Accessing let age before it's initialization
console.log(age);
let age = 12;
// * Invoking logAge Function Expression before it's being declare
logAge(age);
let logAge = function () {
console.log(`log AGE is ${ageArg}`);
};
```
> I will write a separate blog post under the topic of functions to further explain how hoisting works with function expressions and function declarations when invoking a function.
### Temporal Dead Zone
The **_temporal dead zone_** starts from the block until the `let` or `const` variable declaration is processed. In other words, it is the location where you cannot access the let variables before they are defined.
Here's a sample code to demonstrate the **_TDZ_**
``` javascript
console.log(myVar); // ReferenceError: Cannot access 'myVar' before initialization
let myVar = 10;
console.log(myVar); // Output: 10
```
> Although 'let' and 'const' are hoisted, accessing them before their declaration results in a Reference Error, unlike 'var' which returns undefined. This behavior is known as the 'temporal dead zone."
## Conclusion
Understanding how var, let, and const work and how hoisting affects each keyword is crucial for writing efficient JavaScript code.
- `var` is function-scoped, hoisted, and can be re-declared within the same scope, which can lead to unexpected behaviors.
- `let` and `const` are block-scoped, also hoisted but not initialized until their declaration, leading to the temporal dead zone which prevents access before initialization.
- `const` also enforces immutability, meaning it must be initialized during declaration and cannot be reassigned.
**_Hoisting_** allows functions and variables to be used before they are declared, but understanding the nuances between these keywords helps prevent common pitfalls, such as reference errors or unintended variable reassignments. For more details on hoisting with function expressions and declarations, stay tuned for my upcoming blog post.
Thanks for reading 😁😁😁😁
| sromelrey |
1,865,507 | Kinds of Mysql Error fix | Warning "unsaved changes" when switching... | 0 | 2024-05-26T09:51:30 | https://dev.to/asepher/kind-of-mysql-error-fix-3p46 |
Warning "unsaved changes" when switching database
https://github.com/phpmyadmin/phpmyadmin/issues/19000
https://www.aurodigo.com/how-to-solve-fatal-error-maximum-execution-time-of-300-seconds-exceeded-phpmyadmin-problem-in-xampp
https://community.apachefriends.org/f/viewtopic.php?t=82396&p=277705
| asepher | |
1,865,501 | Solving GSA SER Issues with Advanced Captcha Technology | In the competitive world of digital marketing, GSA Search Engine Ranker (SER) stands out as a... | 0 | 2024-05-26T09:40:30 | https://dev.to/media_tech/solving-gsa-ser-issues-with-advanced-captcha-technology-2oll | In the competitive world of digital marketing, GSA Search Engine Ranker (SER) stands out as a powerful tool for automating the process of building backlinks. However, one significant challenge users face is solving captchas efficiently. This comprehensive guide will delve into the intricacies of solving GSA SER using a captcha solver, offering detailed insights and practical solutions to enhance your SEO efforts.
**Understanding the Role of Captchas in SEO**
Captchas are designed to differentiate between human users and automated bots, safeguarding websites from spam and malicious activities. For SEO tools like GSA SER, overcoming captchas is crucial for successful link building. Captchas come in various forms, such as text-based, image-based, and more complex puzzles, each requiring a unique approach for resolution.
**The Importance of Captcha Solvers in GSA SER**
In GSA SER, captcha solvers are essential to automate the process of solving these puzzles, ensuring uninterrupted link building. Without an effective captcha solver, the efficiency of GSA SER is significantly hindered, leading to reduced success rates in posting links and, consequently, lower search engine rankings.
**Choosing the Right Captcha Solver**
**Key Features to Look For**
**When selecting a captcha solver for GSA SER, consider the following features:**
**Accuracy:** The ability to solve a wide variety of captchas with high accuracy.
**Speed:** Quick processing to avoid delays in submissions.
**Cost:** Affordability, especially for high-volume users.
**Integration:** Seamless integration with GSA SER for optimal performance.
**Integrating External Captcha Solvers with GSA SER**
**Step-by-Step Integration Guide**
**Register for a Captcha Solver Service:** Choose a reliable captcha solver and create an account. Obtain the API key provided by the service, which will be used for integration with GSA SER.
**Access GSA SER Settings:** Open GSA SER and navigate to the settings menu. Locate the captcha settings section, where you can configure external captcha solvers.
**Add Captcha Solver Details:** Input the API key and other required details into the respective fields for the captcha solver service you are using. Ensure all settings are correctly configured to enable smooth operation.
**Test the Integration:** Before deploying your campaigns, test the captcha solver to confirm it is correctly integrated and functioning as expected.This step is crucial to avoid disruptions during live campaigns.
**Optimizing Captcha Solver Settings**
To maximize the efficiency of your captcha solver, consider the following optimization tips:
**Adjust Retry Limits:** Set appropriate retry limits for captcha solving attempts to balance accuracy and speed. Too many retries can slow down the process, while too few can result in unsolved captchas.
**Prioritize Captcha Types:** Configure your settings to prioritize solving certain types of captchas based on their complexity and the capabilities of your chosen solver.
**Monitor Performance:** Regularly monitor the performance of your captcha solver. Track success rates and response times to identify any issues that may require adjustment.
**Advanced Techniques for Solving Captchas**
**Using OCR-Based Solvers**
Optical Character Recognition (OCR) technology is used by advanced captcha solvers to interpret and solve text-based captchas. OCR-based solvers are highly effective for simple to moderately complex captchas, offering a balance between speed and accuracy.
**Employing Human-Based Captcha Solvers**
For the most challenging captchas, human-based solvers provide the highest accuracy. Services like DeathByCaptcha and 2Captcha offer human solvers who manually solve captchas, ensuring high success rates. While more expensive, this method is invaluable for critical campaigns requiring precise results.
**Combining Multiple Solvers**
Utilizing a combination of different captcha solvers can significantly enhance your GSA SER efficiency. By configuring primary and secondary solvers, you can ensure that if one solver fails, the next in line will attempt to solve the captcha. This layered approach increases overall success rates and minimizes downtime.
**Troubleshooting Common Captcha Solver Issues**
**1. Integration Errors**
If your captcha solver is not functioning correctly with GSA SER, first verify that the API key and settings are correctly configured. Double-check all entries for accuracy and completeness.
**2. Low Success Rates**
Low success rates can be attributed to various factors, including the type of captchas being encountered and the capabilities of your solver. Consider switching to a more advanced solver or adjusting your settings to improve performance.
**3. Slow Response Times**
Slow response times may result from server issues on the captcha solver's end or network connectivity problems. If persistent, contact the support team of your captcha solver service for assistance and consider switching to a different provider if necessary.
**Conclusion**
Effectively solving captchas in GSA SER is crucial for maximizing your SEO and link-building efforts. By understanding the role of captchas, selecting the right captcha solvers, and optimizing your settings, you can significantly improve the efficiency and success rates of your campaigns. Integrating and troubleshooting these solutions will ensure your GSA SER tool operates at peak performance, helping you achieve higher search engine rankings and better overall results.
**CaptchaAI seamlessly integrates with any software, providing a reliable automatic captcha solver that quickly handles all types of captchas. This reCaptcha solving service not only saves time but also saves money, as it offers unlimited captcha solving for a fixed price without charging per captcha. CaptchaAI stands out with its free trial, giving you a cost-free experience to try it out, making it a unique captcha solving service.**
**GSA, an SEO software for search engine ranking and marketing, requires captcha recognition. The good news is CaptchaAI is available in GSA Captcha Options. Simply open GSA, choose Options, then Captcha, select CaptchaAI, add your CaptchaAI key, set the number of times to solve the captcha, and click OK. Now, you can rely on CaptchaAI to handle all captcha trammels, including image captcha solving.**
**It's that simple: open GSA, choose Options, select Captcha, pick CaptchaAI, add your CaptchaAI key, set the captcha solving frequency, and click OK. Let CaptchaAI do the rest!**
| media_tech | |
1,865,499 | Answer: Cannot read properties of undefined (reading 'invalidatesTags') [duplicate] | answer re: Cannot read properties of... | 0 | 2024-05-26T09:36:18 | https://dev.to/hossain45/answer-cannot-read-properties-of-undefined-reading-invalidatestags-duplicate-igp | {% stackoverflow 77897380 %} | hossain45 | |
1,865,665 | #113 Python and Sentiment Analysis: Techniques and Tools | Sentiment analysis helps understand what people think and feel through their words. Python has many... | 0 | 2024-06-04T16:48:47 | https://voxstar.substack.com/p/113-python-and-sentiment-analysis | ---
title: #113 Python and Sentiment Analysis: Techniques and Tools
published: true
date: 2024-05-26 09:30:51 UTC
tags:
canonical_url: https://voxstar.substack.com/p/113-python-and-sentiment-analysis
---
Sentiment analysis helps understand what people think and feel through their words. Python has many tools for working with this kind of data. This makes it easier for people who study data or make software to figure out what customers and others are saying.
[
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### Key Takeaways:
- Python offers a wide range of libraries for sentiment analysis.
- Sentiment analysis is valuable for understanding customer feelings and thoughts.
- Sentiment analysis libraries have tools like **polarity detection** and sentiment lexicons.
- **Python libraries for sentiment analysis** include Pattern, VADER, BERT, TextBlob, spaCy, CoreNLP, scikit-learn, Polyglot, PyTorch, and Flair.
- These tools help companies make smart choices with the help of what customers and others say online.
## Pattern
Pattern is a cool Python library. It helps in many areas like natural language processing. It's great for data mining and even machine learning. Plus, it's good for network analysis and making data visual.
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One big thing Pattern does is sentiment analysis. It looks at text and figures out if it's positive or negative. For example, it sees if a review is really happy or very sad. This helps you know how personal or factual the text is too.
This makes Pattern useful in many ways. You can understand what people think from their feedback. It helps check if social media feels good or bad about something. And it's perfect for looking at reviews to see what people like or don't like.
Thanks to Pattern, businesses can learn a lot from what customers say. It can help in making choices guided by real data. This improves how companies deal with their customers.
### Key Features of Pattern
- Finding superlatives and comparatives: Pattern finds the best and worst in text. This helps know if something is very good or bad.
- Fact and opinion detection: Pattern sees if something is a fact or just someone's thought. This makes looking at data more detailed.
- **Polarity and subjectivity analysis** : Pattern measures how positive or negative something is. It also shows if it's personal or just the facts.
> Pattern has great tools for sentiment analysis. It's key for businesses to understand text data. Its power in checking if text is positive or negative is very helpful.
Patterns can really help businesses. It gives a deep look into what customers like and don't like. This can shape how businesses sell things and make customers happy.
## VADER
For checking feelings in online posts, the VADER tool is very useful. It is in the Natural Language Toolkit (NLTK). VADER stands for "Valence Aware Dictionary and sEntiment Reasoner."
It works well with things like emoticons, slang, and short forms. These are often seen on Twitter and Facebook. VADER helps know if the feeling in a text is positive, negative, or okay.
It tells you how strong the feeling is in numbers. This helps people understand the feelings in a post better. It's great for looking at what people think on social sites.
This is very helpful for businesses. They can use it to see what people are saying about them on social media. This info can help them improve and make better choices. So, _social media sentiment analysis_ is really important for companies.
Here is how VADER works, with two examples:
> "I absolutely love this product! It exceeded my expectations and I highly recommend it!"
>
> Sentiment: _Positive_
>
> "This movie was the worst! I couldn't stand the plot and the acting was terrible."
>
> Sentiment: _Negative_
VADER makes understanding feelings on social media easier. It's very good at knowing the real meaning of text. This is great for businesses, giving them important details.
## BERT
When talking about sentiment analysis, the **BERT library** is top-notch. Google made it. It uses deep learning to get language and see the different ways it's used. This makes BERT a great help for lots of NLP jobs, like sentiment analysis.
> "BERT: A **deep learning model** that revolutionizes sentiment analysis with its language understanding and data pattern recognition."
The magic of BERT is how it gets what words mean in context. This analyzes feelings more on point. BERT uses something called a transformer. It looks at the whole sentence and its meaning. That way, it's better at predicting feelings than older models that just looked at separate words.
Because BERT has trained on so much text, it understands lots of words and ways to say things. This makes it good with many different types of writing. It’s not thrown off by big chunks of text either.
BERT is easy to adjust for different jobs with its fine-tuning feature. This lets people tweak BERT to work better for the task at hand. When it's fine-tuned, BERT's predictions about feelings are right on target for that specific issue or place.
_Example:_
Sentence Sentiment Prediction "The movie was fantastic, I loved every minute of it!" Positive "I'm disappointed with the customer service I received." Negative "The product is good, but it could use some improvements." Neutral
BERT is super for figuring out how people feel in all sorts of areas. Like online shopping, checking social media, or looking at what people say about a company. It helps these places understand what customers think. Then, they can make choices that help them do better.
BERT is such a big help because it does its job well. It makes picking up on feelings more right. This shows how powerful BERT is for sentiment analysis.
## TextBlob
The _TextBlob library_ is great for feeling study with Python. It gives many features for working with written data. It helps a lot in looking into sentences, parts, or whole writings.
TextBlob is special because it sees how words feel by their _polarities_ and _subjectivities_. It checks if the text is more positive or negative. This way, it's easy to tell what the text means. The score is between -1 (very bad) and 1 (very good) for feelings. The 0 to 1 score shows how personal the text is.
If you need to understand how people feel from their words, TextBlob can help. It is good for reading what people say online or in reviews.
> TextBlob makes feeling study easy with Python. Both beginners and experts like it for its simple power.
TextBlob also does many other things with text, like telling what words do (_part-of-speech tagging_). It can also pull out key parts of texts and can even translate them. So, it's really useful for many text jobs.
It's a good start for anyone wanting to work with words or study how people feel from what they write. The way to use it and learn about it is simple and clear. It fits both new and already skilled people. Maybe you work with talks about customers, look at the web's mood, or find ideas in texts; TextBlob is a good choice.
### TextBlob Features:
- Sentiment analysis based on polarities and subjectivities
- Part-of-speech tagging
- Noun phrase extraction
- Language Translation
### Comparison Table: Sentiment Analysis Libraries
Library Features Level of Complexity Language Support TextBlob Sentiment analysis, part-of-speech tagging, noun phrase extraction, language translation Beginner-friendly 136 languages Pattern **Polarity and subjectivity analysis** , fact and opinion detection Intermediate English VADER Lexicon-based sentiment analysis, support for emoticons and slangs Intermediate English BERT **Deep learning model** , fine-tuning for sentiment analysis Advanced Multiple languages
## spaCy
The **spaCy library** is great for working with lots of text. It helps figure out how people feel about things. Many people who work with words use it because it's quick and useful.
This tool is good for understanding what texts mean. It reads feelings well from many places like emails or social media. It can tell you how folks are feeling about stuff online.
It's perfect for checking what consumers say or how social media feels about topics. Anyone can use it because it's free. It is also strong enough to study huge pieces of text.
### Key Features of spaCy:
- Efficient and high-performance text processing
- Advanced tokenization, lemmatization, and part-of-speech tagging
- Dependency parsing and named entity recognition
- **Support for multiple languages**
- Deep learning integration for enhanced accuracy
- Straightforward integration with other Python libraries and frameworks
spaCy helps a lot with understanding text and feelings. It is very good for working with many languages. And it connects well with other tools.
You can look deeply into what people are saying with spaCy. It's not hard to use, and it gives you smart results to use in your work.
Advantages of spaCy Limitations of spaCy
- **Fast and efficient** text processing
- Open-source library
- Accurate sentiment analysis
- Easy integration with other Python libraries
- **Support for multiple languages**
- Requires Python programming knowledge
- Limited availability of pre-trained models for sentiment analysis
- May require additional customization for specific use cases
- The steep learning curve for beginners
## CoreNLP
The **CoreNLP library** is great for understanding feelings. It uses Stanford NLP tools to look at language and emotions. CoreNLP has tools for checking the mood in writing, in many different languages.
CoreNLP is super because it works well with many languages. It checks how people feel in English, Arabic, German, Chinese, French, and Spanish. It helps companies understand what people from different places are saying.
You can add CoreNLP to your Python setup. It helps with checking how writing feels without a lot of work. Also, you can teach it to know emotions better, to fit your needs.
> "CoreNLP joins language and emotion checking in a smooth way. It knows many languages and has lots of features. This makes it perfect for understanding emotion from text."
With CoreNLP, you can do a lot to check people's feelings from their writing. You can find out if they are happy, sad, or feel something else. This can help understand what customers, or others, really think and feel.
Adding CoreNLP to your work can make finding deep meaning in writing easier. It's useful for understanding what people say on social media, in reviews, and other writing forms.
### Sentiment Analysis with CoreNLP: Example Code
This is how you can use CoreNLP for sentiment analysis in Python:
```
from nltk.sentiment import SentimentIntensityAnalyzer
def analyze_sentiment(text):
sid = SentimentIntensityAnalyzer()
sentiment_scores = sid.polarity_scores(text)
sentiment_category = max(sentiment_scores, key=sentiment_scores.get)
if sentiment_category == 'pos':
return 'Positive'
elif sentiment_category == 'neg':
return 'Negative'
else:
return 'Neutral'
text = "I loved the new product. It exceeded my expectations!"
sentiment = analyze_sentiment(text)
print(sentiment) # Output: Positive
```
This code uses _NLTK's SentimentIntensityAnalyzer_. It finds the feelings in the text with the help of CoreNLP. This way, it knows if the feelings are positive, negative, or something else.
Library Language Support Key Features CoreNLP English, Arabic, German, Chinese, French, Spanish, and more **Linguistic analysis** , sentiment **polarity detection** , **subjectivity analysis**
## scikit-learn
The **scikit-learn library** in Python helps with sentiment analysis using machine learning. Many experts and scientists like to use it. It has many tools and algorithms for this job.
Scikit-learn has a lot of classifiers. You can train them to tell the feelings in text right. This is great for understanding how people feel in their reviews, posts, or feedback.
It also has ways to turn text into useful numbers. These numbers show what makes the text unique. Then, the computer can understand and find feelings well. This step is very important for analyzing feelings.
This library is very flexible. It's not just for figuring out feelings. It can do many language tasks well. Like, knowing if a message is spam or finding emotions in images.
Many fields use scikit-learn, such as marketing and finance. It shows that scikit-learn is good and can be trusted.
Using scikit-learn can help a business understand what people feel. This is by looking closely at the words people use online. Then, making choices based on these insights can make customers happier.
Enjoy the benefits of scikit-learn's intelligence and feature skills in your projects. Let scikit-learn help you do great with understanding feelings in texts.
## Polyglot
Polyglot helps with sentiment analysis through Python. It's fast for many languages. This makes it great for understanding global feelings in text.
It understands sentiment in over 136 languages. For businesses worldwide, it's a key tool. It beats other NLP tools in language variety.
Polyglot is quick and accurate. It works well with big text loads. Developers save time and effort using it. They get top results in sentiment analysis.
To understand Polyglot better, let's look at an example:
> Polyglot can check feelings in feedback from many languages. It's quick in handling text, and spots feelings well. This helps understand customer opinions in different languages.
## Conclusion
Sentiment analysis helps businesses understand how customers feel. With Python, many tools make it easy for anyone to do this. These tools include Pattern, VADER, and others.
Python has tools for both new and experienced users. These tools can find the mood in customer reviews and social media. With this information, businesses can make better choices.
Python tools give important opinions from texts. They help businesses be better and know what customers like or don’t. This makes them more ready to act and meet customer wishes.
## FAQ
### What is sentiment analysis?
Sentiment analysis looks at how people feel about what they write.
### How does Python help with sentiment analysis?
Python has many libraries for sentiment analysis. These include VADER, BERT, and TextBlob.
### What is Pattern?
Pattern is a Python library. It can tell if the text is positive or negative. It also knows if a statement is true or false.
### What is VADER?
VADER is a library in Python. It is good with social media. It can tell if text is happy, sad, or okay.
### What is BERT?
BERT is a smart tool made by Google. It's good at understanding what people write. It's useful for many things in language learning.
### What is TextBlob?
TextBlob is great for beginners in Python. It helps understand feelings in what people write.
### What is spaCy?
spaCy helps with understanding many texts at once. It's quick and easy to use for bigger projects.
### What is CoreNLP?
CoreNLP can look at feelings in many languages. It uses special tools for reading emotions in text.
### What is scikit-learn?
scikit-learn is for teaching computers to understand emotions in text. It uses smart ways to learn from what is written.
### What is Polyglot?
Polyglot works with many languages in Python. It is fast and works on lots of different tasks.
### Why is sentiment analysis important?
It helps businesses understand how their customers feel. This can lead to better decisions based on what people write on the internet.
### Which Python library should I use for sentiment analysis?
It depends on what you need. There are many libraries like Pattern or VADER, each with its own good points.
## Source Links
- [https://www.unite.ai/10-best-python-libraries-for-sentiment-analysis/](https://www.unite.ai/10-best-python-libraries-for-sentiment-analysis/)
- [https://www.analyticsvidhya.com/blog/2022/07/sentiment-analysis-using-python/](https://www.analyticsvidhya.com/blog/2022/07/sentiment-analysis-using-python/)
- [https://www.bairesdev.com/blog/best-python-sentiment-analysis-libraries/](https://www.bairesdev.com/blog/best-python-sentiment-analysis-libraries/)
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1,862,676 | OpenAI Assistant with NextJS | In this blog, I will show you how to use the OpenAI Assistant with NextJS. What is the... | 0 | 2024-05-26T09:25:40 | https://dev.to/nhd2106/openai-assistant-with-nextjs-1c1n | openai, nextjs, react, tailwindcss | In this blog, I will show you how to use the OpenAI Assistant with NextJS.
## What is the OpenAI Assistant?
The OpenAI Assistant is a purpose-built AI that uses OpenAI's models and can access files, maintain persistent threads, and call tools. [Reference](https://help.openai.com/en/articles/8550641-assistants-api-v2-faq).
## Let's Get Started
### Create Your First Assistant
- Prerequisite: You need to have an OpenAI API subscription.
Go to the [OpenAI platform](https://platform.openai.com/docs/overview), and on the navigation sidebar, click on "Assistants."
On the assistant page, click "Create your assistant."
Give it a name and describe what you want your assistant to do. Remember, the more detailed your description is, the more precise the assistant's answers will be.
### Create the NextJS UI
I assume you know how to create a NextJS project. In this project, I use NextJS with [Shadcn UI](https://ui.shadcn.com/).
- Create the Chat UI
```javascript
"use client";
import CustomReactMarkdown from "@/components/CustomMarkdown";
import WithAuth from "@/components/WithAuth";
import { Button } from "@/components/ui/button";
import { Textarea } from "@/components/ui/textarea";
import { cloneDeep } from "lodash";
import { useForm } from "react-hook-form";
import {
BotIcon,
CircleSlash,
SendHorizonalIcon,
User,
Wand,
} from "lucide-react";
import { useEffect, useRef, useState } from "react";
type Message = {
text: string;
role: string;
};
function Page() {
const { register, handleSubmit, reset } = useForm();
const [chatLogs, setChatLogs] = useState<Message[]>([]);
const chatRef = useRef<HTMLDivElement>(null);
const lastMessage = chatLogs?.[chatLogs.length - 1]?.text;
const [processing, setProcessing] = useState(false);
const [isTyping, setIsTyping] = useState(false);
useEffect(() => {
if (chatRef.current) {
chatRef.current.scrollTo({
top: chatRef.current.scrollHeight,
behavior: "smooth",
});
}
}, [lastMessage]);
const onSubmit = async (data: any) => {
const prompt = data.prompt;
if (!prompt) {
return;
} else {
setProcessing(true);
setChatLogs((prev) => [
...prev,
{
text: prompt,
role: "user",
},
]);
const formdata = new FormData();
formdata.append("prompt", prompt);
reset();
const res = await fetch("/api/assistant", {
method: "POST",
body: formdata,
});
const reader = res.body?.pipeThrough(new TextDecoderStream()).getReader();
while (true) {
const val = (await reader?.read()) as {
done: boolean;
value: any;
};
if (val?.done) {
setIsTyping(false);
break;
}
if (val?.value) {
if (val?.value?.includes("in_progress")) {
setProcessing(false);
}
if (val?.value?.includes("completed")) {
setIsTyping(false);
}
let content;
const cleanedString = val?.value;
content = JSON.parse(cleanedString);
if (content?.event === "thread.message.delta") {
if (processing) {
setProcessing(false);
}
if (!isTyping) {
setIsTyping(true);
}
const text = content?.data?.delta?.content?.[0]?.text?.value ?? "";
setChatLogs((prev) => {
const newLogs = cloneDeep(prev);
const lastMessage = newLogs?.[newLogs.length - 1];
if (lastMessage?.role === "assistant") {
lastMessage.text += text;
} else {
newLogs.push({
text,
role: "assistant",
});
}
return newLogs;
});
}
}
}
}
};
return (
<div className="relative max-w-7xl mx-auto min-h-[calc(100vh-80px)]">
<h1 className="text-xl sm:text-2xl text-center mt-2 relative ">
<span className="flex items-center space-x-2 justify-center">
<span>Recipe Assistant </span>
<BotIcon color="blue" />
</span>
</h1>
<div
ref={chatRef}
className="overflow-y-auto mt-2 sm:mt-4 p-3 sm:p-8 rounded-lg no-scrollbar h-[calc(100vh-230px)]"
>
{chatLogs.map((log, index) =>
log.role === "user" ? (
<div key={index} className="relative p-2 sm:p-6">
<span className="text-gray-500">
<User
className="sm:absolute left-0 sm:-translate-x-[120%]"
size={27}
/>
</span>
<div bg-gray-50>{log.text}</div>
</div>
) : (
<div key={index} className="relative ">
<span className="text-gray-500 ">
<BotIcon
className="sm:absolute left-0 sm:-translate-x-[120%]"
size={27}
/>
</span>
<CustomReactMarkdown
content={log.text}
className="p-2 sm:p-6 bg-gray-100 my-3"
/>
</div>
)
)}
{processing && (
<div className="flex items-center space-x-2">
<span className="animate-spin ">
<CircleSlash />
</span>
</div>
)}
</div>
<div className="absolute w-full left-0 bottom-0 text-sm">
<div className="w-10/12 mx-auto sm:hidden"></div>
<form
onSubmit={handleSubmit(onSubmit)}
className="flex gap-4 w-10/12 mx-auto relative "
>
<Textarea
className="text-sm sm:text-md md:text-xl px-8 sm:px-4"
placeholder="I use the XS-10 camera. I will take pictures of a female model at 6 AM."
id="prompt"
{...register("prompt")}
onKeyDown={(e) => {
if (e.key === "Enter" && !e.shiftKey) {
e.preventDefault();
handleSubmit(onSubmit)();
}
}}
/>
<Button
size={"sm"}
variant={"link"}
type="submit"
className="absolute right-0 sm:right-3 px-1 sm:px-3 top-1/2 -translate-y-1/2"
disabled={processing || !prompt || isTyping}
>
<SendHorizonalIcon />
</Button>
</form>
</div>
</div>
);
}
```
This is my UI
### Create the API Route
First, you need to install the OpenAI package:
```sh
npm i openai
```
- The API route code example:
```javascript
import OpenAI from 'openai';
import { NextRequest, NextResponse } from 'next/server';
const openai = new OpenAI({
apiKey: process.env['OPENAI_API_KEY'],
});
export async function POST(req: NextRequest, res: NextResponse) {
const formData = (await req.formData()) as any;
const prompt = (formData.get("prompt") as string) ?? '';
const thread = await openai.beta.threads.create();
await openai.beta.threads.messages.create(
thread.id,
{
role: "user",
content: prompt,
}
);
const result = await openai.beta.threads.runs.create(thread.id, {
assistant_id: process.env['OPENAI_ASSISTANT_ID'] as string,
stream: true,
});
const response = result.toReadableStream();
return new Response(response, {
headers: {
'Content-Type': 'text/plain',
'Transfer-Encoding': 'chunked',
'Connection': 'keep-alive',
},
});
}
```
Here is my own fujifilm recipes assistant [fujifilm assistant](https://fujixfilm.com/assistant)
And that's it! Create your own assistant and make it work. If you have any questions, feel free to drop a comment below.
Thanks and happy coding!
| nhd2106 |
1,856,123 | Why I still struggle with estimates | Why? Most of my articles so far have been slightly heavy on the more technical side, this... | 27,512 | 2024-05-26T09:20:00 | https://dev.to/adaschevici/why-i-still-struggle-with-estimates-357k | agile, softwareengineering | ## Why?
Most of my articles so far have been slightly heavy on the more technical side, this is what is looking like my forté. I find writing code and solving different problems really interesting.
OFC solving problems, especially while hacking comes with a fair degree of uncertainty and frustration...when things go wrong or simply everything turns into a big ol' rabbit hole.
I am not 100% certain whether the frustration comes from not being able to finish projects or from the perceived inability to stick to a self-imposed (albeit artificial) deadline.
So this time you will be reading some of my musings about estimations and some interesting aspects that can be found in a [recent book](https://www.amazon.com/How-Big-Things-Get-Done/dp/0593239512) I read that put some things into perspective for me.
## How?
I have been trying for years to get close to delivering something on time. The bigger the project the more likely it is to veer off track.
The way you can get to near perfectly predictable timelines is if all the pieces in your project can be estimated with razor sharp precision and the way they will all fit together in the finished product.
Every part needs to be standard and should fit together like off the shelf components, not only that the different components need to fit together well at the end.
The book gives some statistics across projects of how often they are on time, on quality and budget, the number is dismally low across the projects that were analyzed in the book - **only 0.5%**.
There are some giant scale projects that have succeeded like the Empire State Building and the Guggenheim in Bilbao. The approach that seems to work well for removing the guess work is building the parts before the whole and using tried and tested solutions.
## Where does it go wrong?
In software engineering mistakes are not as irrecoverable as building a physical structure wrong, of course as the impact of software systems grows the line is more and more blurred.
You can image there may come a time when the resilience of software will become as important as that of our homes...or maybe it already is and we just are unable to wrap our heads around it.
Most project examples described are delayed because of several reasons.
- the initial assumption are vague and contain hidden complexity while sounding very simple and clear
- the finished product looks slick and polished, catches the eye, but the architectural feasibility is not assessed beforehand
- optimistic estimates
- doing something that has never been done before
- the human factor
- inexperience
- unknown unknowns
## My A-HA moment
I had not been able to formalize this, and had not come across a term that resonated with me until I read a case study in the _"How big things get done"_ by Bent Flyvbjerg and Dan Gardner.
The story refers to a newspaper columnist that engages in writing a biography. His estimate was based on his experience of writing particularly long articles. This prior experience bias is called an "anchor".
In the story the writer estimates the biography of ~17 chapters at 9 months to a year, using as an anchor estimate the fact that one long article takes 3 weeks to research and write. Needless to say this estimate was off by a factor of 7. In the end it took 7 years.
The story does have a happy end in his case however this is an outlier among the various case studies.
It turns out that anchors are a very common pattern we use for estimating how long something will take.
Typically we try to find similarities within our prior experience. The catch with software projects is that technology evolves so quickly and company/team culture is so unique that it makes anchors very much a guesstimation rule of thumb rather than a rigorous framework you might use.
There are the extrinsic aspects that change and of course there are the intrinsic goals such as writing better code, designing better architectures and products, faster development whatever motivates you.
Now, given all these things that evolve over time, what would you think the probability of your experience with something in the past would equate to your estimates being accurate for a similar project two years in the future in a different company?
One thing that works is breaking the project down into decent sized components and experiment on building the components, and make the project about putting things together.
You want to work with pretty large components, yet small enough that the experiments churn out fast. It's a balancing act but in the end solving a puzzle with 1000 pieces is much harder than one with 5.
I think Agile came out of this need for faster iteration and predictability...but in the end the probability of an estimate to be accurate to the minute is very low.
## Conclusions
- projects are a sum of experiments
- projects are an aggregate of the experiences of the participants
- boring technology is easier to estimate
- avoiding employee churn helps with estimating projects | adaschevici |
1,865,484 | Answer: How I can count how many times my component rendered in a react component | answer re: How I can count how many times... | 0 | 2024-05-26T09:08:59 | https://dev.to/hossain45/answer-how-i-can-count-how-many-times-my-component-rendered-in-a-react-component-1nmc | {% stackoverflow 78534775 %} | hossain45 | |
1,865,483 | Data handling in Next.js🍕 | Data Handling strategies Server components give you more options on how you fetch/update... | 27,133 | 2024-05-26T09:07:45 | https://dev.to/algoorgoal/benefits-of-nextjs-3l9p | nextjs | ## Data Handling strategies
Server components give you more options on how you fetch/update data since you can query the database directly in your next.js app or use REST or GraphQL to communicate with a remote API server.
### Using APIs
This is the most common way to manage data fetching. Frontend Engineers and backend Engineers decide the endpoints and communicate over HTTP(s) to send requests and responses. REST and GraphQL are the most common API architectures. If you have your backend team taking care of the database, then you will probably stick to this approach. Your backend team is free to **choose their own programming language** to build their server, and they can **scale out** in whatever way they want. This would be the most desirable approach if your server needs to **support other platforms** such as iOS, Android, MacOS, and Windows.
### Querying Database in Next.js
You can get data directly inside Server Components and update data inside Server Actions. Especially if you're using ORMs like `Prisma` or `Drizzle`, they are type safe. This means you don't need to remember the endpoint and the type of body, and you can always check the type definitions and warnings provided by their vscode extensions. One major downside is that Server Actions are not supported by other platforms, so you need to migrate all the logic in a different form. However, Expo Router lets you use Server Components in React Native, so stay up to date! We might be able to use Server Actions one day!
## Data fetching
### Using `fetch()` on the server
Next.js extends the native fetch() API if you use them inside Server Components. You can make a Server Component `async` and get the data by putting `await` syntax in front of `fetch()`. You must create a `loading.js` or use `Suspense` component if you don't want it to block other components from fetching.
### Using Route Handlers on the Client
Route handlers can be used when you don't want to expose credentials like API tokens to the client. Route handlers are cached when you use `GET` HTTP method inside them. Using `cookies()`, `headers()`, or any other HTTP methods will make them uncached.
### Data Fetching on the Client
You can fetch data on the client based on user interactions like infinite scrolling or real-time updates like messaging. Also, there might be some situations where you want to support native platforms, and you might not be able to use server components.
## Benefits of Data Fetching on the Server
### Multiple round-trips become single
If you `fetch()` multiple times with the same URL and options across a single route, Next.js stores the result of that `fetch()` the first time it runs and reuses it for the same fetch invocations. This makes multiple requests into a single one.
### Reducing Latency and Improves Performance
The distance between the client and the API server is likely longer than between the rendering server and the API server because the rendering server and the API server are mostly located at the same data center, while the client and the API server communicate over the internet. Therefore, data fetching on the server has lower latency.
#### Data fetching on the client
```
Client Rendering Server API Server
| | |
|--Request HTML-------->| |
| | |
|<--Response HTML-------| |
| | |
|--Request Data------------------------------->| (Long distance over the internet)
| | |
| | |
|<--Response Data------------------------------| (Long distance over the internet)
| | |
| | |
```
#### Data fetching on the server
```
Client Rendering Server API Server
| | |
|--Request HTML-------->| |
| |--Request Data------->| (Short distance within region)
| | |
| |<--Response Data------| (Short distance within region)
| | |
|<--Response HTML (with data)------------------|
| | |
```
**However, note that your next.js server and API server might not be to each other if you deployed them on different cloud service providers.** These cloud service providers are physically located in separate places and don't even have optimized network connections. This means the latency might not reduce, and performance doesn't improve dramatically. Let's take an extreme example. Imagine you deployed next.js on vercel and node.js server on Google Cloud. Vercel might deploy your server in Florida while Google Cloud might deploy your server in Paris. The connection between AWS and Vercel is not optimized and the distance is long, causing a lot of latency even though you fetch data on the server.
#### Fetching data on the server with a short distance
```
Client Rendering Server (CSP1 Region1) API Server (CSP1 Region1)
| | |
|--Request HTML-------->| |
| |--Request Data----------------------->|
| | |
| |<--Response Data----------------------|
|<--Response HTML (with data)----------------------------------|
| | |
```
### Fetching on the server with a long distance
```
Client Rendering Server (CSP1 Region1) API Server (CSP2 Region2)
| | |
|--Request HTML-------->| |
| | |
| |--Request Data----------------------->| (Long distance over the internet)
| | |
| |<--Response Data----------------------| (Long distance over the internet)
|<--Response HTML (with data)----------------------------------|
| | |
```
#### Keep your main thread less busy
By default, the browser uses a single thread to execute JavaScript and perform layout, reflows, and garbage collection. If event processing and painting get delayed, users are probably not happy with using our website. Data fetching on the server can help the main thread with these jobs, making our website more responsive.
- Initializing requests and processing responses
- Rendering HTML by evaluating javascript
#### Reducing Network Waterfalls
There are two types of data fetching.
- Sequential Data fetching
- Parallel data fetching
https://nextjs.org/docs/app/building-your-application/caching#opting-out-2
https://nextjs.org/docs/app/building-your-application/caching#generatestaticparams
https://developer.mozilla.org/en-US/docs/Glossary/Main_thread
https://nextjs.org/blog/security-nextjs-server-components-actions#http-apis | algoorgoal |
1,865,471 | Scan and Parse Payment QR Codes with AWS Amplify Gen 2 | This is a submission for the The AWS Amplify Fullstack TypeScript Challenge What I... | 0 | 2024-05-26T09:03:35 | https://dev.to/chucklam/scan-and-parse-payment-qr-codes-with-aws-amplify-gen-2-11gd | devchallenge, awschallenge, amplify, fullstack | *This is a submission for the [The AWS Amplify Fullstack TypeScript Challenge ](https://dev.to/challenges/awschallenge)*
## What I Built
<!-- Tell us what your app does! -->
[Ripe](https://www.ripe.money/) enables users to pay everyday merchants with crypto. Payment using QR code is ubiquitous in many parts of the world. (In the US, think Venmo.) Ripe leverages this existing payment infrastructure by connecting crypto on top of it.
I built the frontend to capture QR code using a phone's camera. It parses the QR code to extract merchant information such as name. (Right now it only supports GCash QR code in the Philippines, but more are coming.) It then asks the user the amount to send. The information is submitted to a data backend and triggers a serverless function to process the payment.
## Demo
<!-- Share a link to your deployed solution on Amplify Hosting, and include some screenshots here. -->
https://pay.ripe.money/
## Journey
<!-- Tell us about your process, the services you incorporated, what you learned, anything you are particularly proud of, what you hop to do next, etc. . -->
Even though we're only at the beginning, we have ambitious plans for this project long term. It will be very sophisticated and will require the infrastructure to fully build out a financial services company, so choosing AWS gives us that long-term option.
However, we also want to iterate quickly to get user feedback and improve the user experience, so we didn't want to spend too much time managing infrastructure. I had used Amplify gen1 before so I knew it had what we needed while also can provide integration down the line with other AWS services. When I saw Amplify gen2 and how it improved the developer experience further, it was a no brainer.
When I first started building this, Amplify Hosting gen2 didn't support custom domain yet. I knew the feature existed in gen1, so it's only a matter of time before it's available in gen2. Sure enough, before I even finished the frontend the feature was released. So now the site is reachable at https://pay.ripe.money/
Typescript support is also really useful, as I can export the correct typing to the frontend (Nextjs typescript) automatically from the schema in the data backend. The consistency is ensured automatically.
**Connected Components and/or Feature Full**
<!-- Let us know if you developed UI using Amplify connected components for UX patterns, and/or if your project includes all four features: data, authentication, serverless functions, and file storage. -->
Of the four features (data, authentication, serverless functions, and file storage), we used all of them, although authentication and file storage are used only with the development team (see below).
Payment information submitted by the user is sent to the data backend (**AppSync** and **DynamoDB**), which triggers a serverless function (**Lambda**) to process the transaction.
For the development team, they can authenticate and authorize themselves (**Cognito**) to access some hidden features. One of which is for capturing a photo of QR code that the app fails to parse. This is uploaded to file storage (**S3**) for later analysis.
<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->
<!-- Don't forget to add a cover image (if you want). -->
<!-- Thanks for participating! → | chucklam |
1,865,481 | CapCut Mod APK v12.0.0 for Android (Premium Unlocked) 2024 | Welcome to the world of CapCut, a revolutionary video editing app designed with user-friendliness and... | 0 | 2024-05-26T09:00:59 | https://dev.to/capcutappcc/capcut-mod-apk-v1200-for-android-premium-unlocked-2024-238d | Welcome to the world of CapCut, a revolutionary video editing app designed with user-friendliness and functionality in mind. Developed by Tariq Javaid, this application serves as an invaluable tool for creating and editing digital content, offering a vast array of features and benefits. CapCut APK makes it easy for everyone to transform their raw footage into polished, captivating videos.
[Download CapCut
](https://capcutapp.cc)
Additional Features of CapCut Mod APK
Unlocked All (Latest Updated)
Ad-Free Color mod
Advance Tools
Safe & Secure
Amazing songs library
New Ai Body VFX
Bug Fixes
Support Multiple Soundtracks
Easy to Use
Capcut has been recognized worldwide as one of the best video editing programs, with amazing editing features and a user-friendly interface. In addition to trimming, cutting, merging, adding music, or other editing tools, this application provides many other features that make your videos more engaging.
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Table of Contents
About CapCut Mod APK
CapCut is a video editing application developed by Bytedance for iOS and Android. This free-to-use application includes a library of sound effects, stickers and transitions that give you unique videos that would blow your mind. Its beginner-friendly editor is ideal for newcomers who want to turn their video content into professional mode without editing experience. [CapCut](https://capcutapp.cc) supports all formats from 720p to 4K.
CapCut Premium APK has built-in smart artificial intelligence and computer version technology. Its smart artificial intelligence (AI) detects faces and other important objects in videos and recommends the best filters that make video editing tasks easier and more straightforward.
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Additionally, users can add their music and voiceover to videos. CapCut also includes a video template library to make it easier for users to create their videos. Most fascinatingly, it automatically saves all videos. The user does not need to take any action. Let’s take a closer look at the most interesting part of today’s guide: features of CapCut’s new version mod APK.
General Features of CapCut Premium
This section will review some of CapCut’s general features. Besides trimming, cutting videos, adding effects, music, and transitions, there are thousands of advanced and powerful features such as a timeline editor, drag-and-drop functionality, sound effects, music, and various video effects and many more you have to know before getting started with CapCut Pro.
Easy-To-Use Video Editor with a Drag-and-Drop Interface
CapCut is designed for beginners and those who are new to video editing. Users can easily create professional-looking videos thanks to its drag-and-drop UX and UI. Without superior video editing skills, users can trim and cut their videos, add music and sound effects, adjust the speed, apply filters and effects, and add transitions between clips using CapCut. Its Drag-and-Drop Video Editor makes it easy for you to edit your videos.
Supports Multiple Video and Audio Tracks
If you want to create unique and creative projects, such as combining multiple images, text, videos, and animations, then CapCut is the ideal tool. With CapCut, you can add multiple videos, audio, sound effects, voiceovers, music tracks, and audio clips to your videos. So with the help of this fascinating feature, users can complete their complex editing tasks with just a few clicks.
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Includes a Library of Soundtracks and Sound Effects
50,000+ soundtracks and sound effects are available in the CapCut library, ranging from orchestral to cartoon sound effects. By using this professional audio, video templates and files, you can enhance the quality of your video. Thus, CapCut adds a unique flavor to users’ content and helps them create exclusive videos.
Allows You to Export Your Finished Video in Various Formats
This content creation app allows you to export your finished video in multiple formats. You can export your edited video in any format that works best for your project. Suppose you want to use your videos on social media platforms like Facebook, Instagram, Snapchat, TikTok, and Youtube. In that case, the MP4 format is the best option because most social media platforms support this format.
Has Built-In Social Media Sharing Feature
CapCut now offers a built-in social media sharing feature that allows users to share their videos directly on social media platforms like Facebook, Instagram, TikTok, etc.
capcut app ranking history
Why CapCut Mod APK?
Users want to know why CapCut Mod APK if CapCut’s original version has so many features. CapCut’s original version has millions of functionalities, but there are also some hidden drawbacks to its original version. I have been using CapCut Mod APK since 2019, so I will address a few main issues I’ve encountered using CapCut’s original version. Here are some drawbacks of CapCut that I encounter while editing my videos.
Capcut does not support videos in 4K resolution.
It cannot edit videos in an advanced manner.
It does not support 3D effects.
The app does not support subtitles or closed captions.
CapCut’s original application has a few significant drawbacks. However, CapCut Mod APK is also a good solution for those who experience these errors. Using CapCut Mod APK, you can create 4K resolution videos, edit audio with advanced features, and add 3D effects and subtitles to videos.
CapCut is a professional video editing software that offers powerful tools and features to create high-quality and engaging video content.
Features of CapCut Mod APK
With CapCut Mod APK, you get some additional features that are truly worth your time. CapCut Premium APK has the following features.
Multi-layer Editing
Multi-Layer Editing will take the quality of videos to another level. The CapCut Mod APK offers a Multi-Layer Editing feature that allows you to apply different effects and layers to your videos. Using this CapCut feature, you can easily combine several images, texts, graphics, and videos into one video. Furthermore, you can add multiple transitions, effects, and music to your video to enhance its overall quality and look.
Voice Over Recording
Those interested in working on narrations, tutorials, and other types of recordings for videos can take advantage of this feature. With voice-over recording, you can record professional-quality recordings for your videos. Moreover, you can edit audio, adjust volume, add different effects, and create perfect video audio tracks.
Chroma Key
Using the Chroma Key feature, you can edit your video’s background elements and replace them with different backgrounds. Green or Blue screen technology is working behind this feature, replacing background images and videos. You can change the background of your videos to different locations. Moreover, Users can also add visual elements to videos by using this feature.
3D effects
Whenever we scroll through social media, such as Facebook or TikTok, we notice videos containing creative effects like 3D transitions, 3D text, and 3D shapes. Videos look more dynamic and unique when they are decorated with 3D effects. You can adjust these effects using different parameters such as volume, color, size, and position.
Stickers and Texts
When it comes to creating a more visual gaming experience, stickers and text play a vital role. Videos can be enriched with tickers and titles and custom text that can enrich captions, titles, and subtitles. Additionally, you can change the text size, color, and font by using this feature.
CapCut Mod APK No Watermark
CapCut Mod APK allows users to produce high-quality video content without compromising on quality. You can make videos without the CapCut logo using this CapCut Mod APK.
CapCut Templates
According to our estimates, CapCut Mod APK has 350+ templates. All these templates are optimized, and users can use them to create videos. Video editors who are just starting can benefit greatly from CapCut templates. When you have limited time or want to edit high-quality videos without any premium editing skills, you can use the premade video or photo templates provided by CapCut. These templates are highly optimized, and you can customize them according to your interests by adding colors, text, and different effects.
No Ads
With CapCut, you can enjoy an ad-free editing experience. Users can completely focus on their tasks while editing any video without being distracted by intrusive advertisements. CapCut’s “No Ads” feature also prevents users from being exposed to potentially malicious advertisements.
CapCut Premium Plans Costs
Monthly Subscription Monthly $7.99
One-month PRO One-Time $9.99
CapCut cloud space Monthly $1.99
One- year PRO One-Time $74.99
CapCut Monthly Subscription $7.99
CapCut’s monthly subscription plan costs just $7.99 per month. This plan offers advanced features such as keyframing and masking. Various templates and other media assets are also accessible through this plan. Another major benefit of this plan is that advertisements will not affect users while editing files. You will be charged $7.99 monthly until you cancel the subscription, which is a recurring fee. Alternatively, if you prefer to pay upfront for a whole year, you can purchase an annual subscription at a discounted price.
One-Month Pro $9.99
A one-time payment of $9.99 will grant you access to all the app’s pro features for one month. After one month, your subscription will automatically expire without additional fees.
If you’d like to try out the app’s pro features without committing to a long-term subscription, this plan is a good choice. Also, it may be useful for users who need access to advanced editing tools and media assets for a specific project but don’t need it afterward.
CapCut Cloud Space $1.99
CapCut Cloud Space costs $1.99 per month, billed separately from the Premium Plan. Premium Plan subscribers can only purchase CapCut Cloud Space.
CapCut Cloud Space allows users to access CapCut Cloud and store their videos on the CapCut installed server. By doing so, users can easily access their videos from anywhere and free up their mobile storage.
One-year PRO $74.99
A one-year subscription plan is also available for CapCut. All premium features of CapCut can be accessed throughout the year for just $74.99.
ScreenShots
capcut effects and filters
capcut special features
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capcut music and sound effects
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Advantages & Drawbacks
CapCut empowers you to shape your narratives in a multitude of ways. Whether you’re a casual user looking to improve your social media content, a content creator eager to captivate your audience, or a professional seeking efficient editing tools, CapCut has you covered.
Advantages
User-friendly interface
Wide range of features
Compatibility with multiple devices
Free to use
No watermarks
Social media integration
Collaborative editing
Support for high-resolution videos
Drawbacks
Limited font options
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v12.0.0 | 246 MB
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My Review
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Frequently Asked Questions About CapCut Mod APK
Users often ask these questions, so here are a few answers they want to know.
Is CapCut Mod APK good for editing tasks?
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Final Words
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1,854,414 | DC Bat Cowls with Amplify Gen 2 Fullstack Typescript | This is a submission for the The AWS Amplify Fullstack TypeScript Challenge What I... | 0 | 2024-05-26T08:59:59 | https://dev.to/aws-builders/dc-bat-cowls-with-amplify-gen-2-fullstack-typescript-43ac | devchallenge, awschallenge, amplify, fullstack | *This is a submission for the [The AWS Amplify Fullstack TypeScript Challenge ](https://dev.to/challenges/awschallenge)*
## What I Built
I built an application that helps users find the DC Bat Cowls 🦇 trait rarity using [Amplify Gen 2 with Typescript](https://aws.amazon.com/amplify/). What a Bat Cowl is can be found [here](https://www.dc.com/blog/2022/03/29/the-bat-cowl-collection-one-epic-drop). The marketplace for them is [here](https://www.candy.com/dc/marketplace?collection=%5B%22The+Bat+Cowl+Collection%22%5D). Summary on Bat Cowls is a really cool project that has enabled me to create our own DC Comic... and created our own super villain within the DC Universe.
## Demo
You can view a Live Demo of the application here:
https://www.dcbatcowls.com
Git Repository:
https://github.com/markramrattan/dcbatcowls
<!-- Share a link to your deployed solution on Amplify Hosting, and include some screenshots here. -->
## Journey
My process (journey) involved spending the Amplify Gen 2 release week soaking up all the information each day. That was wild!🤪 (plus the 4 hour AWS Twitch stream) and an incredible insight into the BIG steps forward the AWS Amplify team is making. I could probably write 5 blogs... on all the AWS AMPLIFY updates 😂 (Yes it's capitalised for a reason aka it's AMPLIFIED...) though if you want to read what's new check out these two blogs:
https://aws.amazon.com/blogs/mobile/team-workflows-amplify/
https://aws.amazon.com/blogs/mobile/new-in-aws-amplify-integrate-with-sql-databases-oidc-saml-providers-and-the-aws-cdk/
First thing I did was do the Quickstart during the Amplify Gen 2 release week. That template gives you a fast and quick (hands-on) insight on the new features. If you want to check it out, it's [here](https://docs.amplify.aws/nextjs/start/quickstart/). I used the NextJS App Router version.
What's weird or interesting 🧐 is my own development journey has switched to NextJS and Typescript. Then this pops up... with AWS Amplify Gen 2 using a TypeScript-based, code-first developer experience (DX) for defining backends.
_The Gen 2 DX offers a unified Amplify developer experience with hosting, backend, and UI-building capabilities and a code-first approach._
I think that means... I am a **Full Stack developer... ** I remember back in the days of putting Front-end Developer on my C.V. 😆 Those days are LONG gone💨 I am enjoying this Full Stack Developer experience. A great understanding of how Amplify works is the concepts section (probably a great place to start). The page has a great overview on how to reframe your mind on what it currently is now:
https://docs.amplify.aws/nextjs/how-amplify-works/concepts/
This diagram from the page above is great to visually understand the constructs:
Ok, enough theory! 🧠 We did the reading, let's build and participate in this Amplify Gen 2 challenge. The initial Base of the project is the quickstart template. Sometimes it's better to not start from a blank canvas. Gutted it out and started working on my data models...
- How was I going to store the data?
- What would it look like?
- Would users find it beneficial being in that format?
Reflecting, I probably did it the wrong way around. I should of spent more time with users and work backwards. Though... this project is still in development and I'll continue to work on it after the challenge is done.
I really enjoyed learning about constructing the data model. I am used to Amplify Studio and doing it the visual way and this is a big change for me. I found it a better experience (code first)... which is weird (as I am a more visual person).
After spending time working out the model. I used the data manager to input the data needed. I wish there was a way to add the data in bulk (i.e.) upload this csv, reformat it and populate it in the tables (there probably is... if you know how, drop a comment or tag me). Though saying that, when the Bat Cowls get re-minted on the blockchain, i'll probably use the API to populate the data.
Connecting up the model to the Front UI was fun. I used tailwind and reverted to what I know (not always best), though I was able to quickly design it and push out something cool! 😎
Yes the different traits are clickable and it takes you to more details (rarity).
For me, this looks Cool! 😎 and built SO FAST💨 Normally it takes me at least a month to get it to this level. Instead it's increased my speed of development. I used Amazon Q with Amplify integration! That shizzle is SOO GOOD! I would say it's a 10x improvement in development speed (for me). Though lots still to learn! and excited about integrating more user benefits.
I also added a Web3 wallet from [ThirdWeb](https://thirdweb.com/) so users in the future will be able to connect their Bat Cowls to the application. Great integration and has the ability to specify wallets and restrict usage to particular blockchains.
```javascript
<ConnectButton
client={client}
wallets={wallets}
chain={defineChain(11297108109)}>
</ConnectButton>
```
I added the Data component for this project. I could easily add the other three (Authentication / Serverless Function / File Storage). However, I tried to make this about self learning and improvement aligned to building something of benefit to the user.
Going forward (continuously learning), I'll definitely be integrating more components when needed for user benefit.
Thank you for reading my blog. Feel free to check out what I've created. All feedback is welcome 😎
Editor: Dr Shivani Kochhar
Updated Data for DC Bat Cowls by [Jake](https://x.com/squawkingJAKE) & [NFTink3r](https://x.com/NFTink3r)
| markramrattan |
1,865,479 | JavaScript Tricks You Didn’t Know Existed | JavaScript is a versatile and powerful language, but even seasoned developers can be surprised by... | 0 | 2024-05-26T08:52:28 | https://dev.to/delia_code/javascript-tricks-you-didnt-know-existed-4gog | javascript, beginners, webdev, tutorial |
JavaScript is a versatile and powerful language, but even seasoned developers can be surprised by some of its lesser-known features and tricks. In this article, we'll explore a few JavaScript tricks that can make your code more elegant, efficient, and fun to write. Whether you’re a beginner or an experienced developer, these tips will help you get the most out of JavaScript in 2024.
## 1. Optional Chaining Operator (`?.`)
Have you ever encountered `undefined` or `null` errors when trying to access deeply nested properties in an object? The optional chaining operator (`?.`) can help you safely navigate these structures.
### Example
```javascript
const user = {
profile: {
name: 'Alice',
address: {
city: 'Wonderland'
}
}
};
console.log(user.profile?.address?.city); // Output: Wonderland
console.log(user.profile?.phone?.number); // Output: undefined (no error)
```
The `?.` operator checks if the property before it is `null` or `undefined`. If it is, the expression short-circuits and returns `undefined` instead of throwing an error. This is particularly useful when dealing with data from APIs or complex objects.
## 2. Nullish Coalescing Operator (`??`)
The nullish coalescing operator (`??`) is a handy tool for providing default values. Unlike the logical OR (`||`) operator, it only considers `null` and `undefined` as nullish.
### Example
```javascript
const username = null;
const displayName = username ?? 'Guest';
console.log(displayName); // Output: Guest
```
In this example, `username` is `null`, so `displayName` takes the default value 'Guest'. If `username` were an empty string or `0`, `displayName` would still be set to those values since they are not considered nullish.
## 3. Dynamic Imports
Dynamic imports allow you to load JavaScript modules on demand, which can improve performance by reducing the initial load time of your application.
### Example
```javascript
document.getElementById('loadModule').addEventListener('click', async () => {
const module = await import('./module.js');
module.doSomething();
});
```
In this example, the `import` function is called when the button is clicked. This asynchronously loads the module, which can then be used as needed. This technique is great for optimizing applications, especially when dealing with large libraries or infrequently used features.
## 4. Destructuring with Default Values
Destructuring is a powerful feature in JavaScript, and you can enhance it by providing default values.
### Example
```javascript
const user = { name: 'Bob' };
const { name, age = 30 } = user;
console.log(name); // Output: Bob
console.log(age); // Output: 30
```
In this example, the `age` property is not defined in the `user` object, so it takes the default value of `30`. This is a clean and concise way to handle default values when destructuring objects.
## 5. Short-Circuit Evaluation
Short-circuit evaluation allows you to execute code based on the truthiness of expressions using logical AND (`&&`) and OR (`||`) operators.
### Example
```javascript
const isLoggedIn = true;
const user = isLoggedIn && { name: 'Jane' };
console.log(user); // Output: { name: 'Jane' }
const isAdmin = false;
const adminName = isAdmin || 'No Admin';
console.log(adminName); // Output: No Admin
```
In the first example, `user` is only assigned the object if `isLoggedIn` is `true`. In the second example, `adminName` is assigned 'No Admin' because `isAdmin` is `false`.
## 6. Tagged Template Literals
Tagged template literals allow you to parse template literals with a function. This can be used for various purposes, such as internationalization or custom formatting.
### Example
```javascript
function highlight(strings, ...values) {
return strings.reduce((result, string, i) =>
`${result}${string}<strong>${values[i] || ''}</strong>`, '');
}
const name = 'Alice';
const city = 'Wonderland';
console.log(highlight`Hello ${name}, welcome to ${city}!`);
// Output: Hello <strong>Alice</strong>, welcome to <strong>Wonderland</strong>!
```
The `highlight` function processes the template literal, wrapping the interpolated values in `<strong>` tags. This is a powerful feature for creating custom string processing functions.
## 7. Object Property Shorthand
When creating objects, you can use the shorthand syntax to include properties whose names are the same as variables.
### Example
```javascript
const name = 'Charlie';
const age = 25;
const user = { name, age };
console.log(user); // Output: { name: 'Charlie', age: 25 }
```
Instead of writing `{ name: name, age: age }`, you can simply write `{ name, age }`. This shorthand makes your code cleaner and more concise.
## 8. Promise.allSettled
`Promise.allSettled` is a relatively new addition to JavaScript that returns a promise that resolves after all of the given promises have either resolved or rejected.
### Example
```javascript
const promises = [
Promise.resolve('Success'),
Promise.reject('Error'),
Promise.resolve('Another Success')
];
Promise.allSettled(promises).then(results => {
results.forEach(result => console.log(result.status));
});
// Output: "fulfilled", "rejected", "fulfilled"
```
`Promise.allSettled` is useful when you want to know the outcome of all promises, regardless of whether they were resolved or rejected. It provides an array of objects with the status and value or reason for each promise.
## Conclusion
JavaScript is full of hidden gems and powerful features that can make your code more elegant and efficient. By incorporating these tricks into your development workflow, you can write cleaner, more robust code. Keep exploring and experimenting with JavaScript to discover even more ways to enhance your projects!
Feel free to share your own favorite JavaScript tricks in the comments below. Happy coding! 🚀
Twitter: [@delia_code](https://x.com/delia_code)
Instagram:[@delia.codes](https://www.instagram.com/delia.codes/)
Blog: [https://delia.hashnode.dev/](https://delia.hashnode.dev/)
| delia_code |
1,865,477 | Tools and Libraries that make my my life easier as a solo developer 🔥 | Finding suitable tools for the job is crucial for your motivation and development time. I want to... | 0 | 2024-05-26T08:36:04 | https://dev.to/legationpro/tools-and-libraries-that-make-my-my-life-easier-as-a-solo-developer-3bj8 | webdev, javascript, react, backend | Finding suitable tools for the job is crucial for your motivation and development time. I want to share the following amazing suite and set of tools, libraries and resources I use daily for all of my web applications and software 🔥
**Frontend**
React Advanced Cropper (cropping images was never easier than this)
https://advanced-cropper.github.io/react-advanced-cropper/
Evergreen | Amazing set of UI components
https://evergreen.segment.com/
Mantine | Fully featured React Components library
https://mantine.dev/
Drop in solution for Tilting your components
https://www.npmjs.com/package/react-parallax-tilt
Extensive library of useful react hooks
https://usehooks.com/usewindowsize
React Wavify | create awesome 🌊 for uour next application
https://www.npmjs.com/package/react-wavify
Awesome animation library | GSAP
https://gsap.com/
Unique animation library | Anime.js
https://animejs.com/
Awesome modern react components | PrimeReact
https://primereact.org/
**SAAS | Backend**
Emailing is crucial for your application! Mailtrap is what I use to test my email services.
https://mailtrap.io/
Generous Redis free tier
https://upstash.com/
Trending GitHub repositories
https://trendshift.io/
Http port forwarding | https://ngrok.com/
I tried to include services and libraries I that are not as common as every other posts mentions them. I hope you found something new from this post, Cheers 🥂 Keep on coding 😎
| legationpro |
1,864,937 | 9 Caching Strategies for System Design Interviews | 9 Caching strategies every Software Engineers Should learn for System Design Interviews. | 0 | 2024-05-26T08:29:21 | https://dev.to/somadevtoo/9-caching-strategies-for-system-design-interviews-369g | programming, systemdesign, development, softwaredevelopment | ---
title: 9 Caching Strategies for System Design Interviews
published: true
description: 9 Caching strategies every Software Engineers Should learn for System Design Interviews.
tags: programming, systemdesign, development, softwaredevelopment
# cover_image: https://direct_url_to_image.jpg
# Use a ratio of 100:42 for best results.
# published_at: 2024-05-25 15:07 +0000
---
*Disclosure: This post includes affiliate links; I may receive compensation if you purchase products or services from the different links provided in this article.*
image_credit - [ByteByteGo](https://bit.ly/3P3eqMN)
Hello friends, In System design, efficiency and speed are paramount and in order to enhance performance and reduce response times, caching plays an important role. If you don't know what is caching? let me give you a brief overview first
**Caching is a technique that involves storing copies of frequently accessed data in a location that allows for quicker retrieval.**
For example, you can cache the most visited page of your website inside a CDN (Content Delivery Network) or similarly a trading engine can cache symbol table while processing orders.
In the past, I have shared several system design interview articles like [API Gateway vs load balancer](https://medium.com/javarevisited/difference-between-api-gateway-and-load-balancer-in-microservices-8c8b552a024), [Forward Proxy vs Reverse Proxy](https://medium.com/javarevisited/difference-between-forward-proxy-and-reverse-proxy-in-system-design-da05c1f5f6ad) as well common [System Design problem](https://medium.com/javarevisited/7-system-design-problems-to-crack-software-engineering-interviews-in-2023-13a518467c3e) and in this article we will explore the fundamentals of caching in system design and delves into different caching strategies that are essential knowledge for technical interviews.
It's also one of the [essential System design topics or concepts](https://medium.com/javarevisited/top-10-system-design-concepts-every-programmer-should-learn-54375d8557a6) for programmers to know.
By the way, if you are preparing for System design interviews and want to learn System Design in depth then you can also checkout sites like [**ByteByteGo**](https://bit.ly/3P3eqMN), [**Design Guru**](https://bit.ly/3pMiO8g), [**Exponent**](https://bit.ly/3cNF0vw), [**Educative**](https://bit.ly/3Mnh6UR) and [**Udemy**](https://bit.ly/3vFNPid) which have many great System design courses
[](https://bit.ly/3pMiO8g)
*P.S. Keep reading until the end. I have a free bonus for you.*
-----
## What is Caching in Software Design?
At its core, **caching** is a mechanism that stores copies of data in a location that can be accessed more quickly than the original source.
By keeping frequently accessed information readily available, systems can respond to user requests faster, improving overall performance and user experience.
In the context of system design, caching can occur at various levels, including:
1. **Client-Side Caching**
The client (user's device) stores copies of resources locally, such as images or scripts, to reduce the need for repeated requests to the server.
2. **Server-Side Caching**
The server stores copies of responses to requests so that it can quickly provide the same response if the same request is made again.
3. **Database Caching**
Frequently queried database results are stored in memory for faster retrieval, reducing the need to execute the same database queries repeatedly.
Here is a diagram which shows the client side and server side caching:
[](https://bit.ly/3pMiO8g)
------
## 9 Caching Strategies for System Design Interviews
Understanding different caching strategies is crucial for acing technical interviews, especially for roles that involve designing scalable and performant systems. Here are some key caching strategies to know:
### 1\. Least Recently Used (LRU)
This type of the cache is used to Removes the least recently used items first. You can easily implement this kind of cache by tracking the usage of each item and evicting the one that hasn't been used for the longest time.
If asked in interview, you can use doubly linked list to implement this kind of cache as shown in following diagram.
Though, in real world you don't need to create your own cache, you can use existing data structure like ConcurrentHashMap in Java for caching or other open source caching solution like EhCache.
------
### 2\. Most Recently Used (MRU)
In this type of cache the most recently used item is removed first. Similar to LRU cache, it requires tracking the usage of each item and evicting the one that has been used most recently.
------
### 3\. First-In-First-Out (FIFO)
This type of cache Evicts the oldest items first. If asked during interview, you can use use a queue data structure to maintain the order in which items were added to the cache.
------
### 4\. Random Replacement
This type of cache randomly selects an item for eviction. While this type of cache is simpler to implement, but may not be optimal in all scenarios.
------
### 5\. Write-Through Caching
In this type of caching, Data is written to both the cache and the underlying storage simultaneously. One advantage of this type of caching is that it ensures that the cache is always up-to-date.
On the flip side write latency is increased due to dual writes.
------
### 6\. Write-Behind Caching (Write-Back)
In this type of caching, Data is written to the cache immediately, and the update to the underlying storage is deferred.
This also reduces write latency but the risk of data loss if the system fails before updates are written to the storage.
Here is how it works:
------
### 7\. Cache-Aside (Lazy-Loading)
This means application code is responsible for loading data into the cache. It provides control over what data is cached but on the flip side it also requires additional logic to manage cache population.
-----
### Cache Invalidation
Along with caching and different caching strategies, this is another important concept which a Software engineer should be aware of.
Cache Invalidation removes or updates cache entries when the corresponding data in the underlying storage changes.
The biggest benefit of cache invalidation is that it ensures that cached data remains accurate, but at the same time it also introduces complexity in managing cache consistency.
And, here is a nice diagram from [DeisgnGuru.io](https://bit.ly/3pMiO8g) which explains various Cache Invalidation strategies for system design interviews
[](https://bit.ly/3pMiO8g)
----
### Global vs. Local Caching
In global caching, a single cache is shared across multiple instances. In local caching, each instance has its own cache. One of the advantage of Global caching is that it promotes data consistency and Local caching reduces contention and can improve performance.
------
### System Design Interviews Resources:
And, here is the curated list of best system design books, online courses, and practice websites which you can check to better prepare for System design interviews. Most of these courses also answer questions I have shared here.
1. [**DesignGuru's Grokking System Design Course**](https://bit.ly/3pMiO8g): An interactive learning platform with hands-on exercises and real-world scenarios to strengthen your system design skills.
2. [**"System Design Interview" by Alex Xu**](https://amzn.to/3nU2Mbp): This book provides an in-depth exploration of system design concepts, strategies, and interview preparation tips.
3. [**"Designing Data-Intensive Applications"**](https://amzn.to/3nXKaas) by Martin Kleppmann: A comprehensive guide that covers the principles and practices for designing scalable and reliable systems.
4. [LeetCode System Design Tag](https://leetcode.com/explore/learn/card/system-design): LeetCode is a popular platform for technical interview preparation. The System Design tag on LeetCode includes a variety of questions to practice.
5. [**"System Design Primer"**](https://bit.ly/3bSaBfC) on GitHub: A curated list of resources, including articles, books, and videos, to help you prepare for system design interviews.
6. [**Educative's System Design Cours**](https://bit.ly/3Mnh6UR)e: An interactive learning platform with hands-on exercises and real-world scenarios to strengthen your system design skills.
7. **High Scalability Blog**: A blog that features articles and case studies on the architecture of high-traffic websites and scalable systems.
8. **[YouTube Channels](https://medium.com/javarevisited/top-8-youtube-channels-for-system-design-interview-preparation-970d103ea18d)**: Check out channels like "Gaurav Sen" and "Tech Dummies" for insightful videos on system design concepts and interview preparation.
9. [**ByteByteGo**](https://bit.ly/3P3eqMN): A live book and course by Alex Xu for System design interview preparation. It contains all the content of System Design Interview book volume 1 and 2 and will be updated with volume 3 which is coming soon.
10. [**Exponent**](https://bit.ly/3cNF0vw): A specialized site for interview prep especially for FAANG companies like Amazon and Google, They also have a great system design course and many other material which can help you crack FAANG interviews.
[](https://bit.ly/3P3eqMN)
image_credit - [ByteByteGo](https://bit.ly/3P3eqMN)
### Conclusion:
That's all about caching and different types of cache a Software engineer should know. As I said, Caching is a fundamental concept in system design, and a solid understanding of caching strategies is crucial for success in technical interviews.
Whether you're optimizing for speed, minimizing latency, or ensuring data consistency, choosing the right caching strategy depends on the specific requirements of the system you're designing.
As you prepare for technical interviews, delve into these caching strategies, understand their trade-offs, and be ready to apply this knowledge to real-world scenarios.
**Bonus**
As promised, here is the bonus for you, a free book. I just found a new free book to learn Distributed System Design, you can also read it here on Microsoft --- <https://info.microsoft.com/rs/157-GQE-382/images/EN-CNTNT-eBook-DesigningDistributedSystems.pdf>
 | somadevtoo |
1,861,923 | Understanding the different CSS viewport units (dvh, svh, lvh) | Background While working on my current project, I received a request from the client... | 0 | 2024-05-26T08:23:25 | https://dev.to/roushannn/understanding-the-different-css-viewport-units-dvh-svh-lvh-9eo | webdev, beginners, css | ## Background
While working on my current project, I received a request from the client mentioning the masthead is too tall which ended up covering the content when user is viewing the pages on shorter screens.
This is an important concern as it affects accessibility for all users so we got to work on it immediately (by that I meant adding the ticket to the next sprint)!
So I changed the height of the masthead component from the original implementation of 2/3 of viewport's height to 50% of viewport's height:
```
// Old implementation
height: 66.7%;
// New implementation
height: 50vh;
```
However, when I did this change and checked it on my localhost on
both desktop and mobile view, it did not resemble 50% of the screen height. Instead, it seemed closer to 60% of viewport's height. So I decided to investigate more into this issue, and alas, I came across an article about _dynamic viewport height_.
After reading the article, I had a much better understanding on why the masthead was not appearing as I had thought it should.
## Solution 1
For regular viewport height, `100vh` would meant from the bottom of the top toolbar to the bottom of the screen while a dynamic viewport height at `100dvh` would mean the height of the content viewable not being blocked by the top and bottom toolbars as depicted in this referenced image below.
[](https://university.webflow.com/lesson/small-large-and-dynamic-viewport-units?topics=layout-design)
So I immediately went to test it out and indeed, the masthead image now appeared smaller than when i used `50vh`. However, to my horror, as I scrolled down the page, the masthead jumped. I found that this is due to the toolbar minimizing as the user scrolls down on the browser and since I'm using dynamic viewport height units, the viewable content height changes as the user scrolls. Hence, causing this unusual effect. So, I decided to explore the other viewport units.
On Safari browser, the image jumps to it's new height after scrolling as the bottom toolbar hides:
On Chrome browser, the image stretches to it's new height when scrolled as the bottom toolbar hides:
## Solution 2
There are several viewport height units available to use:
- `dvh`: Dynamic Viewport Height
- `svh`: Small Viewport Heigh
- `lvh`: Large Viewport Height
- `vh`: Viewport Height
These are also true for viewport width!
With `svh`, it refers to the bottom of top toolbar to the top of the bottom toolbar while `lvh` refers to the top of the top toolbar to the bottom of the bottom toolbar.
[](https://www.linkedin.com/pulse/understanding-dvh-lvh-svh-css-prabhath-senadheera-wmvkc/)
With this newfound understanding, I decided to go with `svh` and indeed, the jumping bug no longer exists since `svh` remains consistent and the client is also satisfied with this height improvement!
## Conclusion
In the end, deciding which viewport units to use ultimately depends on your requirements but do be careful when using `dvh` if you have any height dependent elements on your page.
This purpose of this post is to document my thought process while resolving a bug and also the research put into it. Since this is also my first post, I would love to know any feedback and points that I can improve on, thank you!
| roushannn |
1,865,473 | Converting HTML web pages into PDF | In this article, I will guide you through the straightforward process of converting HTML web pages... | 0 | 2024-05-26T08:21:21 | https://dev.to/whoakarsh/converting-html-web-pages-into-pdf-3i0b | automation, node, puppeteer | In this article, I will guide you through the straightforward process of converting HTML web pages into PDF documents using Puppeteer. This Node.js library provides a user-friendly API to control Chrome or Chromium over the DevTools Protocol.
## Prerequisites
Before I start, ensure you have Node.js and npm installed on your machine. Node.js is a JavaScript runtime built on Chrome’s V8 JavaScript engine, and npm is the package manager for the Node.js platform. If not, you can download and install Node.js from the official website (https://nodejs.org/en/download), where the Node.js package manager is included in the Node.js distribution.
You can verify the installation by running the following commands in your terminal:
```
node --version
npm --version
```
## Step 1: Initialize a new Node.js project
First, create a new directory for your project and navigate into it:
```
mkdir html-to-pdf-demo
cd html-to-pdf-demo
```
Then, initialize a new Node.js project by running:
```
npm init -y
```
This will create a new ‘package.json* file in your project directory.
## Step 2: Install Puppeteer
Next, install Puppeteer by running:
```
npm install puppeteer
```
This will download a recent version of Chromium, a headless browser that Puppeteer controls.
## Step 3: Write the script
Create a new index.js file in your project directory and open it in your text
editor. Then, paste the following code:
```
const puppeteer =
require('puppeteer');
async function printPDF() {
const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.goto (http://
marvel2950.github.io, {waitUntil:
'networkidle0'});
const pdf = await
page.pdf ({ format: 'A4' });
await browser.close();
return pdf;
}
```
```
printPDF().then (pdf => {
require('fs') .writeFileSync('output.pdf', pdf);
});
```
This script launches a new browser instance, opens a new page, navigates to [http://marvel2950.github.io](http://marvel2950.github.io), and generates a PDF. The ‘{waitUntil: ‘networkidle0’}’ option ensures that the ‘page.goto’ function waits until there are no more than 0 network connections for at least 500 ms.
## Step 4: Run the script
```
node index.js
```
And that’s it! This will create a new PDF document named ‘output.pdf’ in your project directory. This file is the result of the PDF generation process and contains the content of the HTML web page in a PDF format.
| whoakarsh |
1,864,753 | Best Delta 9 Gummies of 2024 | The demand for high-quality Delta 9 THC gummies has skyrocketed, as consumers enjoy them for better... | 0 | 2024-05-25T10:05:05 | https://dev.to/djames/best-delta-9-gummies-of-2024-f5p | webdev, javascript | The demand for high-quality Delta 9 THC gummies has skyrocketed, as consumers enjoy them for better quality sleep, or as an alternative to alcohol to relax or socialize. Edibles offer a discreet and convenient way to experience the effects of THC without the social stigma or the harshness of smoking.
Whether you're seeking a natural remedy for stress and anxiety, a potent pain reliever, or a burst of euphoria, there’s a gummy out there for every need. However, with so many options available, finding the best Delta 9 THC gummies online can be a daunting task. That's where this comprehensive guide comes in. We've scoured the internet, researching and testing countless products to bring you the cream of the crop. Our selection is based on a rigorous evaluation of each gummy's THC content, flavor profile, ingredient quality, and customer feedback.
From the moment you unwrap the gummies in our list, you'll be tantalized by their mouth-watering aroma and visually appealing presentation. As you indulge in their delightful taste and texture, you'll experience the pure, potent effects of Delta 9 THC, carefully crafted to provide a consistent and enjoyable experience. Whether you're a seasoned cannabis enthusiast or a curious newcomer, this guide will help you navigate the world of Delta 9 THC gummies with confidence and ease. Get ready to embark on a flavorful journey that will elevate your senses and enhance your overall well-being. Discover the [best Delta 9 gummies](https://tribetokes.com/delta-9-gummies/) and unlock a world of deliciousness and potency like never before.
**## Best 5 Delta 9 THC Gummies**
Before we dive into our top picks, it's essential to understand what sets an exceptional THC gummy apart from the rest. The true winners in this category are those that excel in every aspect, from the quality of ingredients to the consistency of dosing, and from the explosion of flavors to the transparency of sourcing.
A top-tier Delta 9 THC gummy should be crafted with the utmost care, using only the finest, all-natural ingredients. Each bite should deliver a precise and reliable dose of THC, ensuring that you can easily control and customize your experience. The flavors should be nothing short of extraordinary, tantalizing your taste buds with a symphony of sweet, fruity, and sometimes tangy notes that leave you craving more. Moreover, the brands behind these gummies should be committed to transparency, openly sharing information about their sourcing practices and manufacturing processes. They should prioritize customer satisfaction, ensuring that the experience they promise aligns perfectly with the reality of the product.
With these criteria in mind, we've scoured the market to bring you the absolute best Delta 9 THC gummies that have taken 2024 by storm. These gummies represent the pinnacle of cannabis edibles, setting a new standard for quality, potency, and overall enjoyment. So, without further ado, let's take a closer look at the gummies that have earned their place at the top of the game.
## **Top Pick: TribeTokes Delta 9 [THC Sleep Gummies](https://tribetokes.com/product-item/delta-9-thc-gummies-sleep/) - With CBN, Vitamin B6 and L-Tryptophan**
TribeTokes D9 Sleep Formula comes in a delicious mixed berry flavor and is also vegan. The D9 Sleep formula was created by the TribeTokes co-founder, who had struggled with insomnia. She had been consuming her own combination of cannabinoids, Vitamin B6 and L-Tryptophan supplements to help her fall asleep faster and stay asleep longer, and finally put them together into one product. She did not want to take melatonin because of its potential implications for your hormones.
CBN is a naturally sedating cannabinoid, and the relaxing effects of Delta 9 THC help to amplify its effects. Both Vitamin B6 and L-Tryptophan support the body’s own production of melatonin, preventing the need to take a melatonin supplement, which can lead to consuming way more than we need.
**## Runner Up: Coast Cranberry Pomegranate Full Spectrum**
The Coast Cranberry Pomegranate Full Spectrum gummies earn the runner-up spot with their delicious blend of flavors and balanced cannabinoid profile. The full-spectrum nature of these gummies means they contain not just THC, but also CBD, CBN, and other cannabinoids that work synergistically to promote a restful night. The cranberry-pomegranate flavor adds a tart yet sweet twist, making each gummy feel like a treat.
**## Bronze Medal: Soul Out of Office THC Gummies**
Soul Out of Office THC Gummies are the best companions for a day off that melts away your stress and an evening at home that helps you welcome the peace within. Created in the image of calm and tranquility, they use a THC and a natural terpene composition to calm and relax the body thoroughly. The sweet and sour tastes add even more to the delight, and a gummy is as good as a little holiday in itself.
**## Honorable Mention: Select Blackberry Snooze Bites**
Select Blackberry Snooze Bites make the list for their deliciously dark and juicy blackberry flavor, paired with a blend of THC and sleep-promoting ingredients. These gummies are particularly effective for those who struggle with falling asleep at first, as they create a relaxing body and mind effect. The combination of THC and additional botanicals helps users drift off comfortably, without feeling overly sedated.
**## Last But Not Least: Summit Delta-9 Gummies**
Delta-9 Gummies from Summit are aimed at taking highs to the next level. These candies are designed for people looking for a rush of excitement and satisfaction from their THC. These Summit joints are amazing for enhancing your outdoor activities or artistic endeavors, as they give a clear, focused high that helps you stay focused and active.
**Conclusion**
As we navigate the vibrant and ever-evolving landscape of Delta 9 gummies in 2024, it becomes clear that this market has truly come into its own. The sheer diversity of options available is a testament to the incredible progress made in the world of cannabis edibles. Whether you're seeking a bold and intense experience with the likes of TribeTokes’ Buzzed gummies, or a more balanced and therapeutic approach offered by brands like CBDfx, there is undoubtedly a perfect gummy out there to satisfy your unique preferences and needs. The top picks we've highlighted in this guide represent the cream of the crop, each one meticulously crafted to deliver an unparalleled experience that harmonizes potency, flavor, and overall quality. These gummies are not merely a means to an end, but rather an invitation to embark on a journey of self-discovery and enjoyment. They offer a discreet and convenient way to harness the power of Delta 9 THC, allowing you to tailor your experience to your desired outcome, whether it's relaxation, pain relief, or a burst of creativity and euphoria. In a world where stress and uncertainty often reign supreme, these gummies provide a welcome respite, a chance to live life on your own terms and embrace the moment with a sense of clarity and contentment.
So, as you explore the exciting world of Delta 9 THC gummies in 2024, do so with confidence, knowing that any of our top picks will deliver an awesome experience that will elevate your mind, body, and soul. Embrace the diversity, indulge in the potency, and let these gummies be your guide to living life to the fullest.
**FAQs
Q: Are Delta 9 THC gummies safe?**
A: Delta 9 THC gummies are generally considered safe when purchased from reputable sources that prioritize transparency and quality control. To ensure your safety, it's crucial to buy from companies that readily provide detailed information about their ingredients, sourcing practices, and third-party lab testing results. These lab tests should verify the potency and purity of the gummies, ensuring that they are free from harmful contaminants such as pesticides, heavy metals, and residual solvents. By choosing brands that adhere to strict safety standards and maintain open communication with their customers, you can enjoy Delta 9 THC gummies with peace of mind.
**Q: What is the onset time for Delta 9 THC gummies?**
A: The onset time for Delta 9 THC gummies can vary depending on several factors, including your individual metabolism, the potency of the gummy, and whether you've consumed the gummy on an empty or full stomach. On average, most people begin to feel the effects within 30 minutes to 2 hours after ingestion. However, it's important to note that the effects may be subtle at first and gradually intensify over time. If you're new to Delta 9 THC gummies, it's always best to start with a low dose and wait at least 2 hours before consuming more, as the delayed onset can sometimes catch people off guard.
**Q: Can I take Delta 9 THC gummies every day?**
A: Yes, many people choose to incorporate Delta 9 THC gummies into their daily routine, particularly those who use THC for therapeutic purposes such as managing chronic pain, reducing anxiety, or improving sleep quality. However, it's essential to approach daily use with caution and mindfulness. Start with a low dose and gradually increase it over time as you gauge your body's response and tolerance level. Be aware that regular use of Delta 9 THC can lead to increased tolerance, meaning you may need higher doses to achieve the same effects over time. It's also a good idea to periodically take tolerance breaks to help reset your system and maintain the effectiveness of the gummies.
**Q: Are there any side effects of Delta 9 THC gummies?**
A: While Delta 9 THC gummies are generally well-tolerated, some people may experience side effects, particularly when consuming higher doses or if they are sensitive to THC. Common side effects include dry mouth, dizziness, and feeling unusually tired or lethargic. In some cases, people may also experience heightened anxiety or paranoia, especially if they are prone to these feelings or consume too much THC. It's important to consume Delta 9 THC gummies responsibly, starting with a low dose and being mindful of your individual tolerance level. If you experience any adverse effects, discontinue use and consult with a healthcare professional if necessary.
**Q: How do I choose the right Delta 9 THC gummy for me?**
A: Choosing the right Delta 9 THC gummy depends on several factors, including your desired effects, potency preferences, and flavor preferences. Start by considering what you hope to achieve with the gummies, whether it's relaxation, pain relief, enhanced creativity, getting high, experiencing euphoric effects, or another benefit. Look for gummies that align with your goals and have a potency level that suits your tolerance and experience with THC. It's also important to choose a flavor that appeals to you, as this can greatly impact your overall enjoyment and satisfaction with the product. Be sure to read reviews from other customers and check for third-party lab results to ensure the quality and consistency of the gummies. By taking the time to research and compare different options, you can find the perfect Delta 9 THC gummy to suit your unique needs and preferences.
| djames |
1,865,472 | I need Help with Web API (ASP.NET .NET Framework, Entity Framework Code First, C#) | ** Difficulties and Need for support materials with Web API (ASP.NET .NET Framework, Entity... | 0 | 2024-05-26T08:15:58 | https://dev.to/kazen_wilver/i-need-help-with-web-api-aspnet-net-framework-entity-framework-code-first-c-1n0a | help, dotnet, sqlserver, backend | **
## Difficulties and Need for support materials with Web API (ASP.NET .NET Framework, Entity Framework Code First, C#)
**
I need to know how to create a web API with ASP.NET using the technologies I already mentioned.
I'm having serious difficulties finding materials and video lessons about **Web API** that use the same structure my teacher uses in class.
If possible, I would appreciate it if you could help me or send me a link to documentation, YouTube video, support material, or something that will allow me to read, understand, and put into practice, to understand the Web API well and use the structure that my teacher is using. to use. My goal is to be able to do all of this over the weekend so I can complete the project in the best way possible. **I'm using React Js** and not Angular Js.
The structure I'm referring to is in the image. Please help me, I need to understand well and learn.
You can see it in the image, but if you can't, the structure is more or less like this:
ApiCodeFirst
DAL
DTO
model
packages
Services
shared
 | kazen_wilver |
1,865,470 | My zsh config | My .zshrc file [zinit] to use it make sure u have following dependencies make sure... | 0 | 2024-05-26T08:02:55 | https://dev.to/mannu/my-zsh-config-4pop | linux, zsh, shell, ricing | ## My .zshrc file [zinit]
to use it make sure u have following dependencies
- make sure your terminal support true colours and icons. use nerd fonts for terminal
- install dependenices `git`, `zsh`, `fzf`, `zoxide`, `thefuck`
```bash
# Ubuntu or any debian based distro
sudo apt install zsh git fzf zoxide thefuck
# Arch based distro
yay -S zsh git fzf zoxide thefuck # replace yay with paru if u use paru
```
```bash
# install my .zshrc
git clone https://github.com/MannuVilasara/dotZshrc.git
cd dotZshrc
mv ~/.zshrc ~/.zshrc.bak
mv .zshrc ~/
zsh
```
The powerlevel-10k configuration will start automatically, if it doesn't type `p10k configure` to start it or reconfigure it.
Make sure to star the repo ⭐ | mannu |
1,865,462 | I introduced the word guessing game in my vocabulary app | A few years ago, I published a vocabulary-learning assistance app. Imagine you found an unknown word,... | 0 | 2024-05-26T08:02:31 | https://dev.to/emtiajium/i-introduced-the-word-guessing-game-in-my-vocabulary-app-4fof | webdev, news, showdev, postgres | A few years ago, I published a vocabulary-learning assistance app. Imagine you found an unknown word, you just googled it to find its meaning and continued what you were doing. However, what if you wanted to memorize it so that you can use it in future?
That is what my app can help. This app lets you create your own dictionary, make a vocabulary to a flashcard, and go through the process of the [Leitner System](https://en.wikipedia.org/wiki/Leitner_system) aka spaced repetition, so that you can learn it effectively. Not only this, but you can also create a group and build and learn collaboratively.
Check it out on [Android App](https://play.google.com/store/apps/details?id=com.emtiajium.firecracker.collaborative.vocab.practice) or access the [Web App](https://firecrackervocabulary.com). It is also a [Progressive Web App (PWA)](https://www.linkedin.com/posts/emtiajium_things-are-getting-too-easy-these-days-i-activity-6902285708438970368-hGnp/) i.e., it can be installed on iOS giving you a native experience.
## Exciting New Feature: Word Guessing Game!
After a few weeks of hard work, I'm thrilled to introduce a new version of the app featuring a word guessing game! In this exciting update, users are presented with a series of meanings and must guess the correct word for each one. Every day, a new game is generated to challenge vocabulary skills. With every correct guess, the score increases. Plus, if all the words are guessed correctly, an additional game can be unlocked to play on the same day.
For the tech-savvy, here are the [back-end](https://github.com/emtiajium/vocabulary-flashcard-backend/pull/16/files) and [front-end](https://github.com/emtiajium/vocabulary-flashcard-frontend/pull/9/files) pull requests.
## The Journey
The biggest challenge was to generate meanings randomly from the user-created vocabulary list. Fortunately, Postgres has a feature to select rows randomly. And guess what? I used it!
```sql
select meaning
from "Definition"
tablesample bernoulli (10);
```
I had to apply proper filtering to get meanings belonging to the user cohort. But, as using the Bernoulli sampling, Postgres generates data randomly, and I don’t want to show the last fifteen days’ meanings to the user, I needed to do a tweak.
The idea is pretty simple. Generate using the Bernoulli sampling but the final result should skip previously selected meanings. It can be easily achieved to store the current selection to a cache service, and the query needs a bit of adjustment to filter out those.
## Redis Alternative
I do not have the luxury of using Redis as you know, I wanted to avoid extra expenditure. And, Postgres rescued again!
Postgres has a concept of [UNLOGGED table](https://www.crunchydata.com/blog/postgresl-unlogged-tables), in which data is not written to WAL, long story short, kinda Redis-like feature. Therefore, I created an [UNLOGGED table](https://github.com/emtiajium/vocabulary-flashcard-backend/blob/master/migrations/1716350916749-guess-game.ts## L8) to store a user’s last fifteen days guessing game-related data.
[The final query looks like this.](https://github.com/emtiajium/vocabulary-flashcard-backend/blob/master/src/vocabulary/repositories/DefinitionRepository.ts## L31)
## Remove Old Data
If you notice [the query](https://github.com/emtiajium/vocabulary-flashcard-backend/blob/master/src/vocabulary/repositories/GuessingGameRepository.ts## L23) to fetch data from the `GuessingGame` table to feed into another query mentioned above, you will see there is no time-related filtering. It looks like if a meaning is shown to a user, it will never be displayed to that user. But, my requirement was to avoid showing only the last fifteen days.
But, it works fine. Because, I created a cron job, which runs [every hour](https://github.com/emtiajium/vocabulary-flashcard-backend/blob/master/src/vocabulary/jobs/DeleteOldRandomDefinitionsJob.ts) to [delete rows older than 15 days](https://github.com/emtiajium/vocabulary-flashcard-backend/blob/master/src/vocabulary/repositories/GuessingGameRepository.ts## L27). In this way, I ensure to keep only fifteen days of older data in the `GuessingGame` table.
## A Bit of an Extra Challenge
So far, a user gets meanings from his/her dictionary. To make the game more challenging, I fetch meaning from an external source. [WordsApi](https://www.wordsapi.com/docs/) has a cool collection of vocabulary and they have an API to fetch words randomly.
Now, every day, a user can get meanings from his own dictionary [as well as from a different source](https://github.com/emtiajium/vocabulary-flashcard-backend/blob/master/src/vocabulary/adapters/WordsApiAdapter.ts## L37), which makes it more enjoyable and challenging.
## Front-end Implementation
Well, I wrote some codes to fetch data and feed those data to the [SwiperJS](https://swiperjs.com/) so that the user can navigate to each card smoothly.
For each correct guess, a satisfactory sound gets played and a simple animation increases the count.
Despite my self-confessed lack of UI design skills, I'm proud of how these features turned out!
Here are codes to apply animation!
```css
@keyframes bounce {
0%,
20%,
50%,
80%,
100% {
transform: translateY(0);
}
40% {
transform: translateY(-30px);
}
60% {
transform: translateY(-15px);
}
}
.animate-count {
display: inline-block;
animation: bounce 1s ease-out;
}
```
```js
animateCount(index: number): void {
const element = document.getElementsByClassName('correct-count')[index];
element.classList.add('animate-count');
element.addEventListener(
'animationend',
() => {
element.classList.remove('animate-count');
},
{ once: true },
);
},
```
---
I can keep going to share every detail, but let’s finish it. I hope you will enjoy the new features! Don’t forget to leave a review in the [Play Store](https://play.google.com/store/apps/details?id=com.emtiajium.firecracker.collaborative.vocab.practice)! Happy learning!
| emtiajium |
1,865,361 | Amazon Macie to detect sensitive data from your S3 Buckets | Leaking data or sensitive information exposure can lead to many insecurities to your organization... | 0 | 2024-05-26T07:58:55 | https://dev.to/asankab/amazon-macie-to-detect-sensitive-data-from-s3-buckets-1eol | s3, security, macie, machinelearning | Leaking data or sensitive information exposure can lead to many insecurities to your organization including loss of business reputation and trust as well as long-term financially losses. Therefore, security is something we should seriously look at including applying security prevention, detection guardrails, monitoring, remediation and governance to stay on top of security of your businesses and its applications. To manage these sort of issues AWS provides a variety of security services that can be applied at different levels to safe-guard you and your customers business data while uplifting your businesses security posture.
Amazon Macie is a fully managed, ML & pattern matching service that helps with data security and data privacy concerns. Macie can provide a details list of sensitive information it can find in your S3 Buckets, so you can review them and take action. Actions can be done manually or by automating based on event using services like lambda and step functions. Automating prevent delays and human errors allowing you to act instantly to remediate or alerts on threats. Your content will be scanned based on pre-defined AWS defined rules as well as any rules you define by your own (custom rules). Macie has a native integration with AWS Organizations to allow centrally govern and perform scaled operations across your organization.
Machine can find PII (Personally Identifiable Information) such as Name, Address and contact details. National Information such as your Passports, Identities, Drivers License and Social Security Numbers), Medical Information such as Medical data, pharmacy information and even credentials and keys such as AWS Secret Keys and Private Keys etc.
That's not all, Macie can scan and detect threats related to PFI (Personal Financial Information) such as Credit Card Numbers and Bank Account Details also. Macie will scan and detect threats and present them in the form of findings via different AWS services such as Macie's Console, Macie's API's, Amazon EventBridge and Security Hub.
In order to scan and proceed with the threat detection within the data stored in your S3 Buckets, it uses a Service Linked Role to acquire necessary permission to create an inventory of all your s3 buckets, monitor, collect statistics, analyze the object and detect sensitive information. Macie also create metadata about all your S3 buckets, Usually these metadata gets refreshed every 24h as part of Macie's refresh cycle and you can also trigger it manually from the Macie's Console every 5 minutes. The metadata captures below will be use for on-going and future threat detection operations.
Macie will create a finding for each threats it detects from the moment you enabled Macie. For example, if someone disables the default encryption for a bucket, it will create a finding for you to review.
**Some of the captured metadata includes**
- Name
- ARN
- Creation Date
- Account-Level Access/Permissions
- Shared/Cross-Account Access and Replication Settings
- Object Counts etc.
During the scanning and threat detection activity Macie looks for **Unencrypted buckets, Publicly accessible bucket and Buckets shared with other accounts without an explicit allowed defined** and then analyze and collect findings for the below listed categories.
**- S3BucketPublicAccessDisabled**
**- S3BucketEncryptionDisabled**
**- S3BucketPublic**
**- S3BucketReplicatedExternally**
**- S3BucketSharedExternally**
With each finding will have a severity defined and general information about the threat including bucket name, when and how Macie was able detect the threat. These findings will be available for 90 days from the date the scan triggered and collected the information and can be viewed and explored from **Macie's Console, Macie's APIs, EventBridge and AWS Security Hub** to take necessary security precautions to mitigate the detected issues. You can also suppress findings, if you are sure that those are based on your comp policies and regulations that's in place.
<u>**Important to Note:**</u>
Your S3 Buckets could have different Server-Side/Client Side Encryptions configured and depending on the method configured for each Bucket or all the buckets as a whole, there are some implication that prevents Amazon Macie from analyzing and detecting threats from your S3 Buckets.
For instance, you could have used SSE-S3, SSE-KMS Server-Side Encryptions configured for your S3 Buckets, if that's the case then no issues Macie can scan, detect and report threats.
However, if you used CMK (_Customer Managed Keys_) for encrypting your S3 data then you have to explicitly allow Macie to use that key during the execution of the Sensitive Data discovery job which can be configured to run either one time, daily, weekly or monthly basis and collects findings, otherwise Macie will find it difficult to proceed with the Job of analyzing and detecting threats as it can not decrypt the data.
Similarly, for SSE-C (_Server-side encryption with customer provided keys_) Macie is unable to decrypt analyze and detect threats therefore Macie will just report metadata about your Buckets, same goes for any S3 Buckets configured to use Client-Side-Encryption.
Also note that Macie will not be able to Analyze and detect threats in Audio, Video, Image files for that you may have to use another service from AWS like Amazon Rekognition.
Further, It is key to keep in mind that an organization can only have a single administrator account at a given time. And an account cannot be both a Macie administrator as well as a member account.
However, If you ever wish to change the Macie administrator account then note that all member accounts will be removed. However, Macie will not be disabled from those member accounts.
A member account can only be associated with one administrator at a given time and it is unable to disassociate itself from that administrator once the member account is associated to the administrator account.
_Thank you for your time..._
| asankab |
1,865,464 | Display Flash Messages Using Laravel and Inertia | In Laravel it's common practise to after a form submit to redirect the user back to the form page and... | 0 | 2024-05-26T07:33:29 | https://paulund.co.uk/display-flash-messages-using-laravel-and-inertia | laravel, php, javascript, webdev | In Laravel it's common practise to after a form submit to redirect the user back to the form page and display a flash
message. In this tutorial we will see how to display flash messages using Laravel and Inertia.
With Laravel you will do this with some helper route methods, in your controller you will have something like this:
```php
return redirect()->back()->with('success', 'Form submitted successfully');
```
This will add a `success` key to the session with the value `Form submitted successfully`. If you're using blade file you can
then display this message like this:
```blade
@if (session('success'))
<div class="alert alert-success">
{{ session('success') }}
</div>
@endif
```
But this won't work with Inertia, because Inertia is a client-side framework and it doesn't have access to the session. So
we need to pass the flash messages to the client side.
To do this we will take advantage of the Inertia middleware `HandleInertiaRequests` this middleware is responsible for
passing the data to the client side. We will add a new key to the `share` method in the `HandleInertiaRequests` middleware
called `flash` and we will pass the session flash messages to the client side.
```php
// app/Http/Middleware/HandleInertiaRequests.php
public function share(Request $request)
{
return array_merge(parent::share($request), [
'flash' => [
'success' => $request->session()->get('success'),
'error' => $request->session()->get('error'),
],
]);
}
```
These will come through to your Vue components as page props `page.props.flash?.success` and `page.props.flash?.error`.
Now in your Vue component you can access the flash messages like this:
```vue
<template>
<div>
<div v-if="$page.props.flash.success" class="alert alert-success">
{{ $page.props.flash.success }}
</div>
<div v-if="$page.props.flash.error" class="alert alert-danger">
{{ $page.props.flash.error }}
</div>
</div>
</template>
``` | paulund |
1,865,469 | Don't Miss Top 10 Interview Questions for AWS Cloud Practitioner. | As the cloud computing landscape continues to evolve, AWS (Amazon Web Services) remains at the... | 0 | 2024-05-26T07:46:36 | https://dev.to/giasuddin90/dont-miss-top-10-interview-questions-for-aws-cloud-practitioner-1f4a | aws, cloud |
As the cloud computing landscape continues to evolve, AWS (Amazon Web Services) remains at the forefront, offering a plethora of services that businesses rely on for their operations. For those seeking to establish a career in this dynamic field, the AWS Cloud Practitioner certification is a vital stepping stone. Preparing for an interview for an AWS Cloud Practitioner role requires a solid understanding of both fundamental and nuanced aspects of AWS services. Here are the top ten interview questions that candidates might encounter, along with explanations to help you craft compelling responses.
[Prepare the AWS Certified Cloud Practitioner CLF-C02. 390 unique high-quality test questions with detailed explanations! Udemy Practice test questions.](https://www.udemy.com/course/aws-certified-cloud-practitioner-clf-c02-6-practice-exams/?referralCode=CC7E8227632717791235)
### 1. What is AWS, and what are its key services?
**Explanation:** AWS is a comprehensive and evolving cloud computing platform provided by Amazon, which includes a mixture of infrastructure as a service (IaaS), platform as a service (PaaS), and packaged software as a service (SaaS) offerings.
**Key Points to Cover:**
- AWS offers over 200 fully-featured services from data centers globally.
- Key services include Amazon EC2 (compute power), Amazon S3 (scalable storage), Amazon RDS (relational database service), and AWS Lambda (serverless computing).
### 2. Can you explain the AWS global infrastructure?
**Explanation:** Understanding the AWS global infrastructure is crucial as it relates to the availability and redundancy of AWS services.
**Key Points to Cover:**
- AWS regions and availability zones (AZs): Regions are geographic locations with multiple, isolated AZs.
- Edge locations and regional edge caches for content delivery.
- Benefits of the global infrastructure, such as low latency, fault tolerance, and high availability.
### 3. What are the benefits of using AWS over traditional data centers?
**Explanation:** Highlighting the advantages of AWS can demonstrate your understanding of why businesses are transitioning to cloud solutions.
**Key Points to Cover:**
- Cost-effectiveness: Pay-as-you-go pricing and no upfront capital expenditure.
- Scalability and elasticity: Ability to scale resources up or down based on demand.
- Flexibility and agility: Wide range of services and fast deployment times.
- Security: Robust security measures and compliance certifications.
### 4. What is the shared responsibility model in AWS?
**Explanation:** This question assesses your knowledge of security and compliance responsibilities in the AWS environment.
**Key Points to Cover:**
- AWS is responsible for security "of" the cloud (hardware, software, networking, and facilities).
- Customers are responsible for security "in" the cloud (data, identity and access management, applications, and operating systems).
[Prepare the AWS Certified Cloud Practitioner CLF-C02. 390 unique high-quality test questions with detailed explanations! Udemy Practice test questions.](https://www.udemy.com/course/aws-certified-cloud-practitioner-clf-c02-6-practice-exams/?referralCode=CC7E8227632717791235)
### 5. How does Amazon S3 ensure data durability and availability?
**Explanation:** Amazon S3 is a critical service, and understanding its mechanisms for data protection is essential.
**Key Points to Cover:**
- S3 provides 99.999999999% (11 nines) durability by redundantly storing objects on multiple devices across multiple facilities.
- S3 standard storage class offers 99.99% availability.
- Additional features like versioning, cross-region replication, and lifecycle policies.
### 6. What is AWS IAM, and why is it important?
**Explanation:** AWS Identity and Access Management (IAM) is a foundational security service.
**Key Points to Cover:**
- IAM allows you to control access to AWS services and resources securely.
- Key features include users, groups, roles, and policies.
- The principle of least privilege: granting only the permissions necessary to perform a task.
### 7. Can you describe an Amazon VPC and its components?
**Explanation:** Amazon Virtual Private Cloud (VPC) is fundamental to networking in AWS.
**Key Points to Cover:**
- VPC allows you to launch AWS resources in a logically isolated virtual network.
- Key components include subnets, route tables, internet gateways, NAT gateways, and security groups.
- Benefits such as control over the network environment, including IP address range, subnets, and route tables.
### 8. What is AWS Lambda, and how does it differ from traditional computing?
**Explanation:** AWS Lambda represents the shift towards serverless computing.
**Key Points to Cover:**
- Lambda allows you to run code without provisioning or managing servers.
- Pay only for the compute time consumed.
- Automatically scales from a few requests per day to thousands per second.
- Differences from traditional computing: no need to manage infrastructure, focus on writing code.
[Prepare the AWS Certified Cloud Practitioner CLF-C02. 390 unique high-quality test questions with detailed explanations! Udemy Practice test questions.](https://www.udemy.com/course/aws-certified-cloud-practitioner-clf-c02-6-practice-exams/?referralCode=CC7E8227632717791235)
### 9. How can you secure data in transit and at rest in AWS?
**Explanation:** Ensuring data security is paramount in cloud environments.
**Key Points to Cover:**
- Data in transit: Use encryption protocols such as SSL/TLS, and AWS services like AWS VPN and AWS Direct Connect.
- Data at rest: Use encryption services such as AWS Key Management Service (KMS) and S3 server-side encryption.
- Additional security features: IAM roles, security groups, and network ACLs.
### 10. What is the significance of the Well-Architected Framework?
**Explanation:** The AWS Well-Architected Framework helps you understand best practices for designing and operating reliable, secure, efficient, and cost-effective systems in the cloud.
**Key Points to Cover:**
- Five pillars: Operational Excellence, Security, Reliability, Performance Efficiency, and Cost Optimization.
- Use of Well-Architected Tool for continuous improvement and adherence to best practices.
- Regular reviews and iterative improvements based on the framework.
[Prepare the AWS Certified Cloud Practitioner CLF-C02. 390 unique high-quality test questions with detailed explanations! Udemy Practice test questions.](https://www.udemy.com/course/aws-certified-cloud-practitioner-clf-c02-6-practice-exams/?referralCode=CC7E8227632717791235)
### Conclusion
Preparing for an AWS Cloud Practitioner interview involves more than just memorizing facts; it requires a deep understanding of AWS services, their applications, and best practices. By thoroughly understanding these ten questions and their underlying concepts, you'll be well-equipped to demonstrate your knowledge and readiness to potential employers. Whether you are a novice or looking to reinforce your skills, focusing on these areas will provide a solid foundation for your AWS journey. | giasuddin90 |
1,865,419 | How to Simplify Your Code with TypeScript Discriminated Union Types | Introduction This will be my first time writing about TS. There are multiple tutorials out... | 0 | 2024-05-26T07:40:45 | https://dev.to/keyurparalkar/make-your-life-easy-with-discriminated-union-types-2moi | typescript, redux, react, webdev | ## Introduction
This will be my first time writing about TS. There are multiple tutorials out there which explain the concept of discriminated unions in an outstanding way. But I will I try my best to explain here my understanding about the concept and how I approached it.
In this blogpost, we are going to learn about discriminated union types. We will also look at how it is an excellent concept that makes developer’s life less miserable. You will also get to see some realtime examples.
## What are discriminated Union Types?
Let me be a good dev and explain this concept by explaining the problem and then the solution.
**Problem Statement**
An interface or a type can represent multiple states. And based on these states the other properties in the interface can differ. For example,
- A network response has the following structure
```json
// For successful request
{
"status": '200',
"payload": {...}
}
// For failure in request
{
"status": '400',
"error": {...}
}
```
As you can see, based on the `status` property the rest/some of the properties might be present or may note be present.
- A general shape interface can have multiple properties that might not be present in all the shapes:
```json
{
"type": 'Circle',
"radius": 50
}
{
"type": 'Square',
"sideLength": 10
}
```
Now their interfaces will look something like below:
{% embed https://codesandbox.io/embed/g7j84t?view=editor&module=%2Findex.ts %}
Now suppose for the Response interface we want to write a utility function that logs the response in different format like below:
{% embed https://codesandbox.io/embed/vgx3kz?view=editor&module=%2Findex.ts %}
Both of these blocks will have access to the `successPayload` and `errorPayload` i.e. we know that type `200` means a successful request and we want only to get successPayload and nothing else. Similar is the case for the type `400`
The mental model for the types we have is a mapping of status state i.e. `type` value with the rest of the parameters.
As you can see this is a very common problem that all the developers face. To resolve this and tell typescript to distinguish between different values of types we need to make use of Discriminated union types of typescript.
### Discriminated Union Types
This is a nice little feature that Typescript provides that helps the TS itself to distinguish between which rest of the parameters to choose based on a common property between them. Let us restructure our above example of NetworkResponse interface:
{% embed https://codesandbox.io/embed/yg9sls?view=editor&module=%2Findex.ts %}
Now if we try use the `displayNetworkResponse` function we won’t get any type errors.
{% embed https://codesandbox.io/embed/vljmcs?view=editor&module=%2Findex.ts %}
## Realtime Use case
I have always faced this issue while using the React’s Context APIs where I have my actions ready with me and each and every action would have a different `payload` property. But when I am building my reducer function I don’t get the narrowed typing based on the action case I am in inside the switch case. Let me demonstrate this with an example.
Suppose you have these set of actions with you:
{% embed https://codesandbox.io/embed/353862?view=editor&module=%2Fsrc%2Fstore%2Factions.ts %}
These are simple actions like adding and removing a TODO from a list
Next, we define the action creators or the functions that dispatch the action like below:
```tsx
import { ACTIONS } from "./actions";
export const addTodo = (id: number, text: string) =>
({
type: ACTIONS.ADD_TODO,
payload: {
id,
text,
},
});
export const removeTodo = (id: number) =>
({
type: ACTIONS.REMOVE_TODO,
payload: {
id,
},
});
```
As we see here the `payload` attribute of both the actions is different. For `ADD_TODO` action the payload attribute consists of `id` and `text` and for `REMOVE_TODO` action we just pass an `id` attribute.
Now let us define our reducer function like below:
```tsx
import { ACTIONS } from "./actions";
export const reducer = (state, action) => {
switch (action.type) {
case ACTIONS.ADD_TODO: {
const { payload } = action;
payload.text;
}
case ACTIONS.REMOVE_TODO: {
const { payload } = action;
payload.id;
}
}
};
```
In both the action cases TS is not able to decide the types for the payload. It will display typings as follows:
```tsx
const payload: {
id: number;
text: string;
} | {
id: number;
}
```
But this is not what we want. We expect that when the `ADD_TODO` action is being used as the `payload` attribute then it should consists of `id` and `text` attribute and for `REMOVE_TODO` we expect that it should consists of only the `id` attribute. How can typescript know this mapping? Discriminated Union Types to the rescue.
We need to return the `ActionTypes` type from the actions file like below:
{% embed https://codesandbox.io/embed/353862?view=editor&module=%2Fsrc%2Fstore%2FactionCreators.ts %}
`ActionTypes` here is a type that will be a union of return type of `addTodo` and `removeTodo` function. Here the common property to discriminated will be the `type` property in both function’s return type. Now making use of this type inside the `reducer` function like below, helps us to achieve what we wanted:
{% embed https://codesandbox.io/embed/353862?view=editor&module=%2Fsrc%2Fstore%2Freducers.ts %}
Now if you check the payload attribute in each section then we are able to see that payload types are getting changed based on the action type.
So this is the magic of Discriminated Union Types.
## Summary
I feel discriminated union type is the most underrated feature for typescript. I believe every developer should use it to have better type narrowing that will help to write better and predictable code.
Thanks a lot for reading my blogpost.
You can follow me on [twitter](https://twitter.com/keurplkar), [github](http://github.com/keyurparalkar), and [linkedIn](https://www.linkedin.com/in/keyur-paralkar-494415107/). | keyurparalkar |
1,865,467 | The Evolution of Sports Broadcasting: From Radio Waves to Digital Streams | The landscape of sports broadcasting has undergone remarkable transformations since its inception.... | 0 | 2024-05-26T07:39:52 | https://dev.to/sebastian_jones_6c81ba19a/the-evolution-of-sports-broadcasting-from-radio-waves-to-digital-streams-1fn4 |
The landscape of sports broadcasting has undergone remarkable transformations since its inception. From the early days of radio commentary to the sophisticated digital streaming services of today, the journey of sports broadcasting reflects broader technological advancements and changing consumer preferences. This article delves into the evolution of sports broadcasting, highlighting key milestones and future trends shaping the industry.
**The Birth of Sports Broadcasting: The Radio Era
**The history of sports broadcasting can be traced back to the early 20th century with the advent of radio. The first notable sports broadcast occurred in 1921 when Pittsburgh's KDKA station aired a live boxing match between Johnny Dundee and Johnny Ray. This broadcast captured the public's imagination, marking the beginning of a new era where fans could experience the thrill of live sports from their homes.
Radio broadcasts soon became a staple for sports enthusiasts. Iconic moments, such as the legendary broadcasts of baseball games by announcers like Red Barber and Mel Allen, captivated audiences. The intimate, play-by-play commentary offered listeners a vivid portrayal of the action, fostering a deep emotional connection to their favorite sports <a href="https://lctv2019.com/">스포츠무료중계</a>.
**Television Takes the Baton
**The transition from radio to television in the mid-20th century revolutionized sports broadcasting. Television brought sports to life with visual excitement, allowing fans to witness the action in real-time. The 1936 Berlin Olympics were the first games to be broadcast on television, albeit to a limited audience. However, it wasn't until the 1950s that television became a mainstream medium for sports.
The 1958 NFL Championship Game, often referred to as "The Greatest Game Ever Played," was a pivotal moment in sports television. The game's dramatic conclusion captivated millions of viewers, showcasing the power of television to bring sports into the living room. This era also saw the rise of legendary sportscasters such as Howard Cosell and Vin Scully, whose voices became synonymous with the sports they covered.
**The Cable Revolution and ESPN's Emergence**
The late 20th century brought another significant shift with the rise of cable television. The launch of ESPN in 1979 marked a new chapter in sports broadcasting, providing 24-hour sports coverage. ESPN's innovative approach, including SportsCenter's highlights and analysis, redefined how sports were consumed. The network's success spurred the creation of numerous sports channels, offering specialized content for diverse audiences.
Cable networks also facilitated the rise of regional sports networks (RSNs), allowing fans to follow local teams more closely. This era saw the introduction of pay-per-view and premium sports packages, giving fans unprecedented access to live events and exclusive content.
**The Digital Age: Streaming and Beyond
**The 21st century has witnessed the digital transformation of sports broadcasting. The proliferation of the internet and mobile devices has reshaped how fans engage with sports. Streaming services like Netflix, Amazon Prime, and dedicated sports platforms like DAZN and ESPN+ offer on-demand access to live events and extensive libraries of sports content.
Social media platforms have also become integral to sports broadcasting, providing real-time updates, highlights, and interactive experiences. Platforms like Twitter, Instagram, and YouTube have enabled fans to engage with their favorite sports and athletes directly. This digital shift has democratized sports broadcasting, allowing fans from around the world to access content anytime, anywhere.
**Technological Innovations Enhancing Fan Experience**
Technological advancements continue to enhance the sports broadcasting experience. High-definition (HD) and ultra-high-definition (UHD) broadcasts provide viewers with unparalleled clarity. Virtual reality (VR) and augmented reality (AR) technologies offer immersive experiences, allowing fans to feel as if they are part of the action.
Artificial intelligence (AI) and machine learning are also transforming sports broadcasting. AI-driven analytics provide real-time insights and personalized content recommendations. Automated camera systems and AI-powered commentary enhance production quality, ensuring a seamless viewing experience.
**The Future of Sports Broadcasting
**The future of sports broadcasting is poised to be even more dynamic and interactive. The integration of 5G technology promises faster and more reliable streaming, enabling high-quality broadcasts on mobile devices. Interactive features, such as real-time statistics, multi-angle views, and fan polls, will further enhance engagement.
Esports, or competitive gaming, is also emerging as a significant player in the sports broadcasting arena. With a growing global audience, esports broadcasts are becoming increasingly sophisticated, rivaling traditional sports in production quality and fan engagement.
**Conclusion**
The evolution of sports broadcasting from radio waves to digital streams reflects a broader narrative of technological advancement and changing consumer behavior. As the industry continues to innovate, the ways in which fans experience and engage with sports will undoubtedly become more immersive and interactive. The future of sports broadcasting holds exciting possibilities, promising to bring fans closer to the action than ever before. | sebastian_jones_6c81ba19a | |
1,865,466 | Which Floor is Best in High Rise Apartments in India? 5 Powerful Tips | Introduction: In the bustling urban landscape of India, high-rise apartments have become synonymous... | 0 | 2024-05-26T07:37:05 | https://dev.to/utpal_paul_6416bbb6fca401/which-floor-is-best-in-high-rise-apartments-in-india-5-powerful-tips-ho9 | high, rise, apartment, india | Introduction: In the bustling urban landscape of India, high-rise apartments have become synonymous with modern living. With soaring towers dotting the skyline, the decision of which floor to live on is pivotal. Are the top floors superior for their panoramic views, or do the lower floors offer better convenience and accessibility? Prospective residents often ponder these questions when choosing a floor in high-rise apartments in Bangalore or other Indian cities.
To make an informed decision, it’s crucial to consider factors such as accessibility, views, noise levels, and lifestyle preferences. By examining these aspects closely and consulting with experts, individuals can enhance their high-rise living experience.
Let's explore the advantages of different floor levels and gain valuable insights into which floor might be the best fit for you in high-rise apartments across India.
Advantages of High-Rise Apartments: Before diving into the specifics of each floor, it’s important to understand the overarching advantages of high-rise apartments. Firstly, high-rise buildings optimize land use, allowing for denser urban development and conserving valuable space. This efficiency is particularly vital in densely populated cities like Bangalore. Secondly, they offer unparalleled views of the cityscape, often accompanied by breathtaking sunsets and sunrises, enhancing the overall living experience. Thirdly, high-rise living fosters a sense of community, with shared amenities and social spaces that encourage interaction among residents, promoting a vibrant and dynamic lifestyle.
Which Floor Is Best in High-Rise Apartments in India? Ground to Mid-Level Floors: Accessibility and Convenience: The ground to mid-level floors, typically encompassing levels one to ten, offer unparalleled convenience. These floors are easily accessible via elevators and emergency staircases, making them ideal for individuals with mobility concerns or those who prefer quick access to amenities such as gyms, swimming pools, or parking facilities.
Noise Levels: One consideration for these floors is the potential for noise pollution from street traffic or nearby amenities. However, modern soundproofing techniques in high-rise construction largely mitigate this concern, ensuring a peaceful living environment.
Views and Natural Light: While the views from lower floors may not match those of higher floors, they often overlook lush greenery or landscaped gardens within the apartment complex. Additionally, lower floors benefit from ample natural light, creating a bright and inviting living space conducive to relaxation and productivity.
Mid to High-Level Floors: Elevated Views: As we ascend to the mid to high-level floors, spanning approximately levels ten to twenty, the views become increasingly panoramic. Residents on these floors enjoy sweeping vistas of the city skyline, iconic landmarks, and expansive horizons, creating a sense of awe and wonder.
Privacy and Serenity: Away from the hustle and bustle of street-level activity, mid to high-level floors offer heightened privacy and serenity. Ambient noise diminishes, creating a tranquil environment conducive to relaxation, concentration, and introspection.
Ventilation and Air Quality: Another advantage of mid to high-level living is improved ventilation and air quality. Elevated above ground-level pollutants such as dust, smoke, and vehicular emissions, residents on these floors benefit from fresher air and enhanced respiratory health, promoting overall well-being and comfort.
Top Floors: Prestige and Exclusivity: The top floors of high-rise apartments, typically above level twenty, exude an aura of prestige and exclusivity. These coveted residences are often associated with luxury amenities, premium finishes, and unparalleled panoramic views, catering to discerning individuals seeking the epitome of high-rise living.
Uninterrupted Views: From the top floors, residents are treated to unobstructed views stretching as far as the eye can see. Whether it’s the glittering city lights at night or the ethereal beauty of sunrise and sunset, the vistas from these heights offer a sense of tranquility and escape from the hustle and bustle below.
Noise Considerations: While top floors offer unparalleled views, they may also be more susceptible to strong winds and atmospheric disturbances, potentially causing discomfort or inconvenience. Additionally, residents on these floors may experience occasional elevator wait times during peak hours, necessitating patience and flexibility.
Expert Insights: To gain further clarity, we consulted renowned architect Dr. Ananya Sharma, who shared valuable insights into the dynamics of high-rise living in India. According to Dr. Sharma, “The choice of [which floor to choose in high-rise apartments](https://proptimes.org/which-floor-is-best-in-high-rise-apartments-in-india/) depends on individual preferences and lifestyle requirements. While top floors offer unmatched views, they may not be suitable for residents with vertigo or a fear of heights. Conversely, ground to mid-level floors offer convenience and accessibility, making them ideal for families with young children or elderly members. Ultimately, it’s essential to weigh the pros and cons of each floor level and prioritize factors such as accessibility, views, privacy, and lifestyle preferences.”
Conclusion: In conclusion, the question of which floor is best in high-rise apartments in India is multifaceted and subjective. Ground to mid-level floors offer convenience and accessibility, while mid to high-level floors provide elevated views and serenity. Meanwhile, top floors boast prestige and exclusivity, along with uninterrupted panoramas of the cityscape. Ultimately, the ideal floor choice depends on individual priorities, lifestyle preferences, and budget considerations.
By weighing the advantages of each floor level and consulting with experts, prospective residents can make informed decisions to enhance their high-rise living experience in India, ensuring a harmonious blend of comfort, convenience, and luxury in the vertical urban landscape. With upcoming high-rise apartments in Bangalore and other major cities, the choices for discerning residents are expanding. Staying informed about the latest developments and advancements in high-rise living is essential.
In summary, whether you prioritize convenience, breathtaking views, or exclusivity, the key is to evaluate your requirements and match them with the offerings of each floor level. By doing so, you can ensure that your high-rise apartment becomes not just a place to live but a sanctuary that complements your lifestyle and aspirations. As you embark on your journey to find the perfect high-rise abode, consider all aspects carefully and make a choice that resonates with your vision of urban living in India. | utpal_paul_6416bbb6fca401 |
1,865,465 | Custom WordPress Website Development Cost & Benefits 2024 | Custom WordPress Development can give you the solutions that premade templates cannot. They can offer... | 0 | 2024-05-26T07:33:58 | https://dev.to/starlitdevs_/custom-wordpress-website-development-cost-benefits-2024-2opf | webdev, wordpress, php | [Custom WordPress Development](https://starlitdevs.com/custom-wordpress-website-development/) can give you the solutions that premade templates cannot. They can offer what you need for your business or brand. You should know “before making any business decision over 85% of B2B clients will look at your brandable website design. Custom WordPress sites are not only for custom and unique designs, they are also built with advanced SEO in mind so from the start you are boosting your website SEO by more than 50%.
On average a custom-developed WordPress site potentially saves up to 30-35% annually on maintenance costs. Also for the security management wordpress is the best choice against cyber threats. Do not get confused with “Custom WordPress theme development” and “Custom-made WordPress development”.
Taking a custom WordPress development service from Starlitdevs helps you develop a unique brand website.
Are you a co-founder, a startup founder, or an entrepreneur? Do you have a question about how to make a custom WordPress website?
If Yes, then we will discuss the following terms.
What is custom WordPress development?
7 Benefits of using a custom WordPress site?
How to develop a Custom WordPress Website?
Who is your developer to design a custom WordPress site?
What challenges do you face to develop a custom WordPress website?
How much does it cost to develop a custom WordPress website?
Where and How to find reliable WordPress developers?
**What Is Custom WordPress Website Development?**
Custom WordPress development means developing a website from scratch or heavily customized as per brand needs by keeping in mind unique design, UI, UX, functionality, security, and many more. This is not like building a website with full-stack coding.
This comes with Low-code concepts. So no more heavy server requests for extra plugins, and features. Although using page builders like Elementor, Divi, and other similar tools provides a user-friendly interface for nontech designers.
When designing a website for your company you might think about a pre-made template from WordPress library or any page builders. However, this is not a unique process for your creativity or showcasing your brand.
Giant companies like Techcrunch, BBC America, CNN, and Time magazine, we can see they are using CMS like WordPress but not from the free library or premade templates. They are custom WordPress-developed websites. They need a complex design for their company which is not achievable with general WordPress templates.
**Difference Between WordPress.com and WordPress.org?**
The hosting system is the main difference between them. Where WordPress.com provides hosting solutions and WordPress.org is self-hosted and provides information, and resources to the community.
**What Is WordPress.com?**
A web hosting service created by Automattic was founded by Matt Mullenweg. One of the original developers of the WordPress open-source CMS. Offer a range of hosting plans as per user needs. Providing technical support like security, backups, updates, and anti-threat against viruses also gives SEO tools according to the plan. The Walt Disney Company is a great example built with WordPress.com
**What Is WordPress.org?**
It is a software by itself. Matt Mullenweg and Mike Little were co-founded in 2003 as a fork of b2/cafelog. You can build and maintain a website with it where you have to buy the Domain name independently. Pre-made template and architecture users can create web applications with its open-source free content management system. This core software can be installed on any web server which supports PHP MySQL or MariaDB.
WordPress.org is maintained and developed by a huge community of thousands of volunteers around the world.
Expert Suggestion:
For custom WordPress development WordPress.org is the ideal choice. It offers full control over the domain names, hosting options also for customizations. Users can have top-notch maintenance and security, control for complex custom projects. Where WordPress.com is suitable for simple projects.
**What Are The Benefits Of Custom WordPress Website Development?**
Before going to use it you need to know WordPress is the most popular and growing CMS with a 62.8% share of the global CMS market. In May 2024 (Update Report), almost 43.4% of global websites are powered with WordPress over 30000 themes are available in the library. Let’s break down the benefits;
Benefit 1: Customized Security
With world-class level cybersecurity, researchers and lead developers are at the core of this system for custom WordPress sites. You can enhance more security by following such steps:
Adding captchas to block bot attacks.
Install security plugins to regularly scan for malware.
Add Two-Factor Authentication (2FA) and limit login attempts.
Use SSL to safeguard user data during connection to your site.
Benefit 2: Extensive Customization
The main target of using custom WordPress development is to use custom features which allow users to develop custom functions and data as per business needs. Of course, this is technical and fits with the customer’s requirements.
Benefit 3: Easy To Maintain
It’s using WordPress core that’s why most of the backend maintenance work. An in-house developer needs to download the updates regularly. This is also a budget-friendly solution for the business owners. Where an e-commerce website owner needs to spend a minimum 3750-4000$ per month on maintenance and coding for the design. While a custom WordPress development costs nearly about 1200-1500$ per month. The price is not definite it varies with needs and support.
Benefit 4: SEO Comfort & Compatibility
Custom WordPress Websites are built with streamlined code. Because it doesn’t have extra unnecessary codes to load on the server, that’s why fast load speed, and easier to index on search engines also improve the site’s performance. In short,
Good navigation.
Well-structured sitemap.
Schema for a better understanding of the website.
Best page load speed.
As I early said earlier, custom WordPress design starts with advanced SEO integration. Like optimal use of meta tags, website headers, also alt attributes are perfectly aligned with the target keywords & proper content strategy.
Benefit 5: Fast Building Time
A fundamental coding website needs a minimum of 350-450 development hours to build from scratch. But if you need to do any updates it requires complex work and also increases the work hours as well. Whereas a suitable framework like WordPress which doesn’t have a backend to edit, with custom requirements, only needs 100 or fewer hours to build.
Benefit 6: Flexibility
For your business, you need to customize anything anytime but for a coding website is not a cup of water to play with, for a custom WordPress website development is so easy to work anytime with only less work. | starlitdevs_ |
1,865,359 | Running Redis with Docker | Redis is an open-source, in-memory data structure store that brings high performance to your... | 0 | 2024-05-26T07:30:07 | https://dev.to/itskunal/running-redis-with-docker-323p | redis, docker, database, beginners | Redis is an open-source, in-memory data structure store that brings high performance to your applications. Imagine needing to store data for quick retrievals, like shopping cart contents in an e-commerce app. Redis is perfect for this task, acting as a super-fast cache or even a database for specific use cases.
## Redis Functionalities
- **Data Structures**: Redis offers flexibility by supporting various data structures like strings, lists, sets, and sorted sets. You can choose the most efficient structure for your data type.
- **Blazing Speed**: In-memory storage makes Redis extremely fast for data access, ideal for real-time applications and caching frequently used data.
Optional Persistence: While primarily working with in-memory data, Redis allows you to persist data to disk for recovery after restarts using snapshots or append-only files (AOF).
- **Publish/Subscribe Messaging**: Redis can act as a message broker, enabling applications to communicate with each other using a publish-subscribe pattern.
## Prerequisites
- Docker
## Why Dockerize Your Redis?
While traditional Redis installation gets the job done, Docker offers a compelling alternative for running Redis, especially in development environments. Here's why you should consider the Docker approach:
- **Isolation and Consistency**: Docker creates a self-contained environment for Redis, isolating it from your system dependencies. This prevents conflicts and ensures a consistent Redis experience across different development machines, regardless of the underlying operating system.
- **Effortless Setup and Teardown**: Forget complex installation steps! Docker allows you to pull a pre-built Redis image and launch it with a single command. Similarly, removing a Redis instance is as easy as stopping and deleting the container. This streamlines your development workflow.
- **Version Control Made Easy**: Docker excels at managing different versions of software. You can easily switch between Redis versions by pulling the desired image, enabling you to test compatibility and experiment with different functionalities.
- **Improved Portability with Docker Volumes**: Docker volumes are directories on your host machine that persist data outside of containers. By mounting a volume to your Redis container's data directory, you can ensure your data survives container restarts and even transfers between machines. This makes your Redis setup truly portable.
- **Run Different Databases with Different Versions**: Docker excels at managing isolated environments. You can run multiple database containers, each with a different version of the software (e.g., MySQL 8 and PostgreSQL 14) on the same machine. Docker ensures each container operates independently, preventing conflicts between database versions or configurations.
- **Clean Development Environment**: By keeping Redis (and potentially other databases) within containers, you avoid cluttering your local system with their dependencies. This maintains a clean development environment and simplifies troubleshooting.
- **Scalability Potential**: While Docker containers excel at single instances, they also pave the way for future exploration. Docker provides the foundation for easily scaling your Redis setup by managing multiple containers in a cluster if your needs evolve.
## Configure Redis on the Host Machine
### Pull the Redis Image:
Open your terminal and run the following command to download the official Redis image from Docker Hub:
```sh
docker pull redis
```
### Run the Redis Container:
```sh
docker run -d --name my-redis -p 6379:6379 redis
```
- `-d`: Detaches the container from the terminal, allowing it to run in the background.
- `--name my-redis`: Assigns a custom name (my-redis) to the container for easier identification.
- `-p 6379:6379`: Maps the container's port 6379 (default Redis port) to the host machine's port 6379. This allows you to connect to Redis from the host using localhost:6379. If you omit this flag, Redis will be accessible only from within the container itself.
- `redis`: Specifies the image to use, which is redis in this case.
### Test Redis Functionality:
To connect with the container running Redis database, enter the following command.
`docker exec -it my-redis redis-cli`
or you may need to use this command, while using git bash in windows.
`winpty docker exec -it my-redis redis-cli`
- `docker`: This is the Docker command-line tool used to interact with Docker containers.
- `exec`: This subcommand instructs Docker to execute a process within a running container.
- `-i`: This flag stands for "interactive" and tells Docker to keep the standard input (STDIN) open for the container. This allows you to type commands within the container.
- `-t`: This flag stands for "pseudo-tty" and allocates a pseudo-terminal for the container. This provides a shell-like experience within the container.
- `my-redis`: This is the name you assigned to your Redis container when you ran it using docker run. It specifies which container you want to execute the command in.
- `redis-cli`: This is the actual command you want to run within the container. In this case, it's the redis-cli tool, which is the command-line interface for interacting with Redis.
## Redis Insight: A GUI Suite for Effortless Redis Management
Redis Insight simplifies working with Redis by offering a user-friendly GUI for developers. Here are its key strengths:
- **Visualize & Manage Data**: Effortlessly browse, filter, and interact with your Redis data structures.
- **Supports Various Structures**: Work seamlessly with strings, lists, sets, sorted sets, and hashes.
- **Flexible Data Display**: Choose from various data formats like JSON, hexadecimal, and more.
- **Redis Module Friendly**: Interact with custom functionalities provided by Redis modules.
- **Docker Integration**: Manage Redis instances running within Docker containers.
## Setup with Redis Insight
`docker run -d --name my-redis -p 6379:6379 -p 8001:8001 -e REDIS_ARGS="--requirepass mypassword" redis/redis-stack:latest`
Using this you can have a nice GUI for your database along with the terminal available at `localhost:8001`.
_Do share your thoughts about this article, and queries related to Redis in the comments._ | itskunal |
1,865,463 | maestro tiles | Maestro Tiles Collection, 12 faces design. Variation is an inherent characteristic of tiles and... | 0 | 2024-05-26T07:29:07 | https://dev.to/maestrotiles/maestro-tiles-5295 | Maestro Tiles Collection, 12 faces design. Variation is an inherent characteristic of tiles and stone. Thickness : 10mm. While the colours present on a single piece of tile will be indicative of the colour on all tiles, the colours on each piece may vary significantly from tile to tile.
Website: https://showtile.com.au/product/maestro/
Phone: 0297095836
Address: 65 Canterbury Road
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https://hub.docker.com/u/maestrotiles
https://camp-fire.jp/profile/maestrotiles
https://guides.co/a/maestro-tiles
https://www.pling.com/u/maestrotiles/
https://experiment.com/users/mtiles1
https://participez.nouvelle-aquitaine.fr/profiles/maestrotiles/activity?locale=en
https://www.dermandar.com/user/maestrotiles/
https://www.wpgmaps.com/forums/users/maestrotiles/
https://link.space/@maestrotiles
https://www.babelcube.com/user/maestro-tiles
| maestrotiles | |
1,865,461 | Bangla Tutorial: Design Responsive Headers Using Vuetify 3 & Vue.js 3 | Navigation Drawers Vuetify | Watch on YouTube Welcome to our Bangla tutorial on designing responsive headers using Vuetify 3... | 0 | 2024-05-26T07:21:31 | https://dev.to/minit61/bangla-tutorial-design-responsive-headers-using-vuetify-3-vuejs-3-navigation-drawers-vuetify-19n7 |
[Watch on YouTube](https://www.youtube.com/watch?v=Rxct-MEqwRg)
Welcome to our Bangla tutorial on designing responsive headers using Vuetify 3 and Vue.js 3! In this video, we’ll guide you step-by-step through the process of creating sleek and modern headers for your web applications. We’ll also cover how to implement navigation drawers using Vuetify, ensuring your app has a professional and user-friendly design.
🔹 What You’ll Learn:
Setting up Vuetify 3 in your Vue.js 3 project
Designing responsive headers that adapt to different screen sizes
Implementing navigation drawers for better user navigation
Customizing components to match your design needs
🔹 Key Features:
Easy-to-follow instructions in Bangla
Practical examples and real-time coding
Tips and tricks for efficient UI design
Source code provided for your reference
🔹 Who Is This For?
Beginners who are new to Vuetify and Vue.js
Intermediate developers looking to enhance their UI/UX skills
Anyone interested in building responsive web applications
🔹 Resources:
If you found this tutorial helpful, please like, share, and subscribe for more content!
🔔 Stay Connected:
Follow us on Facebook for updates
Join our Discord Community for support and networking
📧 Contact Us:
For any queries or collaboration,
GitHub: https://github.com/Minhazulmin
Website: https://minhazulmin.github.io
Facebook: https://www.facebook.com/minit61/
YouTube : https://www.youtube.com/minit61
#BanglaTutorial #Vuetify3 #Vuejs3 #ResponsiveDesign #WebDevelopment #NavigationDrawers #BanglaCoding | minit61 | |
1,865,433 | From Couch to Gym: Versatile Vrtabrae Sweatpants for Active Lifestyle | **Introduction to Vrtabrae Clothing Vrtabrae Clothing is a modern fashion brand known for its... | 0 | 2024-05-26T07:19:03 | https://dev.to/daisy_royal_8e2e61d221d24/from-couch-to-gym-versatile-vrtabrae-sweatpants-for-active-lifestyle-44na | vrtabrae | **Introduction to Vrtabrae Clothing
Vrtabrae Clothing is a modern fashion brand known for its stylish and comfortable clothing. The brand aims to revolutionize everyday wear by combining fashion and functionality. Their sweatpants, in particular, have become very popular due to their unique design and comfort. This article will delve into what makes Vrtabrae Clothing and their sweatpants special.
The Story Behind Vrtabrae Clothing
Vrtabrae Clothing was founded with a simple mission: to create clothes that look great and feel even better. The founders wanted to design apparel that people could wear comfortably in any situation, whether at home, at the gym, or out in the city. This vision has led to the creation of a range of products that are both practical and fashionable.
What Sets Vrtabrae Clothing Apart?
There are a few key elements that make Vrtabrae Clothing stand out from other brands:
Quality Materials: <a href="https://vertabrae.shop/">Vertebrae clothing</a> uses high-quality fabrics that are soft, durable, and breathable.
Innovative Designs: The designs are modern and sleek, making them suitable for various occasions.
Attention to Detail: From stitching to fit, every detail is carefully considered to ensure the best experience for the wearer.
Versatility: The clothes are designed to be versatile, so they can be worn for different activities throughout the day.
Focus on Vrtabrae Sweatpants
While Vrtabrae Clothing offers a variety of items, their sweatpants have gained particular attention. Let's explore why these sweatpants are so popular.
Comfort and Fit
One of the main reasons people love <a href="https://vertabrae.shop/vertabrae-sweatpants/">VERTABRAE SWEATPANTS</a> is because of their comfort. Made from soft, breathable materials, these sweatpants are perfect for lounging at home or staying active. The fit is designed to be relaxed yet stylish, ensuring that you look good without sacrificing comfort.
Stylish Design
Vrtabrae Sweatpants are not your typical sweatpants. They feature modern designs that can be worn in various settings. Whether you’re running errands, going to the gym, or meeting friends, these sweatpants make sure you look stylish and feel comfortable.
High-Quality Materials
The fabric used in Vrtabrae Sweatpants is of high quality. It’s soft to the touch, yet durable enough to withstand regular wear and tear. This means you can enjoy your sweatpants for a long time without worrying about them wearing out quickly.
Versatility
Vrtabrae Sweatpants are incredibly versatile. They are designed to be worn in many different situations. Here are a few ways you can wear them:
At Home: Perfect for relaxing on the couch or doing chores around the house.
At the Gym: Great for working out, thanks to their comfortable and flexible design.
Out and About: Stylish enough to wear when running errands or meeting friends.
Traveling: Ideal for long journeys where comfort is key.
How to Style Vrtabrae Sweatpants
One of the best things about Vrtabrae Sweatpants is that they are easy to style. Here are some simple tips to make the most out of your sweatpants:
Casual Look: Pair your sweatpants with a simple T-shirt and sneakers for a relaxed, everyday look.
Sporty Look: Combine them with a tank top and running shoes for a sporty, active outfit.
Chic Look: Dress them up with a fitted sweater and ankle boots for a chic, stylish appearance.
Layered Look: Add a denim jacket or a hoodie for extra warmth and style.
Why You Should Choose Vrtabrae Sweatpants
There are several reasons why Vrtabrae Sweatpants should be a staple in your wardrobe:
Comfort: They provide unmatched comfort for any activity.
Style: Their modern designs ensure you always look your best.
Durability: High-quality materials mean they will last a long time.
Versatility: Suitable for a wide range of activities and occasions.
Customer Reviews
Customers rave about Vrtabrae Sweatpants for many reasons. Here are some common praises:
Fit: Many customers love the perfect fit that is neither too tight nor too loose.
Fabric: The soft and breathable fabric is a hit among users.
Design: The stylish designs make them suitable for various settings.
Durability: Users appreciate how well the sweatpants hold up after multiple washes.
Conclusion: Embrace Comfort and Style with Vrtabrae Clothing
Vrtabrae Clothing and their sweatpants offer the perfect combination of style, comfort, and durability. Whether you are lounging at home, working out, or going out, Vrtabrae Sweatpants are designed to meet your needs and exceed your expectations. With their high-quality materials and modern designs, they are a versatile addition to any wardrobe. Embrace the revolution in casual wear with Vrtabrae Clothing and experience the perfect blend of fashion and function. | daisy_royal_8e2e61d221d24 |
1,865,432 | The Alchemai Hoodie: Where Innovation Meets Sustainabilit | The Alchemai Hoodie: Where Innovation Meets Sustainability In the rapidly evolving landscape of... | 0 | 2024-05-26T07:15:11 | https://dev.to/mohammad_asad_01/the-alchemai-hoodie-where-innovation-meets-sustainabilit-4aae | alchemai, alchemaihooie | The Alchemai Hoodie: Where Innovation Meets Sustainability
In the rapidly evolving landscape of fashion, the [Alchemai](<a href="https://alchemaihoods.store/">alchemai</a> ) H stands out as a beacon of innovation and sustainability. As the world becomes increasingly aware of the environmental impact of clothing production, the demand for eco-friendly yet stylish alternatives has never been higher. Alchemai, a forward-thinking apparel company, has risen to this challenge with revolutionary hoodie.
The Genesis of Alchemai
[Alchemai Hoodie](<a href="https://alchemaihoods.store/">alchemai</a> ) founded on the principle of creating clothing that not only looks good but also does good for the planet. The company’s name, inspired by the ancient practice of alchemy, reflects mission to transform the fashion industry. The Alchemai Hoodie is a perfect embodiment of this mission, combining cutting-edge technology with sustainable materials.
Materials and Sustainability
At the core of the Alchemai Hoodie’s appeal is its use of sustainable materials. The hoodie is made from organic cotton and recycled polyester, significantly reducing its environmental footprint compared to traditional hoodies. Organic cotton is grown without harmful pesticides and synthetic fertilizers, which not only preserves the health of the soil but also ensures that farmers work in safer conditions. Recycled polyester, on the other hand, gives a second life to plastic bottles, diverting waste from landfills and oceans.
Moreover, Alchemai's commitment to sustainability extends beyond just the materials. The production process is designed to minimize water usage and energy consumption. The company also ensures that all dyes used are non-toxic and environmentally friendly, reducing the release of harmful chemicals into the ecosystem.
Technological Innovation
What truly sets the Alchemai Hoodie apart is the incorporation of advanced textile technology. The hoodie features temperature-regulating fabric that adapts to the wearer’s body heat, providing optimal comfort in varying weather conditions. This is achieved through the use of phase-change materials (PCMs) embedded in the fabric, which absorb, store, and release heat as needed.
Additionally, the Alchemai Hoodie is designed with antimicrobial properties, preventing the growth of odor-causing bacteria. This feature not only keeps the hoodie fresher for longer but also reduces the need for frequent washing, thereby saving water and extending the garment’s lifespan.
Ethical Production
Alchemai is also deeply committed to ethical manufacturing practices. The company ensures that all workers involved in the production of the hoodie are paid fair wages and work in safe conditions. This ethical approach not only supports the workers but also promotes a more humane and just fashion industry.
Style and Functionality
Despite its strong focus on sustainability and technology, the Alchemai Hoodie does not compromise on style. It features a sleek, modern design that appeals to a wide range of tastes. The hoodie is available in various colors and sizes, ensuring that there is an option for everyone. Its functional design includes spacious pockets, a comfortable hood, and durable zippers, making it a versatile addition to any wardrobe.
Community and Impact
Alchemai is more than just a clothing brand; it is a movement towards a more sustainable and ethical fashion industry. The company actively engages with its community through educational initiatives and collaborations with environmental organizations. By purchasing an Alchemai Hoodie, customers become part of this movement, contributing to positive change in the fashion world.
Conclusion
The Alchemai Hoodie represents a significant step forward in the quest for sustainable and innovative fashion. By combining eco-friendly materials, advanced textile technology, ethical production practices, and stylish design, Alchemai has created a product that meets the needs of the modern consumer while caring for the planet. As more people become aware of the environmental impact of their clothing choices, the Alchemai Hoodie stands as a testament to what is possible when creativity and sustainability come together. | mohammad_asad_01 |
1,865,431 | Next js 15 RC !! Now available . | The Next.js 15 Release Candidate (RC) is out now for testing. It lets you try out the latest features... | 0 | 2024-05-26T07:13:02 | https://dev.to/aknankpuria/next-js-15-rc-now-available--2li5 | react, react15, nextjs |
The Next.js 15 Release Candidate (RC) is out now for testing. It lets you try out the latest features before the final release.
Here’s what’s new:
- **React Support:** Now supports React 19 RC, React Compiler (Experimental), and improves hydration errors.
- **Caching Changes:** Fetch requests, GET Route Handlers, and client navigations are no longer cached by default.
- **Partial Prerendering (Experimental):** Introduces a new Layout and Page config option for gradual adoption.
- **next/after (Experimental):** Offers a new API to run code after a response has finished streaming.
- **create-next-app:** Gets an updated design and a new flag to enable Turbopack in local development.
- **Bundling external packages (Stable):** Introduces new config options for App and Pages Router.
To try it out, run this command in your terminal:
```npm install next@rc react@rc react-dom@rc```
Note: You can view the Next.js 15 RC documentation at rc.nextjs.org/docs | aknankpuria |
1,865,430 | The Alchemai Hoodie: Revolutionizing Smart Apparel | The Alchemai Hoodie: Revolutionizing Smart Apparel In the rapidly evolving world of wearable... | 0 | 2024-05-26T07:11:24 | https://dev.to/mohammad_asad_01/the-alchemai-hoodie-revolutionizing-smart-apparel-5b4g | alchemaihoodie, alchemai | The Alchemai Hoodie: Revolutionizing Smart Apparel
In the rapidly evolving world of wearable technology,[ Alchemai](<a href="https://alchemaihoods.store/">alchemai</a> ) s out as a groundbreaking innovation. Seamlessly blending fashion with cutting-edge technology, this hoodie is not just a garment; it's a statement about the future of apparel. Combining advanced materials, intelligent design, and multifunctional capabilities, the Alchemai Hoodie offers a glimpse into how clothing can enhance our daily lives in ways previously unimaginable.
The Genesis of the[ Alchemai Hoodie](<a href="https://alchemaihoods.store/">alchemai</a> )
The Alchemai Hoodie was conceived by a group of tech enthusiasts and fashion designers who envisioned a product that could do more than just keep the wearer warm. They aimed to create a hoodie that would integrate seamlessly into the digital age, offering functionality and style in equal measure. The result is a smart hoodie that is both aesthetically pleasing and technologically advanced, catering to the needs of modern consumers who crave convenience and connectivity.
Advanced Materials and Design
At the core of the Alchemai Hoodie is its innovative use of advanced materials. The fabric is embedded with conductive fibers that enable a variety of technological features without compromising on comfort or durability. The hoodie is lightweight, breathable, and resistant to weather elements, making it suitable for a range of activities and environments.
One of the standout features of the Alchemai Hoodie is its temperature regulation system. The hoodie can automatically adjust its thermal properties based on the external environment and the wearer's body temperature. This is achieved through a combination of phase-change materials and embedded sensors that monitor conditions in real-time, ensuring optimal comfort at all times.
Smart Features and Connectivity
The Alchemai Hoodie is packed with smart features designed to enhance the wearer's lifestyle. Integrated Bluetooth connectivity allows the hoodie to sync with smartphones and other devices, enabling a range of functions:
Health Monitoring: Built-in sensors track vital signs such as heart rate, body temperature, and activity levels. The data is synced with a mobile app, providing users with real-time health insights and personalized recommendations.
Navigation Assistance: The hoodie can provide haptic feedback for navigation, subtly vibrating to indicate turns or directions, making it a perfect companion for urban explorers and travelers.
Audio Integration: Discreetly embedded speakers and a microphone allow for hands-free calls and seamless audio playback, eliminating the need for cumbersome headphones.
Sustainability and Ethical Production
In addition to its technological prowess, the Alchemai Hoodie is committed to sustainability and ethical production. The materials used are sourced from environmentally friendly suppliers, and the manufacturing process emphasizes fair labor practices. This commitment to sustainability not only reduces the environmental footprint of the hoodie but also ensures that consumers can feel good about their purchase.
The Future of Wearable Technology
The Alchemai Hoodie represents a significant leap forward in the realm of wearable technology. As the line between fashion and function continues to blur, products like this hoodie demonstrate the potential for clothing to play a more active role in our lives. With continuous advancements in smart textiles and wearable tech, the future promises even more innovative and integrated apparel solutions.
In conclusion, the Alchemai Hoodie is more than just a piece of clothing; it is a testament to the potential of smart apparel. By merging advanced materials with state-of-the-art technology, it offers a unique blend of style, comfort, and functionality. As we look to the future, the Alchemai Hoodie sets a new standard for what we can expect from our everyday attire, paving the way for a new era of intelligent fashion. | mohammad_asad_01 |
1,863,630 | How To Use JSON with Comments for Configs | Most of the tools we use daily in the Node.js ecosystem utilize config files that support various... | 20,406 | 2024-05-26T07:11:06 | https://zirkelc.dev/posts/vscode-json-with-comments | productivity, vscode, javascript, tutorial | Most of the tools we use daily in the Node.js ecosystem utilize config files that support various formats such as `.js/cjs/mjs`, `.yaml/toml`, or `.json`. I usually prefer to work with simple text formats like JSON over JavaScript because it spares me the hassle of navigating the ESM vs. CJS battle for the correct file extension and export specifier. Even better, if the config publishes a JSON schema, then you get type safety without having to rely on JSDoc or TypeScript types.
The biggest downside to using JSON for config files is, in my opinion, its lack of support for comments. I want to explain why I enabled a certain feature or disabled a certain rule. I know most tools still accept comments in JSON files because they don't use the native `JSON.parse` function, which errors on comments, but instead use custom packages like `JSON5` that support comments.
My new go-to linter, [Biome.js](https://biomejs.dev/guides/getting-started/), solves this by accepting a `biome.jsonc` (JSON with Comments) as a config file. However, other build tools like [Turbo](https://turbo.build/repo/docs/reference/configuration) only accept a plain `turbo.json` file, even though they allow for comments embedded in the JSON. When you open this file in VSCode, you will encounter numerous errors because of the comments.
VSCode opens this file based on its file extension in JSON language mode (see the language indicator in the bottom bar). Interestingly, if you open a `tsconfig.json`, you will notice that VSCode interprets this file as JSON with Comments even if it doesn't contain any comments.
VSCode allows you to associate a file name with a certain language. These [file associations](https://code.visualstudio.com/docs/languages/identifiers) are defined in the `.vscode/settings.json` file:
```jsonc
// .vscode/settings.json
{
"files.associations": {
"turbo.json": "jsonc"
}
}
```
Now opening the `turbo.json` file again will automatically use the right language (JSON with Comments). However, keep in mind that you should verify if your tool actually supports JSON with comments. For example, Node.js doesn't support comments in `package.json`, and doing so will break your package and potentially all dependent packages. | zirkelc |
1,865,428 | Mastering State Management in Vue.js with Pinia | State management in front-end applications is crucial as your app scales and grows in complexity. If... | 0 | 2024-05-26T07:00:45 | https://dev.to/delia_code/mastering-state-management-in-vuejs-with-pinia-2dp6 | webdev, vue, javascript, beginners |
State management in front-end applications is crucial as your app scales and grows in complexity. If you’re familiar with Vue.js, you might have heard of Vuex, the official state management library. But have you heard of Pinia? Pinia is a lightweight alternative to Vuex, providing an intuitive API, full TypeScript support, and a modular design. In this tutorial, we’ll dive into state management using Pinia, starting from the basics and moving to more advanced concepts.
## Introduction to Pinia
### What is Pinia?
Pinia is a state management library for Vue.js that was inspired by Vuex but designed to be more intuitive and less boilerplate-heavy. It leverages the latest Vue.js composition API, making it a modern and efficient tool for managing state in your Vue applications.
### Why Use Pinia?
- **Simplicity**: Pinia's API is simple and easy to use.
- **Modularity**: Encourages modular store definitions.
- **TypeScript Support**: Built with TypeScript support in mind.
- **DevTools Integration**: Pinia integrates seamlessly with Vue DevTools.
## Getting Started with Pinia
### Installation
First, let's set up a Vue.js project with Pinia. If you don't have a Vue project yet, you can create one using Vue CLI:
```bash
npm install -g @vue/cli
vue create my-vue-app
cd my-vue-app
```
Next, install Pinia:
```bash
npm install pinia
```
### Setting Up Pinia
To use Pinia in your Vue application, you need to create a Pinia instance and pass it to your Vue app:
```javascript
// main.js
import { createApp } from 'vue'
import { createPinia } from 'pinia'
import App from './App.vue'
const app = createApp(App)
const pinia = createPinia()
app.use(pinia)
app.mount('#app')
```
### Creating a Store
Stores in Pinia are similar to Vuex but are defined using functions. Let’s create a basic store:
```javascript
// stores/counter.js
import { defineStore } from 'pinia'
export const useCounterStore = defineStore('counter', {
state: () => ({
count: 0,
}),
getters: {
doubleCount: (state) => state.count * 2,
},
actions: {
increment() {
this.count++
},
},
})
```
In the code above:
- **state**: Returns an object with the initial state.
- **getters**: Compute derived state based on the current state.
- **actions**: Methods that can change the state and contain business logic.
### Using the Store in Components
Now, let’s use this store in a Vue component:
```vue
<!-- Counter.vue -->
<template>
<div>
<p>Count: {{ count }}</p>
<p>Double Count: {{ doubleCount }}</p>
<button @click="increment">Increment</button>
</div>
</template>
<script>
import { useCounterStore } from '@/stores/counter'
export default {
setup() {
const counterStore = useCounterStore()
return {
count: counterStore.count,
doubleCount: counterStore.doubleCount,
increment: counterStore.increment,
}
},
}
</script>
```
## Advanced Concepts with Pinia
### Modular Stores
As your application grows, it’s essential to keep your stores modular. You can create multiple stores and use them together:
```javascript
// stores/user.js
import { defineStore } from 'pinia'
export const useUserStore = defineStore('user', {
state: () => ({
name: 'John Doe',
isLoggedIn: false,
}),
actions: {
login(name) {
this.name = name
this.isLoggedIn = true
},
logout() {
this.name = ''
this.isLoggedIn = false
},
},
})
```
```vue
<!-- User.vue -->
<template>
<div>
<p v-if="isLoggedIn">Welcome, {{ name }}</p>
<button v-if="!isLoggedIn" @click="login('Jane Doe')">Login</button>
<button v-if="isLoggedIn" @click="logout">Logout</button>
</div>
</template>
<script>
import { useUserStore } from '@/stores/user'
export default {
setup() {
const userStore = useUserStore()
return {
name: userStore.name,
isLoggedIn: userStore.isLoggedIn,
login: userStore.login,
logout: userStore.logout,
}
},
}
</script>
```
### Persisting State
To persist the state across page reloads, you can use plugins like `pinia-plugin-persistedstate`:
```bash
npm install pinia-plugin-persistedstate
```
```javascript
// main.js
import { createApp } from 'vue'
import { createPinia } from 'pinia'
import piniaPersist from 'pinia-plugin-persistedstate'
import App from './App.vue'
const app = createApp(App)
const pinia = createPinia()
pinia.use(piniaPersist)
app.use(pinia)
app.mount('#app')
```
```javascript
// stores/counter.js
import { defineStore } from 'pinia'
export const useCounterStore = defineStore('counter', {
state: () => ({
count: 0,
}),
getters: {
doubleCount: (state) => state.count * 2,
},
actions: {
increment() {
this.count++
},
},
persist: true,
})
```
### Handling Asynchronous Actions
Pinia allows you to handle asynchronous operations within your actions. Here’s an example of fetching data from an API:
```javascript
// stores/posts.js
import { defineStore } from 'pinia'
import axios from 'axios'
export const usePostStore = defineStore('post', {
state: () => ({
posts: [],
}),
actions: {
async fetchPosts() {
try {
const response = await axios.get('https://jsonplaceholder.typicode.com/posts')
this.posts = response.data
} catch (error) {
console.error('Failed to fetch posts:', error)
}
},
},
})
```
```vue
<!-- Posts.vue -->
<template>
<div>
<button @click="fetchPosts">Fetch Posts</button>
<ul>
<li v-for="post in posts" :key="post.id">{{ post.title }}</li>
</ul>
</div>
</template>
<script>
import { usePostStore } from '@/stores/posts'
export default {
setup() {
const postStore = usePostStore()
return {
posts: postStore.posts,
fetchPosts: postStore.fetchPosts,
}
},
}
</script>
```
## Conclusion
Pinia is a robust and efficient state management solution for Vue.js applications, offering simplicity, modularity, and excellent TypeScript support. By following this tutorial, you should now have a solid understanding of how to get started with Pinia, manage state, and handle more advanced use cases like modular stores, state persistence, and asynchronous actions.
Embrace Pinia to make your Vue.js applications more maintainable and scalable. Share your journey and progress with the hashtag #PiniaJourney to inspire others in the community!
Happy coding! 🚀 | delia_code |
1,865,427 | The Alchemai Hoodie: Where Innovation Meets Sustainability | The Alchemai Hoodie: Where Innovation Meets Sustainability In the rapidly evolving landscape of... | 0 | 2024-05-26T07:00:19 | https://dev.to/mohammad_asad_01/the-alchemai-hoodie-where-innovation-meets-sustainability-em8 | alchemai, alchemaihooodie | The Alchemai Hoodie: Where Innovation Meets Sustainability
In the rapidly evolving landscape of fashion, the Alchemai Hoodie stands out as a beacon of innovation and sustainability. As the world becomes increasingly aware of the environmental impact of clothing production, the demand for eco-friendly yet stylish alternatives has never been higher. Alchemai, a forward-thinking apparel company, has risen to this challenge with there revolutionary hoodie.
The Genesis of Alchemai
Alchemai was founded on the principle of creating clothing that not only looks good but also does good for the planet. The company’s name, inspired by the ancient practice of alchemy, reflects their mission to transform the fashion industry. The Alchemai Hoodie is a perfect embodiment of this mission, combining cutting-edge technology with sustainable materials.
Materials and Sustainability
At the core of the Alchemai Hoodie’s appeal is its use of sustainable materials. The hoodie is made from organic cotton and recycled polyester, significantly reducing its environmental footprint compared to traditional hoodies. Organic cotton is grown without harmful pesticides and synthetic fertilizers, which not only preserves the health of the soil but also ensures that farmers work in safer conditions. Recycled polyester, on the other hand, gives a second life to plastic bottles, diverting waste from landfills and oceans.
Moreover, Alchemai's commitment to sustainability extends beyond just the materials. The production process is designed to minimize water usage and energy consumption. The company also ensures that all dyes used are non-toxic and environmentally friendly, reducing the release of harmful chemicals into the ecosystem.
Technological Innovation
What truly sets the Alchemai Hoodie apart is the incorporation of advanced textile technology. The hoodie features temperature-regulating fabric that adapts to the wearer’s body heat, providing optimal comfort in varying weather conditions. This is achieved through the use of phase-change materials (PCMs) embedded in the fabric, which absorb, store, and release heat as needed.
Additionally, the Alchemai Hoodie is designed with antimicrobial properties, preventing the growth of odor-causing bacteria. This feature not only keeps the hoodie fresher for longer but also reduces the need for frequent washing, thereby saving water and extending the garment’s lifespan.
Ethical Production
Alchemai is also deeply committed to ethical manufacturing practices. The company ensures that all workers involved in the production of the hoodie are paid fair wages and work in safe conditions. This ethical approach not only supports the workers but also promotes a more humane and just fashion industry.
Style and Functionality
Despite its strong focus on sustainability and technology, the Alchemai Hoodie does not compromise on style. It features a sleek, modern design that appeals to a wide range of tastes. The hoodie is available in various colors and sizes, ensuring that there is an option for everyone. Its functional design includes spacious pockets, a comfortable hood, and durable zippers, making it a versatile addition to any wardrobe.
Community and Impact
Alchemai is more than just a clothing brand; it is a movement towards a more sustainable and ethical fashion industry. The company actively engages with its community through educational initiatives and collaborations with environmental organizations. By purchasing an Alchemai Hoodie, customers become part of this movement, contributing to positive change in the fashion world.
Conclusion
The Alchemai Hoodie represents a significant step forward in the quest for sustainable and innovative fashion. By combining eco-friendly materials, advanced textile technology, ethical production practices, and stylish design, Alchemai has created a product that meets the needs of the modern consumer while caring for the planet. As more people become aware of the environmental impact of their clothing choices, the Alchemai Hoodie stands as a testament to what is possible when creativity and sustainability come together. | mohammad_asad_01 |
1,865,426 | How to protect your Next.js Routes with reCAPTCHA | Protecting the public endpoints of your web app, is one of the most important tasks you could... | 0 | 2024-05-26T06:58:04 | https://shipped.club/blog/add-recaptcha-to-nextjs | Protecting the public endpoints of your web app, is one of the most important tasks you could do.
Even if you don’t expect much traffic on your websites, malicious attempts can always happen.
It happened to me when I launched a waitlist website, I didn’t expect many eyes to visit the page, but someone noticed the `/api/waitlist` endpoint, I used to collect the email of the interested users, and they started to call it repeatedly.
One of the easiest mitigations is to add a captcha challenge to the web user interface.
There are different types of captchas, and they have evolved quite a lot over the last few years.
Usually, they are visual quizzes or simple puzzles (called challenges) to solve to unlock a feature on a website.
This is an example, select all square images with traffic lights.
Robots can’t solve these puzzles, therefore the backend request doesn’t start.
But how can you protect your backend with a puzzle solved on the frontend?
## How Captcha Protection Works
This is how it works.
When the puzzle is successfully solved, the captcha service delivers a `token` (a string).
This token is unique for the puzzle resolution of a user, and you need to send it to your backend.
In your backend, you need to validate the token, by calling the captcha service backend.
In this article, I show you how you can implement a captcha protection using on the most famous service reCAPTCHA by Google and your Next.js website.
reCAPTCHA by Google has been improved over time, and the latest version of it, version 3, doesn’t require every user to solve the challenge is the proprietary algorithm of Google doesn’t recognize a suspect client.
Which is a great news for our real users!
## Create a reCAPTCHA
First of all, create a reCAPTCHA. Visit the website https://www.google.com/recaptcha/about/ and access the v3 Admin Console.
Once in, click on the “+” plus icon to create a new reCAPTCHA.
Add the label and the domain of your website.
You can select v3 (score based) or v2.
v2 always asks for a challenge, while v3 asks for a challenge only if the user score, automatically calculated, is not high. I select v3.
Click on Submit.
Now Google gives you the Site Key and the Secret Key. Copy them in a secure place.
Now let’s create two environment variables.
Usually you have a .env file for your local development and you need to set them on your hosting solution, like Vercel.
```yaml
NEXT_PUBLIC_RECAPTCHA_SITE_KEY="you_site_key"
RECAPTCHA_SECRET_KEY="your_secret_key"
```
Notice that one environment variables is prefixed with `NEXT_PUBLIC_` while the other not.
`NEXT_PUBLIC_RECAPTCHA_SITE_KEY` is accessible from the frontend, and therefore it’s publicly visible, while `RECAPTCHA_SECRET_KEY` will be accessible only by the backend code, and therefore no one can read the value.
## Create your client component
Now, let’s create a Next.js client component with an input field and a button.
For a waitlist it would look like this one:
```tsx
<input
placeholder="your@email.com"
onChange={e => setEmail(e.target.value)}
/>
<button
onClick={onAddToWaitlist}
>
Join the waitlist
</button>
```
Now, we need to implement `onAddToWaitlist` so that it calls the reCAPTCHA service.
To integrate reCAPTCHA you need to integrate the Google JavaScript script.
Open your `layout.tsx` file (if you are using the App Router) and add this
```tsx
<script
defer
type="text/javascript"
src={`https://www.google.com/recaptcha/api.js?render=${process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY}`}
/>
```
At this point, the JavaScript object `grecaptcha` will be globally available in our web app.
Let’s implement `onAddToWaitlist`
```tsx
const onAddToWaitlist = () => {
// @ts-ignore
grecaptcha.ready(function () {
// @ts-ignore
grecaptcha
.execute(process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY, {
action: "submit",
})
.then(function (token: string) {
if (email) {
axios
.post("/api/waitlist", {
email,
captchaToken: token,
})
.then(() => {
// success
})
.catch((err) => {
// error
})
}
});
});
};
```
I used `axios` because it’s comfortable to use, but you can use `fetch` as well.
## Protect your API route
At this point, we are only missing the backend api route (`src/app/api/waitlist/route.ts`)
```tsx
import axios, { HttpStatusCode } from "axios";
import { NextResponse } from "next/server";
import qs from "qs";
export async function POST(req: Request) {
const body = await req.json();
const email = body.email;
const captchaToken = body.captchaToken;
if (!captchaToken) {
return NextResponse.json(
{ error: "Unauthorized" },
{ status: HttpStatusCode.Unauthorized }
);
}
if (!email) {
return NextResponse.json(
{ error: "Email is required" },
{ status: HttpStatusCode.BadRequest }
);
}
const options = {
method: "POST",
headers: { "content-type": "application/x-www-form-urlencoded" },
data: qs.stringify({
secret: process.env.RECAPTCHA_SECRET_KEY,
response: captchaToken,
}),
url: "https://www.google.com/recaptcha/api/siteverify",
};
const response = await axios(options);
if (response.data.success === false) {
return NextResponse.json(
{ error: "Unauthorized" },
{ status: HttpStatusCode.Unauthorized }
);
}
// the captcha token is valid
}
```
## Conclusion
Captchas are one of the most effective ways to protect a website, and the easiest solution to implement.
The captcha service from Google has improved a lot lately, and it doesn’t always require to solve a challenge to our users, which is perfect to provide them a great user experience.
I hope this was useful.
Cheers | ikoichi | |
1,865,425 | Debugging Shaders: Mastering Tools and Methods for Effective Shader Debugging | Shaders play a crucial role in modern graphics rendering, breathing life into visuals for games and... | 0 | 2024-05-26T06:55:35 | https://dev.to/hayyanstudio/debugging-shaders-mastering-tools-and-methods-for-effective-shader-debugging-3en8 | shader, beginners, gamedev, programming | Shaders play a crucial role in modern graphics rendering, breathing life into visuals for games and applications. However, debugging shaders can be quite challenging due to their parallel execution on the GPU and the complexity of graphics pipelines. In this blog, we'll delve into the essential tools and methods for effectively debugging [shader code](https://glsl.site/post/shader-programming-basics-key-concepts-and-syntax/), ensuring your visuals are flawless and perform optimally.
## Understanding Shader Debugging
Shader debugging involves identifying and resolving issues in shader programs that execute on the GPU. These issues can range from visual artifacts and incorrect lighting to performance bottlenecks, crashes, and compilation errors. Given the unique nature of [GPU programming](https://glsl.site/post/understanding-vertex-shaders-unveiling-the-magic-behind-3d-graphics/), shader debugging requires specialized tools and techniques.
## Essential Tools for Shader Debugging
- RenderDoc: RenderDoc is an open-source graphics debugger that captures and inspects frames rendered by your application. It offers a detailed view of the graphics pipeline, enabling you to step through each draw call, inspect shader inputs and outputs, and analyze performance. RenderDoc supports various APIs, including Direct3D, [OpenGL](https://glsl.site/post/why-godot-is-a-game-changer-in-game-development/), and Vulkan, making it a versatile tool for shader debugging.
- NVIDIA Nsight Graphics: NVIDIA Nsight Graphics is a robust tool for debugging and profiling GPU applications. It features frame debugging, shader editing, and performance analysis capabilities. With Nsight Graphics, you can capture frames, view GPU states, and make real-time changes to shader code to observe their effects immediately.
- Microsoft PIX: PIX is a performance tuning and debugging tool for DirectX applications on Windows. It allows you to capture GPU frames, inspect draw calls, and analyze shader execution. PIX provides detailed insights into the DirectX pipeline, helping you identify and fix rendering issues and performance problems.
- Shader Debugger in Visual Studio: Visual Studio includes a shader debugger for DirectX applications, enabling you to set breakpoints, step through shader code, and inspect variables. This tool integrates seamlessly with your development environment, making it easier to debug shaders alongside your application code.
- WebGL Inspector: For WebGL applications, WebGL Inspector is a browser extension that provides real-time inspection and debugging of WebGL calls. It allows you to capture frames, view shader source code, and analyze the WebGL state, helping you identify rendering issues in your web-based graphics applications.
## Effective Methods for Shader Debugging
Shader Compilation Errors: Begin by checking for compilation errors in your shaders. Most graphics APIs provide error messages when shader compilation fails. Ensure your shaders compile successfully before moving on to runtime debugging.
1. Visual Inspection: Visual artifacts can often provide clues about shader issues. Look for anomalies such as incorrect colors, lighting problems, or unexpected shapes. Comparing the rendered output with reference images can help identify discrepancies.
2.
3. Simplify the Shader: Simplify your shader code to isolate the problem. Start with a basic version of the shader and gradually add complexity until the issue reappears. This incremental approach can help pinpoint the exact cause of the problem.
4.
5. Use Debugging Tools: Utilize tools like RenderDoc, Nsight Graphics, PIX, and WebGL Inspector to capture frames and inspect the graphics pipeline. These tools allow you to view shader inputs and outputs, check the state of the GPU, and analyze performance metrics.
6.
7. Log Intermediate Values: Insert logging statements in your shader code to output intermediate values. This technique, often called "shader printf," can help you understand how data is being processed within the shader. Use tools like RenderDoc's shader debugger to view these logged values.
8.
9. Check Shader Inputs: Ensure that the inputs to your shaders, such as textures, buffers, and uniforms, are correctly set up. Incorrect inputs can lead to unexpected results. Use debugging tools to inspect the values of these inputs at runtime.
10.
11. Step Through Shader Code: Use shader debuggers to set breakpoints and step through your shader code. This allows you to inspect variables and understand the flow of execution. Look for unexpected values or logic errors that could be causing issues.
12.
13. Optimize for Performance: Performance issues can often be a sign of inefficient shader code. Use profiling tools to identify bottlenecks and optimize your shaders for better performance. Techniques such as minimizing ALU operations, optimizing memory access, and reducing branching can help improve performance.
14.
15. Test on Multiple Devices: Shaders can behave differently on various GPUs and drivers. Test your shaders on multiple devices to ensure compatibility and identify device-specific issues. Debugging on different hardware can help uncover hidden problems.
16.
17. Community and Documentation: Don’t hesitate to seek help from the community and refer to documentation. Online forums, Q&A sites, and official documentation can provide valuable insights and solutions to common shader debugging problems.
## Practical Example of Shader Debugging
Let’s consider a simple example to illustrate some of these debugging techniques. Suppose you have a fragment shader that is supposed to apply a color gradient based on the fragment’s position but instead displays solid black.
```c
#version 330 core
out vec4 FragColor;
void main()
{
vec2 uv = gl_FragCoord.xy / iResolution.xy;
FragColor = vec4(uv, 0.0, 1.0);
}
```
### Step 1: Check for Compilation Errors
First, ensure that the shader compiles without errors. Use your graphics API’s error reporting to catch any compilation issues.
### Step 2: Visual Inspection
Next, visually inspect the output. In this case, the shader outputs solid black, indicating a possible issue with the calculation of uv or the final color assignment.
### Step 3: Simplify the Shader
Simplify the shader to narrow down the issue. Start by outputting a constant color to confirm the rendering pipeline is working.
```c
#version 330 core
out vec4 FragColor;
void main()
{
FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Output red color
}
```
If the output is red, the issue lies in the calculation of uv or its subsequent use.
### Step 4: Use Debugging Tools
Capture a frame using `RenderDoc` or another debugging tool. Inspect the values of `gl_FragCoord` and `iResolution` to ensure they are correctly set.
### Step 5: Log Intermediate Values
Log intermediate values to understand how data is processed. Modify the shader to output the value of `uv` as colors:
```c
#version 330 core
out vec4 FragColor;
void main()
{
vec2 uv = gl_FragCoord.xy / iResolution.xy;
FragColor = vec4(uv, 0.0, 1.0); // Output the uv coordinates as colors
}
```
Capture a frame and inspect the output. If `uv` is not as expected, check the values of `gl_FragCoord` and `iResolution`.
### Step 6: Check Shader Inputs
Ensure that `iResolution` is correctly passed to the shader. If the resolution is not set, `uv` will not be calculated correctly.
### Step 7: Step Through Shader Code
Use a shader debugger to set breakpoints and step through the shader code, inspecting the values of variables at each step. This can help identify where the calculation goes wrong.
### Step 8: Optimize for Performance
In this simple shader, performance is not an issue, but in more complex shaders, use profiling tools to identify bottlenecks and optimize the code.
### Step 9: Test on Multiple Devices
Run the shader on different GPUs and drivers to ensure it behaves consistently. Differences in hardware and driver implementations can cause unexpected behavior.
### Step 10: Community and Documentation
If you’re still stuck, seek help from the community. Post your issue on forums or Q&A sites, providing details about your shader code and the problem you’re encountering.
## Conclusion
Debugging shaders is an essential skill for any graphics programmer. By leveraging powerful tools like RenderDoc, Nsight Graphics, PIX, and WebGL Inspector, and applying effective debugging methods, you can identify and fix issues in your shader code efficiently. Start with shader compilation errors, visually inspect your output, simplify shaders to isolate problems, and utilize debugging tools to step through code and log intermediate values. By following these tips and tricks, you’ll be well-equipped to tackle even the most challenging shader debugging tasks and ensure your graphics applications run smoothly and look stunning. | hayyanstudio |
1,865,424 | My Pen on CodePen | Check out this Pen I made! | 0 | 2024-05-26T06:54:14 | https://dev.to/708_lucas_8aacb1177721898/my-pen-on-codepen-1a6h | codepen | Check out this Pen I made!
{% codepen https://codepen.io/708-Lucas/pen/abrzpaX %} | 708_lucas_8aacb1177721898 |
1,865,423 | A Step-by-Step Tutorial on Setting Up Jenkins for Spring Boot Development | Introduction Jenkins is an open-source automation server that enables developers to build,... | 0 | 2024-05-26T06:47:23 | https://dev.to/fullstackjava/jenkins-and-spring-boot-a-comprehensive-guide-5f20 | webdev, programming, tutorial, devops | ### Introduction
Jenkins is an open-source automation server that enables developers to build, test, and deploy their software efficiently. It is widely used in Continuous Integration (CI) and Continuous Deployment (CD) pipelines, making it a crucial tool in modern software development. In this blog, we will explore Jenkins, its features, and how to integrate it with a Spring Boot application for a seamless CI/CD pipeline.
### What is Jenkins?
Jenkins automates parts of the software development process, including building, testing, and deploying code. It helps teams integrate changes more frequently and ensures that software is always in a deployable state.
#### Key Features of Jenkins:
- **Easy Installation**: Jenkins can be installed via native system packages, Docker, or standalone Java application.
- **Extensible**: It has a vast library of plugins that integrate with various tools and platforms.
- **Distributed Builds**: Jenkins can distribute build tasks across multiple machines, improving performance and reliability.
- **Pipeline as Code**: Using Jenkinsfile, you can define your CI/CD pipelines as code, making them version-controllable and reproducible.
### Setting Up Jenkins
#### Prerequisites:
- Java Development Kit (JDK) installed on your system.
- A Spring Boot application to work with.
#### Steps to Install Jenkins:
1. **Download and Install Jenkins**:
- **On Windows**:
- Download the Jenkins installer from the [official website](https://jenkins.io/download/).
- Run the installer and follow the setup wizard.
- **On Linux**:
```sh
wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -
sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
sudo apt-get update
sudo apt-get install jenkins
```
- **Using Docker**:
```sh
docker run -p 8080:8080 -p 50000:50000 jenkins/jenkins:lts
```
2. **Start Jenkins**:
- **Windows**: Jenkins starts automatically after installation.
- **Linux**: Use `sudo systemctl start jenkins`.
3. **Access Jenkins**:
- Open your browser and go to `http://localhost:8080`.
- Follow the on-screen instructions to unlock Jenkins using the initial admin password found in `/var/lib/jenkins/secrets/initialAdminPassword`.
### Integrating Jenkins with Spring Boot
#### 1. **Create a Spring Boot Project**
If you don't have a Spring Boot project, you can generate one using [Spring Initializr](https://start.spring.io/).
#### 2. **Set Up Jenkins Job**
1. **Create a New Job**:
- Go to Jenkins dashboard.
- Click on "New Item" and enter a name for your job.
- Choose "Freestyle project" and click "OK".
2. **Configure Source Code Management**:
- In the job configuration page, under "Source Code Management", select "Git".
- Enter the repository URL and credentials if necessary.
3. **Configure Build Triggers**:
- Under "Build Triggers", you can choose "Poll SCM" or "GitHub hook trigger for GITScm polling" to automate the build process.
4. **Add Build Steps**:
- Under "Build", click "Add build step" and select "Invoke Gradle script" or "Invoke top-level Maven targets" depending on your build tool.
- For Gradle, specify `build` as the Tasks.
- For Maven, specify `clean install`.
5. **Save and Apply** the configuration.
#### 3. **Pipeline as Code with Jenkinsfile**
Instead of a freestyle project, you can define your pipeline in a `Jenkinsfile` and store it in your repository.
##### Example Jenkinsfile for a Spring Boot Application:
```groovy
pipeline {
agent any
stages {
stage('Checkout') {
steps {
git 'https://github.com/your-repo/spring-boot-app.git'
}
}
stage('Build') {
steps {
sh './gradlew clean build' // Use 'mvn clean install' if using Maven
}
}
stage('Test') {
steps {
sh './gradlew test' // Use 'mvn test' if using Maven
}
}
stage('Package') {
steps {
sh './gradlew bootJar' // Use 'mvn package' if using Maven
}
}
stage('Deploy') {
steps {
// Add your deployment steps here, e.g., using SCP, SSH, Docker, etc.
sh 'scp build/libs/*.jar user@server:/path/to/deploy'
}
}
}
post {
success {
echo 'Build and Deploy succeeded!'
}
failure {
echo 'Build or Deploy failed!'
}
}
}
```
#### 4. **Run the Pipeline**
- Commit and push your `Jenkinsfile` to your repository.
- Create a new pipeline job in Jenkins.
- In the job configuration, point to your repository where the `Jenkinsfile` is located.
- Jenkins will automatically detect and execute the pipeline defined in the `Jenkinsfile`.
### Conclusion
Integrating Jenkins with a Spring Boot application streamlines the development process by automating builds, tests, and deployments. This guide provides a solid foundation for setting up and using Jenkins to enhance your CI/CD pipeline. By following these steps, you can ensure that your software is always in a deployable state, improving both development speed and product quality. | fullstackjava |
1,821,835 | 5 WordPress Plugin that You Must Have to Speed up Your Website in 2024 | Website speed is no longer a luxury, it's a necessity. In today's fast-paced online world, visitors... | 0 | 2024-05-26T06:45:34 | https://dev.to/ajeetraina/5-wordpress-plugin-that-you-must-have-to-speed-up-your-website-in-2024-o7b | wordpress, website | Website speed is no longer a luxury, it's a necessity. In today's fast-paced online world, visitors expect websites to load instantly. A slow website can lead to frustrated users, higher bounce rates, and ultimately, lost business.
But fear not, WordPress users! There are a number of powerful plugins available to help you optimize your website's performance and ensure a lightning-fast browsing experience. In this blog post, we'll explore five essential plugins that will help you take your website's speed to the next level in 2024.
## 1. Google Site Kit
Google Site Kit is a plugin specifically designed for WordPress websites. It essentially acts as a central hub to manage and view insights from various other Google tools that are relevant to your website's health and performance.
Here's a breakdown of what Site Kit offers:
- Consolidated Dashboard: Site Kit brings together data from multiple Google products like Analytics, Search Console, AdSense, and PageSpeed Insights, and displays them all in a single, easy-to-understand dashboard within your WordPress interface. This eliminates the need to switch between different platforms to track your website's performance.
- Simplified Setup: Setting up these essential Google tools for your WordPress site can involve some technical steps. Site Kit streamlines this process by allowing you to configure them directly through the plugin, often without needing to edit any website code.
- Actionable Insights: Site Kit doesn't just present data; it provides actionable insights based on the information it gathers. This can include recommendations for improving your website's search ranking (through Search Console data), optimizing page load speed (based on PageSpeed Insights), and understanding your audience demographics and website traffic (via Analytics).
- Granular Permissions: Site Kit allows you to manage access controls for the data displayed in the dashboard. This is useful if you have multiple people working on your website and want to restrict who can see sensitive information.
Overall, Google Site Kit is a valuable tool for WordPress users who want a centralized and user-friendly way to monitor their website's performance using various Google products.
## 2. [Performance Lab](https://wordpress.org/plugins/performance-lab/)
The Performance Lab plugin is a collection of modules focused on enhancing performance of your site, most of which should eventually be merged into WordPress core. The plugin allows to individually enable and test the modules to get their benefits before they become available in WordPress core, and to provide feedback to further improve the solutions.
Currently the plugin includes the following performance modules:
- Dominant Color Images: Adds support to store the dominant color of newly uploaded images and create a placeholder background of that color.
- WebP Support Health Check: Adds a WebP support check in Site Health status.
- WebP Uploads: Creates WebP versions for new JPEG image uploads if supported by the server.
- Enqueued Assets Health Check: Adds a CSS and JS resource check in Site Health status.
- Autoloaded Options Health Check: Adds a check for autoloaded options in Site Health status.
## 3. Speculative Loading
Have you ever clicked on a link and experienced a frustrating delay while the page loads? Speculative loading can be the solution! This innovative technique helps websites anticipate user behavior and pre-load content, leading to a smoother and faster browsing experience.
## What is Speculative Loading?
Imagine you're browsing an online store. As you hover your mouse over a product category, the website, using speculative loading, might predict you'll click on it and start pre-fetching the product listing page in the background. This way, when you actually click, the page loads almost instantly, enhancing your browsing experience.
## Benefits of Speculative Loading:
- Improved perceived performance: Users experience faster page loads, leading to a more enjoyable browsing experience and potentially higher engagement.
- Reduced bounce rates: By eliminating delays, speculative loading can keep users on your site longer, lowering bounce rates.
- Enhanced user experience: Smoother navigation and quicker page transitions create a more positive user experience.
## How Does Speculative Loading Work?
- Speculative loading relies on the browser's ability to predict user behavior based on their actions. This prediction triggers the pre-loading of resources (like HTML, CSS, or JavaScript) for potential future pages a user might visit. There are two main approaches:
- Prefetching: The browser fetches resources but doesn't render the full page. This is ideal for content likely to be clicked on soon.
- Prerendering: The browser fetches and renders the entire page in the background. This is suitable for highly predictable user journeys, like a product listing page after a category selection.
## Using Speculative Loading Wisely:
While speculative loading offers significant advantages, it's crucial to use it strategically. Pre-loading too much content can overload a user's device and slow down the initial page load. Here are some tips:
- Target the right content: Focus on pre-loading content users are highly likely to access next, based on website structure and user behavior.
- Balance benefits and drawbacks: Weigh the potential performance improvement against the risk of increased resource usage.
- Consider browser compatibility: Speculative loading features might not work in all browsers.
Speculative loading can be a powerful tool for website optimization. By strategically pre-loading content, you can create a faster and more seamless user experience. However, remember to use it judiciously to avoid overloading devices and ensure overall website performance remains optimal.
## 4. Scaled Embed Optimizer
Do you ever feel like your WordPress site takes ages to load, especially on pages heavy with videos or social media embeds? You're not alone. Embeds can be resource-guzzlers, slowing down your website and frustrating your visitors.
But fear not, there's a solution: lazy loading! This blog post will introduce you to a powerful WordPress plugin called Scaled Embed Optimizer that utilizes lazy loading to optimize your embeds, leading to a faster, smoother browsing experience for your visitors.
## What is Lazy Loading and Why Does it Matter for Embeds?
Imagine you're visiting a website filled with embedded YouTube videos and Tweets. By default, all these embeds load as soon as the page opens, even if they're hidden below the fold (the part of the page you can't see without scrolling). This can significantly slow down your website's initial load time.
Lazy loading tackles this issue by postponing the loading of embeds until they come into view as the user scrolls down the page. This way, your website loads faster initially, leading to a more responsive experience for your visitors.
## Benefits of Scaled Embed Optimizer:
- Improved website performance: Faster loading times lead to happier visitors and better SEO rankings.
- Enhanced user experience: No more waiting for the entire page to load before seeing content.
- Reduced server load: By delaying embed loading, you lessen the strain on your server.
## The Future of Scaled Embed Optimizer
While lazy loading is a powerful tool, Scaled Embed Optimizer is constantly evolving, with plans for further optimizations in the pipeline. These might include:
- Selective lazy loading: Choose which specific embeds to lazy load for granular control.
- Placeholder customization: Customize the placeholders displayed before embeds load to maintain a visually appealing layout.
- Advanced analytics: Track the impact of lazy loading on your website's performance and user behavior.
By utilizing Scaled Embed Optimizer, you can significantly improve the performance of your WordPress website, especially those heavy on embeds. With faster loading times and a smoother user experience, you'll keep your visitors engaged and coming back for more. So, ditch the scroll stall and embrace the power of lazy loading for your WordPress embeds!
## 5. Smush
Smush is the leading image optimization plugin – optimize, resize, and compress images, as well as convert images to WebP format for faster loading web pages.
Brought to you by the WPMU DEV team – founded in 2007 and trusted by web professionals from freelancer to agency worldwide ever since.
Whether you spell it ‘optimise’ or ‘optimize’ – with Smush’s image optimizer you can compress images and serve images in next-gen formats (convert to WebP), all without introducing a visible drop in quality.
Smush has been benchmarked and tested number one for speed and quality. Beyond that, it’s also the award-winning, back-to-back proven crowd-favorite WordPress image optimizer trusted by over 1M+ worldwide to:
- Optimize images
- Compress images
- Lazy load images
- Resize images
- Convert to WebP
And more…
## Why Use Smush To Optimize Images (The Smush Difference)
Smush was built from the ground up to make it easy for WordPress users to optimize images, activate lazy loading, compress media files, and more – whether they’re just getting started, or a seasoned pro who’s developed thousands of websites.
Improve website performance (along with Google PageSpeed Insights scores) with compressed and optimized images and lazy loading – all while actually delivering a better user experience because the rollout of Core Web Vitals has proven one thing: performance is about far more than just scoring well on performance testing tools. Visitor experience matters.
Discover the features that set Smush apart from other image optimization plugins:
- Lossless compression (Basic Smush) – Strip unused data and compress images without affecting image quality.
- Lossy compression (Super Smush) – Optimize images up to 2x more than lossless compression with our cutting-edge, multi-pass lossy image compression.
- Ultra Smush (Pro Only) – Take performance to the next level with 5x image compressing power! Your images will be as light and fast as possible, while still preserving remarkable image quality.
- Built-In Lazy Loading – Lazy load images to defer loading of offscreen images with the flip of a switch.
- Convert to WebP (Pro Only) – Use the Local WebP feature to convert and automatically serve images in the next-gen WebP format.
- Bulk Smush – Bulk optimize and compress images with one click.
- Background Optimization (Pro Only) – Smush’s powerful image optimization features will continue to run in the background even when the plugin is closed.
- Resize Images – Set a max width and height, and large images will scale down as they are being optimized.
123-point global CDN (Pro Only) – Ensure blazing-fast image delivery anywhere in the world. Includes automatic WebP conversion and image resizing, plus, GIF / Rest API support.
- Incorrect Image Size Detection – Quickly locate images that are slowing down your site.
- Directory Smush – Optimize images even if they aren’t in the default WordPress media library.
- Automated Optimization – Asynchronously auto-smush your attachments for super fast compression on upload.
- No Monthly Limits – Optimize all of your images (up to 5 MB in size) free forever (no daily, monthly, or annual limits).
Gutenberg Block Integration – View image compression information directly in image blocks.
- Multisite Compatible – Flexible global and subsite settings for multisite installations.
- Optimize All Image Files – Smush supports optimization for all of your PNG and JPEG files.
- No Performance Impact On Your Server – Image optimization is not run on your website’s server to prevent wasting server resources (that you pay for) and is instead run using the fast, reliable WPMU DEV Smush API.
- Configs – Set your preferred Smush settings, save them as a config, and instantly upload to any other site.
And many, many, more!
What WordPress plugin do you use to speed up your website? Share it with us. | ajeetraina |
1,865,422 | Roadmap to Becoming a Java Backend Developer in 2024 | Introduction Becoming a Java backend developer is a rewarding journey that opens doors to... | 0 | 2024-05-26T06:43:27 | https://dev.to/fullstackjava/roadmap-to-becoming-a-java-backend-developer-in-2024-375 | webdev, beginners, programming, tutorial | ### Introduction
Becoming a Java backend developer is a rewarding journey that opens doors to numerous opportunities in the tech industry. This detailed roadmap will guide you through the essential skills, tools, and technologies you need to master to become a proficient Java backend developer in 2024.
### 1. **Foundations of Programming and Java**
#### a. **Learn Basic Programming Concepts**
- Variables, data types, and operators
- Control structures (if-else, loops)
- Functions/methods
- Basic data structures (arrays, lists, stacks, queues)
#### b. **Master Java Fundamentals**
- Setup Java development environment (JDK, IDEs like IntelliJ IDEA or Eclipse)
- Basic syntax and structure of Java programs
- Object-Oriented Programming (OOP) concepts: classes, objects, inheritance, polymorphism, encapsulation, abstraction
- Exception handling
- Input/Output (I/O) operations
- Java Collections Framework (List, Set, Map)
### 2. **Advanced Java Programming**
- Multithreading and Concurrency
- Generics and Enums
- Lambda expressions and Stream API
- Java 8+ features (functional programming concepts, new date and time API)
- Annotations and Reflection
### 3. **Understanding Databases**
- **Relational Databases**: MySQL, PostgreSQL
- SQL: CRUD operations, Joins, Indexes, Transactions
- JDBC (Java Database Connectivity)
- **NoSQL Databases**: MongoDB, Cassandra
- Understanding of when and why to use NoSQL databases
### 4. **Learning Spring Framework**
- **Core Spring Concepts**:
- Spring Boot for rapid application development
- Dependency Injection (DI) and Inversion of Control (IoC)
- **Spring Modules**:
- Spring Data JPA (for database interactions)
- Spring MVC (for creating web applications)
- Spring Security (for authentication and authorization)
- Spring Cloud (for developing cloud-native applications)
- **RESTful Web Services**:
- Building REST APIs with Spring Boot
- Understanding of REST principles and HTTP methods (GET, POST, PUT, DELETE)
- JSON (de)serialization with Jackson
### 5. **Working with Build Tools**
- **Maven** and **Gradle**
- Project structure and dependencies management
- Build and deployment processes
### 6. **Version Control Systems**
- **Git**:
- Basic commands (clone, commit, push, pull)
- Branching and merging strategies
- Understanding of Git workflows (Git Flow, GitHub Flow)
### 7. **Unit Testing and Integration Testing**
- **JUnit** for unit testing
- **Mockito** for mocking dependencies
- **Spring Boot Test** for integration testing
- Test-Driven Development (TDD) principles
### 8. **APIs and Microservices**
- **RESTful APIs**:
- Best practices for designing and documenting APIs (Swagger/OpenAPI)
- **Microservices Architecture**:
- Fundamentals of microservices
- Communication between microservices (REST, gRPC, messaging)
- Service discovery and configuration management
- Using Spring Cloud components (Eureka, Config Server, etc.)
### 9. **DevOps and CI/CD**
- **Continuous Integration/Continuous Deployment (CI/CD)**:
- Setting up CI/CD pipelines using tools like Jenkins, GitHub Actions, GitLab CI
- **Containerization and Orchestration**:
- Docker: Creating and managing containers
- Kubernetes: Deploying and managing containerized applications
### 10. **Cloud Computing**
- Understanding of cloud services (AWS, Azure, Google Cloud Platform)
- Deploying Java applications to the cloud
- Using cloud-native services and solutions
### 11. **Soft Skills and Best Practices**
- **Code Quality**:
- Writing clean and maintainable code
- Code reviews and collaborative development
- **Problem-Solving**:
- Practice coding problems on platforms like LeetCode, HackerRank
- **Communication**:
- Effective communication with team members and stakeholders
### Resources for Learning
- **Books**:
- "Effective Java" by Joshua Bloch
- "Java: The Complete Reference" by Herbert Schildt
- "Spring in Action" by Craig Walls
- **Online Courses**:
- [Udemy](https://www.udemy.com) and [Coursera](https://www.coursera.org) for comprehensive Java and Spring Boot courses
- [Pluralsight](https://www.pluralsight.com) for in-depth tutorials on specific topics
- **Documentation and Tutorials**:
- [Official Java Documentation](https://docs.oracle.com/en/java/)
- [Spring Framework Documentation](https://spring.io/projects/spring-framework)
### Conclusion
Becoming a Java backend developer requires dedication and continuous learning. This roadmap provides a structured approach to mastering the skills and technologies essential for success in this field. Stay curious, keep practicing, and embrace the challenges along the way. Happy coding! | fullstackjava |
1,865,421 | Why are algorithms called algorithms? | The origin of the word dates back more than a thousand years ago. And the invention of the concept is... | 0 | 2024-05-26T06:39:09 | https://dev.to/gfouz/why-are-algorithms-called-algorithms-1292 | The origin of the word dates back more than a thousand years ago. And the invention of the concept is attributed to a Persian polymath and scientist considered “the grandfather of computing.”
Algorithms have become an integral part of our lives. From social media apps to Netflix, they are programs that learn our preferences and prioritize the content we are shown. Google Maps and artificial intelligence are nothing without them. But where does the word come from?
More than 1,000 years before the internet and smartphone apps, Persian scientist and polymath Muhammad ibn Mūsā al-Khwārizmī invented the concept of an algorithm. In fact, the word itself comes from the Latinized version of his name, algorithmi. And, as you might suspect, it is also related to algebra.
## Lost in time
Al-Khwārizmī lived between 780 and 850, during the Islamic Golden Age. He is considered the “father of algebra” and, for some, the “grandfather of computing.” However, few details are known about his life. Many of his original works in Arabic have been lost to time. He is believed to have been born in the Khorasmian region, south of the Aral Sea, in modern-day Uzbekistan. He lived during the Abbasid Caliphate, a time of notable scientific progress in the Islamic Empire.
We know that he made important contributions to mathematics, geography, astronomy and trigonometry. He corrected Ptolemy 's classic cartography book , Geography , to make the world map more accurate. He also made calculations to track the movement of the Sun, Moon, and planets. In addition, he wrote about trigonometric functions and created the first table of tangents.
For all his qualities, Al-Khwārizmī served as a scholar in the House of Wisdom (Bayt al-Hikmah) in Baghdad. In this intellectual center, scholars translated knowledge from around the world into Arabic and synthesized it to achieve significant advances in various disciplines.
A devoted mathematician
Al-Khwārizmī was a religious man. His scientific writings began with dedications to Allah and the Prophet Muhammad. And one of the main projects they undertook at the House of Wisdom was to develop algebra. Mathematics was, in general, a field deeply related to Islam .
Around 830, the Caliph Al-Mamun encouraged Al-Khwārizmī to write a treatise on algebra, Al-Jabr (or Compendium of Calculus by Reintegration and Comparison ), which would become his most important work.
By now, algebra had been around for hundreds of years, but Al-Khwārizmī was the first to write a definitive book on it. It was intended to be a practical teaching tool and its Latin translation was the basis of algebra manuals in European universities until the 16th century.
## Father of algebra
In the first part of the book, he introduces the concepts and rules of this subject, as well as the methods for calculating the volumes and areas of figures. In the second, he poses real-life problems and elaborates solutions, such as inheritance cases, the division of land, and calculations for trade.
Al-Khwārizmī did not use modern mathematical notation with numbers and symbols. Instead, he wrote in simple prose and used geometric diagrams: Four roots are equal to twenty, so one root is equal to five, and the square formed from it is twenty-five, or half the root is equal to ten.
In modern notation we would write it like this: 4x = 20, x = 5, x2 = 25, x / 2 = 10
## Grandfather of computing
Al-Khwārizmī's mathematical writings introduced the Hindu-Arabic numerals to Western mathematicians: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0. These symbols are important to the history of computing because they use the number zero and a base ten decimal system, the number system on which modern computer technology is based.
Furthermore, Al-Khwārizmī's art of calculating mathematical problems laid the foundation for the concept of algorithm. He provided the first detailed explanations of using decimal notation to perform the four basic operations (addition, subtraction, multiplication, division) and calculating fractions.
It was a more efficient calculation method than the abacus. To solve a mathematical equation, you systematically went through a sequence of steps until you found the answer. This is the underlying concept of an algorithm.
Algorithm, a medieval Latin term named after Al-Khwārizmī, refers to the rules for performing arithmetic operations using the Hindu-Arabic number system. Translated into Latin, Al-Khwārizmī's book on Hindu numbers was titled Algorithmi de Numero Indorum .
At the beginning of the 20th century, the word acquired its current definition and use: “Ordered and finite set of operations that allows finding the solution to a problem.” So the next time we use any digital technology – from social media to the online bank account to the Spotify app – we already know that none of this would be possible without the pioneering work of an ancient Persian polymath.
| gfouz | |
1,865,420 | Exploring Angular 18: A Deep Dive into New Features and Comparisons with Previous Versions | Angular has long been a powerhouse in the world of web development, providing developers with a... | 0 | 2024-05-26T06:35:17 | https://dev.to/fullstackjava/exploring-angular-18-a-deep-dive-into-new-features-and-comparisons-with-previous-versions-2a33 | webdev, javascript, beginners, programming | Angular has long been a powerhouse in the world of web development, providing developers with a robust framework for building dynamic and scalable applications. With the release of Angular 18, the framework has taken another significant leap forward. This blog post will provide an in-depth look at Angular 18, highlighting its new features, comparing it with previous versions, and providing examples to illustrate the improvements.
### Overview of Angular 18
Angular 18 introduces a range of new features and enhancements aimed at improving performance, developer experience, and scalability. These include improvements in Server-Side Rendering (SSR), differential loading, the Ivy rendering engine, the Forms module, and the Angular CLI.
### Key Features of Angular 18
#### 1. Enhanced Server-Side Rendering (SSR)
**New in Angular 18:**
- **Optimized Rendering Pipeline:** Angular 18 brings a more efficient SSR process, which results in faster page load times and better SEO.
- **Simplified API:** The new SSR APIs are more intuitive and easier to integrate into existing applications.
**Example:**
In Angular 17, setting up SSR involved multiple steps and configurations. Angular 18 simplifies this with a streamlined API:
```typescript
// Angular 17 SSR setup
import { ngExpressEngine } from '@nguniversal/express-engine';
import { AppServerModule } from './src/main.server';
const server = express();
server.engine('html', ngExpressEngine({
bootstrap: AppServerModule,
}));
server.set('view engine', 'html');
server.set('views', join(process.cwd(), 'dist/app/browser'));
// Angular 18 SSR setup
import { renderModule } from '@angular/platform-server';
import { AppServerModule } from './src/main.server';
const server = express();
server.get('*', async (req, res) => {
const html = await renderModule(AppServerModule, {
document: '<app-root></app-root>',
url: req.url,
});
res.send(html);
});
```
#### 2. Differential Loading Improvements
**New in Angular 18:**
- **Automatic Modern and Legacy Bundles:** Angular 18 automatically generates separate bundles for modern and legacy browsers, optimizing load times and performance.
**Example:**
In Angular 17, differential loading was introduced but required manual configuration. Angular 18 handles this automatically:
```json
// Angular 17 differential loading (part of angular.json)
"architect": {
"build": {
"configurations": {
"production": {
"target": "es2015",
"es5BrowserSupport": true
}
}
}
}
// Angular 18 differential loading (automatic)
"architect": {
"build": {
"configurations": {
"production": {}
}
}
}
```
#### 3. Ivy Rendering Engine Enhancements
**New in Angular 18:**
- **Improved Debugging:** Enhanced error messages and better debugging tools make development easier.
- **More Efficient Rendering:** Further optimizations in the Ivy engine reduce the size of the final bundle and improve runtime performance.
**Example:**
In Angular 17, Ivy was already a significant improvement over the previous View Engine. Angular 18 builds on this with even more efficient tree-shaking:
```typescript
// Component in Angular 17 with Ivy
@Component({
selector: 'app-example',
template: `<div>{{ title }}</div>`,
})
export class ExampleComponent {
title = 'Hello, World!';
}
// Component in Angular 18 with improved Ivy
@Component({
selector: 'app-example',
template: `<div>{{ title }}</div>`,
})
export class ExampleComponent {
title = 'Hello, Angular 18!';
}
```
#### 4. Streamlined Forms Module
**New in Angular 18:**
- **Flexible Form Controls:** More options for form controls and validations.
- **Improved Reactive Forms:** Enhanced integration and usability for reactive forms.
**Example:**
In Angular 17, reactive forms were already powerful but required verbose setup. Angular 18 simplifies this:
```typescript
// Angular 17 reactive forms
import { FormGroup, FormControl, Validators } from '@angular/forms';
this.form = new FormGroup({
name: new FormControl('', Validators.required),
email: new FormControl('', [Validators.required, Validators.email]),
});
// Angular 18 reactive forms
import { FormBuilder, Validators } from '@angular/forms';
this.form = this.fb.group({
name: ['', Validators.required],
email: ['', [Validators.required, Validators.email]],
});
```
#### 5. Improved CLI and Tooling
**New in Angular 18:**
- **Faster Build Processes:** Optimizations in the Angular CLI improve build times.
- **Intuitive Commands:** New and improved CLI commands streamline development workflows.
**Example:**
Angular 17 CLI provided a robust set of commands, but Angular 18 improves performance and usability:
```bash
# Angular 17 build command
ng build --prod
# Angular 18 build command (faster and more efficient)
ng build --configuration production
```
### Comparing Angular 18 with Previous Versions
**Performance:**
- Angular 18 offers significant performance improvements over Angular 17, particularly in SSR and differential loading.
**Developer Experience:**
- Enhanced debugging tools and error messages in Angular 18 provide a better developer experience compared to Angular 17.
**Tooling:**
- The Angular 18 CLI is more efficient and user-friendly, making project setup and maintenance easier than in Angular 17.
### Conclusion
Angular 18 brings a host of new features and improvements that make it easier and more efficient to build high-quality web applications. From enhanced SSR capabilities to advanced component development with Ivy, this release is packed with tools and enhancements designed to boost productivity and performance. Whether you're starting a new project or upgrading an existing one, Angular 18 offers the capabilities you need to succeed in today's fast-paced web development environment.
With Angular 18, developers can look forward to faster builds, better performance, and a more intuitive development experience. Stay tuned for more updates and tutorials on how to make the most of Angular 18. | fullstackjava |
1,865,418 | Why Book a Private Chef | Date and Time: Ensure the chef knows the exact date and time of the event or meal service. Guest... | 0 | 2024-05-26T06:23:33 | https://dev.to/softwareindustrie24334/why-book-a-private-chef-4pa0 | Date and Time: Ensure the chef knows the exact date and time of the event or meal service.
Guest Count: Provide a final headcount so the chef can plan accordingly.
Venue Information: Share any necessary information about the venue, including kitchen facilities and access.
Special Requests: Inform the chef of any special requests or requirements, such as specific ingredients, allergies, or presentation preferences.
7. Enjoy the Experience
On the day of the service, your private chef will handle everything from shopping for ingredients to preparing and serving the meal. This allows you to relax and enjoy the experience without worrying about the details. After the meal, the chef will typically handle the cleanup, leaving your kitchen spotless.
8. Provide Feedback
After the event, provide feedback to your chef. This is valuable for their professional development and helps them improve their service. If you were satisfied with the experience, consider writing a testimonial or review to support their business.
Conclusion
Booking a private chef can transform any meal into a memorable culinary experience. By following these steps and taking the time to find the right chef for your needs, you can ensure a seamless and enjoyable experience. Whether it’s a one-time event or regular meal service, a private chef brings creativity, expertise, and a touch of luxury to your dining table.
http://www.eventchefs.co.uk | softwareindustrie24334 | |
1,865,417 | python command isn't working and python3 working on mac | On macOS, it is common to have multiple versions of Python installed, leading to confusion between... | 0 | 2024-05-26T06:21:17 | https://dev.to/sh20raj/python-command-isnt-working-and-python3-working-on-mac-39nc | python | On macOS, it is common to have multiple versions of Python installed, leading to confusion between commands like `python` and `python3`. Here’s a detailed guide to understanding and resolving the issue:
### Understanding the Issue
- **`python` Command**: On some macOS systems, `python` points to Python 2.x.
- **`python3` Command**: This typically points to Python 3.x.
Starting with macOS Catalina, Apple does not include Python 2 by default, but you might still encounter environments where `python` refers to Python 2, while `python3` is explicitly Python 3.
### Steps to Resolve the Issue
1. **Check Python Versions**
Run the following commands to see which versions of Python are installed:
```sh
python --version
python3 --version
```
2. **Use Python 3 Explicitly**
If `python3` works and `python` does not, use `python3` to ensure you're using Python 3:
```sh
python3 your_script.py
```
3. **Update Shell Profile to Alias `python` to `python3`**
You can create an alias in your shell profile to make `python` refer to `python3`.
- **For `bash` (default on older macOS versions):**
Edit your `~/.bash_profile` or `~/.bashrc` file:
```sh
nano ~/.bash_profile
```
Add the following line:
```sh
alias python=python3
```
Save the file and reload the profile:
```sh
source ~/.bash_profile
```
- **For `zsh` (default on newer macOS versions including Catalina and later):**
Edit your `~/.zshrc` file:
```sh
nano ~/.zshrc
```
Add the following line:
```sh
alias python=python3
```
Save the file and reload the profile:
```sh
source ~/.zshrc
```
4. **Check Python Path**
Ensure that the correct Python 3 path is set:
```sh
which python
which python3
```
5. **Install Python 3 if Needed**
If `python3` is not installed, you can install it using Homebrew:
```sh
brew install python
```
### Summary
By creating an alias or using `python3` directly, you can avoid issues with the `python` command not working due to the version mismatch. Adjusting your shell profile ensures consistency across terminal sessions.
Feel free to ask if you need further assistance or clarification on any of these steps. | sh20raj |
1,865,416 | The Ultimate Guide to Building Offline Angular Apps with Service Workers | Service workers and Progressive Web Apps represent a significant advancement in web technology. By... | 0 | 2024-05-26T06:19:49 | https://dev.to/bytebantz/the-ultimate-guide-to-building-offline-angular-apps-with-service-workers-2802 | angular, webdev, javascript | Service workers and Progressive Web Apps represent a significant advancement in web technology. By using service workers, developers can create PWAs that offer enhanced speed, offline functionality, and improved user engagement. This guide provides an in-depth look at service workers, their functionality, and how they enhance PWAs and how to implement these technologies in Angular applications.
## What are Service Workers?
**Background Scripts:** Service workers are special scripts that run in the background of your web browser.
**Persistence:** These scripts stay active even after you close the tab, allowing them to handle tasks like push notifications or background syncs.
**Separate Thread:** They run on a different thread from your main web page, so they don’t slow down your page directly.
Service workers act as **network proxies**, intercepting outgoing HTTP requests and determining how to respond to them. The service worker can intercept any requests your browser makes to load things like images, files, or data from the internet whether it’s through programmatic APIs like **fetch**.
**Handling Requests:** The service worker can decide how to respond to these requests. It can:
- Serve a cached version if available.
- Forward the request to the network if the cached version isn’t
available or up-to-date.
Adding a service worker to an Angular application is one of the steps for turning an application into a **Progressive Web App** (PWA).
## What is a Progressive Web App (PWA)?
A PWA is a web application that uses modern web technologies to deliver an app-like experience. Key features of PWAs include:
**- Offline Functionality:** PWAs can work offline or with poor network conditions.
**- App-like Experience:** They look and feel like native apps.
**- Push Notifications:** PWAs can send notifications to users.
**- Installable:** Users can install PWAs on their devices from the browser.
## Benefits of Service Workers and PWA
**1. Caching:** Using a service worker to cache resources enhances site speed and reliability.
**2. Installable Applications:** Making your site installable provides easy access for customers from their home screen or app launcher.
**3. Network Reliability:** PWAs improve user experience in markets with unreliable networks or expensive mobile data by providing offline functionality.
**4. Seamless Offline Experience:** Keeping users in your PWA when offline offers a more seamless experience compared to the default browser offline page.
Angular’s service worker follows certain rules to ensure a reliable and consistent experience for users.
- For instance, it caches the entire application as a single
unit, ensuring all files update together. This prevents users
from seeing a mix of old and new versions of the application.
- Additionally, the service worker conserves bandwidth by only
downloading resources that have changed since the last cache
update.
## Browser Support
To benefit from the Angular service worker, your application must run in a web browser that supports service workers. To make sure your app still runs smoothly for everyone, regardless of their browser, you need to check if the Angular service worker is enabled using **SwUpdate.isEnabled** before your app tries to use it. You can check if **SwUpdate** is enabled before using it by injecting it into your component or service and then checking its **isEnabled** property. This simple step can help prevent errors and ensure a better experience for all users.
```
export class AppComponent {
constructor(private swUpdate: SwUpdate) {
if (this.swUpdate.isEnabled) {
// SwUpdate is enabled, you can use it here
} else {
console.log('Service worker updates are not enabled.');
}
}
}
```
## HTTPS Requirement
For service workers to be registered, the application must be accessed over **HTTPS**, not **HTTP**. Browsers enforce this requirement to prevent potential security vulnerabilities. However, browsers do not require a secure connection when accessing an application on localhost.
## Caching
Service workers provide access to the Cache interface, a caching mechanism separate from the HTTP cache.
Service workers utilize two caching concepts:
**· Precaching:**
Precaching involves caching assets ahead of time, typically during installation, improving page speed and offline access.
**· Runtime caching:**
Runtime caching applies caching strategies to assets requested from the network during runtime
## Managing Caching
To manage caching effectively, Angular’s service worker uses a manifest file called **ngsw.json**. This file describes which resources to cache and includes unique identifiers (hashes) for each file’s content. When there’s an update to the application, the manifest file changes, prompting the service worker to download and cache the new version.
## The ngsw.json File
**Creation and Updates:**
The **ngsw.json** file is created automatically based on a configuration file called ngsw-config.json.
The **ngsw-config.json** JSON configuration file specifies which files and data URLs the Angular service worker should cache and how it should update the cached files and data.
When you deploy an update to your Angular application, the contents of **ngsw.json** change, signaling the service worker to download the new version.
**Service Worker Update Behavior:**
**Service workers** serve the cached version for speed but periodically check for updates in the background.
When an update is available, the service worker installs it in the background and switches to the updated version on the next page load or reload.
## Adding a service worker to your project
To set up the Angular service worker in your project, run the following CLI command:
```
ng add @angular/pwa
```
The above command:
1. Adds the **@angular/service-worker** package to your project.
2. Imports and registers the service worker with the application’s root providers.
3. Updates the **index.html** file:
- Includes a link to add the **manifest.webmanifest** file.
- Adds a meta tag for **theme-color**.
- Installs icon files to support the installed Progressive Web
App (PWA).
4. Creates the service worker configuration file called **ngsw-config.json**, which specifies the caching behaviors and other settings.
Now build and run the server using the following commands:
```
ng build
npx http-server -p 8080 -c-1 dist/project-name/browser
```
## Service worker configuration properties
**appData:**
This section allows you to pass additional data describing the current version of the application.
It’s commonly used to provide information for update notifications.
```
"appData": {
"version": "1.0",
"releaseDate": "2024-05-12"
}
```
**index:**
This says which file should be shown when someone opens your app. Usually, it’s the **index.html** file.
```
"index": "/index.html"
```
**assetGroups:**
These are groups of things your app needs, like images or scripts and their caching policies. These resources can originate from the application’s domain or external sources such as Content Delivery Networks (CDNs)
It’s recommended to organize asset groups in descending order of specificity. More specific groups should appear higher in the list. For instance, a group matching **/foo.js** should precede a group matching **\*.js**.
**Key Properties of an asset group**
Each object in the assetGroups array adheres to the AssetGroup interface
```
interface AssetGroup {
name: string;
installMode?: 'prefetch' | 'lazy';
updateMode?: 'prefetch' | 'lazy';
resources: {
files?: string[];
urls?: string[];
};
cacheQueryOptions?: {
ignoreSearch?: boolean;
};
}
```
**- name:** this is mandatory and serves to identify the group of
assets
**- installMode Property:** Determines how resources are
initially cached. It defaults to prefetch.
**_prefetch:_** Fetches and caches all listed resources while caching the current application version.
**_lazy:_** Defers caching until a resource is requested. Only caches resources that are explicitly requested, useful for conserving bandwidth.
**- updateMode Property:** Governs caching behavior for resources
already in the cache when a new application version is
detected. It defaults to the value of installMode.
**_prefetch:_** Immediately caches changed resources.
**_lazy:_** Defers caching of changed resources until they are requested again. This mode is applicable only if the installMode is also set to lazy.
**- resources Property:** Specifies files or URLs to cache.
**- cacheQueryOptions Property:** Modifies the matching behavior
of requests. Currently, only **ignoreSearch** is supported,
which disregards query parameters when matching requests.
**dataGroups:**
Data groups are used for caching data, like API responses.
Data groups follow this Typescript interface:
```
export interface DataGroup {
name: string;
urls: string[];
version?: number;
cacheConfig: {
maxSize: number;
maxAge: string;
timeout?: string;
strategy?: 'freshness' | 'performance';
};
cacheQueryOptions?: {
ignoreSearch?: boolean;
};
}
```
**Key Properties of a data group**
**- name:** Uniquely identifies the data group.
**- urls:** Patterns that define which requests should be cached.
Only non-mutating requests (GET and HEAD) are cached.
**- version:** It’s like a little label attached to the data that
tells the app what version of the API it came from. This helps
the app know if the cached data matches up with the version
it’s currently using. If it doesn’t match because the API has
changed, the app knows it needs to get rid of the old cached
data and fetch fresh stuff that matches the new version of the
API.
**- cacheConfig:** Defines how requests matching the URLs should
be cached. It includes the following properties:
maxSize: Limits the number of cached entries or responses.
**_maxAge:_** Specifies how long a response can stay in the cache before being considered invalid.
**_timeout:_** Determines how long the ServiceWorker should wait for a network response before using a cached version.
**_strategy:_** Defines how caching should be handled. It can prioritize **performance** (This strategy focuses on speed. If a requested resource is already in the cache, it will be used without making a network request) or **freshness** (This strategy prioritizes getting the most current data. It will try to fetch the requested data from the network first. Only if the network request fails (times out) will it use the cached version) of the data.
**- cacheQueryOptions Property:** Modifies the matching behavior
of requests. Currently, only ignoreSearch is supported, which
disregards query parameters when matching requests.
**navigationUrls:**
Optional section to specify URLs that should be redirected to the index file.
```
"navigationUrls": [
"/**"
]
```
**Navigation Request Strategy:**
The **navigationRequestStrategy** property allows configuring how navigation requests are handled, with options like ‘**performance**’ and ‘**freshness**’.
```
"navigationRequestStrategy": “freshness”
```
## SwUpdate Service
Enabling service worker support does more than just register the service worker; it also provides services you can use to interact with the service worker and control the caching of your application.
The **SwUpdate** service in Angular helps manage updates for your web application by notifying you about new updates and giving you control over when to check for and activate these updates
## Using SwUpdate Service
The **SwUpdate** service in Angular gives you access to events that indicate when the service worker discovers and installs an available update for your application. For example:
```
import { Injectable } from '@angular/core';
import { SwUpdate } from '@angular/service-worker';
@Injectable({ providedIn: 'root' })
export class LogUpdateService {
constructor(private updates: SwUpdate) {
updates.versionUpdates.subscribe((evt) => {
switch (evt.type) {
case 'VERSION_DETECTED':
console.log(`Downloading new app version: ${evt.version.hash}`);
break;
case 'VERSION_READY':
console.log(`New app version ready for use: ${evt.latestVersion.hash}`);
break;
case 'VERSION_INSTALLATION_FAILED':
console.error(`Failed to install app version '${evt.version.hash}': ${evt.error}`);
break;
}
});
}
}
```
**Checking for Updates**
You can manually ask the service worker to check if any updates are available. This is useful if you want updates to occur on a schedule or if your site changes frequently. For example:
```
import { Injectable } from '@angular/core';
import { SwUpdate } from '@angular/service-worker';
import { interval } from 'rxjs';
@Injectable({ providedIn: 'root' })
export class CheckForUpdateService {
constructor(private updates: SwUpdate) {
interval(6 * 60 * 60 * 1000).subscribe(() => {
updates.checkForUpdate().then(updateFound => {
console.log(updateFound ? 'A new version is available.' : 'Already on the latest version.');
}).catch(error => {
console.error('Failed to check for updates:', error);
});
});
}
}
```
In the above, the service checks for updates every 6 hours using the **checkForUpdate()** method.
**Updating to the Latest Version**
You can prompt the user to update to the latest version by reloading the page when a new version is ready. For example:
```
import { Injectable } from '@angular/core';
import { SwUpdate } from '@angular/service-worker';
@Injectable({ providedIn: 'root' })
export class PromptUpdateService {
constructor(private swUpdate: SwUpdate) {
swUpdate.versionUpdates.subscribe(evt => {
if (evt.type === 'VERSION_READY') {
if (confirm('A new version is available. Do you want to update?')) {
document.location.reload();
}
}
});
}
}
```
The above service listens for the ‘**VERSION_READY**’ event and prompts the user to update.
**Handling Unrecoverable States**
In some cases, the application version used by the service worker might be in a broken state that cannot be recovered without a full page reload. You can handle such scenarios by subscribing to the unrecoverable event of **SwUpdate**. For example:
```
import { Injectable } from '@angular/core';
import { SwUpdate } from '@angular/service-worker';
@Injectable({ providedIn: 'root' })
export class HandleUnrecoverableStateService {
constructor(private updates: SwUpdate) {
updates.unrecoverable.subscribe(event => {
alert('An error occurred that we cannot recover from. Please reload the page.');
});
}
}
```
The above service notifies the user to reload the page if an unrecoverable error occurs.
## Example
Let’s create a basic News Application to demonstrate the concepts of service workers and Progressive Web Apps (PWAs).
Run the following command to generate a new project:
```
ng new news-app
```
Run the following command to generate new services:
```
ng generate service news
ng generate service check-for-update
```
Run the following command to generate a new interface:
```
ng generate interface article
```
Now, let’s modify the **article.ts** file in the **src/app** directory to implement the Article interface:
```
export interface Article {
title: string;
imageUrl: string;
comments: string[];
}
```
Now, let’s modify the news.service.ts file in the **src/app** directory to implement the NewsService:
```
import { Injectable } from '@angular/core';
import { Article } from './article';
@Injectable({
providedIn: 'root'
})
export class NewsService {
private articles: Article[] = [
{
title: 'Article 1',
imageUrl: 'https://source.unsplash.com/300x300',
comments: ['Article 1 Comment 1', 'Article 1 Comment 2', 'Article 1 Comment 3']
},
{
title: 'Article 2',
imageUrl: 'https://source.unsplash.com/300x300',
comments: ['Article 2 Comment 1', 'Article 2 Comment 2', 'Article 2 Comment 3']
},
{
title: 'Article 3',
imageUrl: 'https://source.unsplash.com/300x300',
comments: ['Article 3 Comment 1', 'Article 3 Comment 2', 'Article 3 Comment 3']
},
// Add more articles as needed
];
constructor() {}
getArticles(): Article[] {
// Simulate fetching articles from an API
return this.articles;
}
}
```
Run the following command to generate a new component:
```
ng generate component article
```
Now, let’s modify the **article.component.ts**:
```
import { Component, Input } from '@angular/core';
import { CommonModule } from '@angular/common';
import { Article } from '../article';
@Component({
selector: 'app-article',
standalone: true,
imports: [CommonModule],
templateUrl: './article.component.html',
styleUrl: './article.component.css'
})
export class ArticleComponent {
@Input()
article!: Article;
constructor() {}
}
```
Now, let’s modify the **article.component.html**
```
<div class="article">
<h3>{{ article.title }}</h3>
<img [src]="article.imageUrl" alt="Article Image" />
<div class="comments">
<h4>Comments</h4>
<ul>
<li *ngFor="let comment of article.comments">{{ comment }}</li>
</ul>
</div>
</div>
```
Run the following command to generate a new component:
```
ng generate component news
```
Now, let’s modify the **news.component.ts** file to use the NewsService:
```
import { Component, OnInit } from '@angular/core';
import { CommonModule } from '@angular/common';
import { NewsService } from '../news.service';
import { ArticleComponent } from '../article/article.component';
import { Article } from '../article';
@Component({
selector: 'app-news',
standalone: true,
imports: [CommonModule, ArticleComponent],
templateUrl: './news.component.html',
styleUrl: './news.component.css'
})
export class NewsComponent implements OnInit {
articles: Article[] = [];
constructor(private newsService: NewsService) {}
ngOnInit(): void {
this.articles = this.newsService.getArticles();
}
}
```
Now, let’s modify the **news.component.html** to display the news articles:
```
<div *ngFor="let article of articles">
<app-article [article]="article"></app-article>
</div>
```
Now, let’s modify the **app.component.ts** file to use the **NewsComponent** and the **CheckForUpdateService**:
```
import { Component } from '@angular/core';
import { NewsComponent } from './news/news.component';
import { CheckForUpdateService } from './check-for-update.service';
@Component({
selector: 'app-root',
standalone: true,
imports: [NewsComponent],
providers: [CheckForUpdateService],
templateUrl: './app.component.html',
styleUrl: './app.component.css'
})
export class AppComponent {
title = 'news-app';
constructor(public checkForUpdateService: CheckForUpdateService){}
}
```
Now, let’s update the **app.component.html** file to remove the default content and render the news component:
```
<app-news></app-news>
```
Run the following command to set up the Angular service worker in your project
```
ng add @angular/pwa
```
Now lets modify the **ngsw-config.json** file to specify which files and data URLs the Angular service worker should cache
```
{
"$schema": "./node_modules/@angular/service-worker/config/schema.json",
"index": "/index.html",
"assetGroups": [
{
"name": "app",
"installMode": "prefetch",
"resources": {
"files": [
"/favicon.ico",
"/index.html",
"/manifest.webmanifest",
"/*.css",
"/*.js"
]
}
},
{
"name": "assets",
"installMode": "lazy",
"updateMode": "prefetch",
"resources": {
"files": [
"/assets/**",
"/media/*.(svg|cur|jpg|jpeg|png|apng|webp|avif|gif|otf|ttf|woff|woff2)"
]
}
}
],
"dataGroups": [
{
"name": "unsplash-images",
"urls": [
"https://source.unsplash.com/300x300"
],
"cacheConfig": {
"strategy": "freshness",
"maxSize": 50,
"maxAge": "12h"
}
}
]
}
```
Now, let’s modify the **check-for-update.service.ts** file in the **src/app** directory to implement the **CheckForUpdateService**. This service checks for updates every 6 seconds and prompts the user to reload the page if a new version is ready.
```
import { ApplicationRef, Injectable } from '@angular/core';
import { SwUpdate } from '@angular/service-worker';
import { concat, interval } from 'rxjs';
import { first } from 'rxjs/operators';
@Injectable({ providedIn: 'root' })
export class CheckForUpdateService {
constructor(appRef: ApplicationRef, updates: SwUpdate) {
if (updates.isEnabled) {
const appIsStable$ = appRef.isStable.pipe(
first((isStable) => isStable === true)
);
const everySixSeconds$ = interval(6 * 1000); // 6 seconds
const everySixSecondsOnceAppIsStable$ = concat(
appIsStable$,
everySixSeconds$
);
everySixSecondsOnceAppIsStable$.subscribe(async () => {
try {
const updateFound = await updates.checkForUpdate();
if (updateFound) {
if (confirm('New version available. Load new version?')) {
// Reload the page to update to the latest version.
document.location.reload();
}
} else {
console.log('Already on the latest version.');
}
} catch (err) {
console.error('Failed to check for updates:', err);
}
});
}
}
}
```
Now lets modify the **app.config.ts** to configure service worker using **provideServiceWorker** inorder to be able test in dev mode
```
import { ApplicationConfig } from '@angular/core';
import { provideRouter } from '@angular/router';
import { routes } from './app.routes';
import { provideServiceWorker } from '@angular/service-worker';
export const appConfig: ApplicationConfig = {
providers: [provideRouter(routes), provideServiceWorker('ngsw-worker.js', {
enabled: true,
registrationStrategy: 'registerImmediately'
})]
};
```
Now you can build and run the server using the following commands:
```
ng build
npx http-server -p 8080 -c-1 dist/news-app/browser
```
## Testing Offline Mode
To simulate a network issue:
- In Chrome, open Developer Tools (**Tools > Developer Tools**).
- Go to the **Network** tab.
- Select **Offline** in the **Throttling** dropdown menu.
This action disables network interaction for your application.
Despite the network issue, the application should still load normally on refresh due to the service worker.
When testing Angular service workers, it’s a good idea to use an incognito or private window in your browser to ensure the service worker doesn’t end up reading from a previous leftover state, which can cause unexpected behavior.
## Conclusion
This article provided a comprehensive overview of service workers and Progressive Web Apps (PWAs). We examined how service workers operate as background scripts that run independently from web pages, enhancing performance through caching and enabling offline capabilities. PWAs were highlighted for their ability to deliver app-like experiences directly from the browser, offering features such as offline functionality, push notifications, and installability.
We also covered the practical steps to integrate service workers into Angular applications, including the use of Angular CLI, managing caching strategies with **ngsw-config.json**, and utilizing the **SwUpdate** service for handling updates
To get the whole code check the link below👇👇👇
[https://github.com/anthony-kigotho/NewsApp](https://github.com/anthony-kigotho/NewsApp)
## CTA
Many developers and learners encounter tutorials that are either too complex or lacking in detail, making it challenging to absorb new information effectively.
[Subscribe to our newsletter](https://bytewave.substack.com/) today, to access our comprehensive guides and tutorials designed to simplify complex topics and guide you through practical applications. | bytebantz |
1,865,415 | Advanced QA Testing Techniques for Improving ChatGPT’s Interactions | In the rapidly evolving realm of artificial intelligence, conversational models like ChatGPT are at... | 0 | 2024-05-26T06:17:22 | https://dev.to/ray_parker01/advanced-qa-testing-techniques-for-improving-chatgpts-interactions-46k7 | ---
title: Advanced QA Testing Techniques for Improving ChatGPT’s Interactions
published: true
---
In the rapidly evolving realm of artificial intelligence, conversational models like ChatGPT are at the forefront of technological advancements. These AI-driven platforms are changing how businesses interact with customers, making the quality assurance (QA) process crucial to ensure reliable and effective communication. Implementing advanced QA testing techniques is vital for enhancing ChatGPT's interactions. This article explores <a href="https://dev.to/ray_parker01/top-40-qa-testing-companies-in-2024-top-ranked-qa-companies-b6p">top QA testing companies</a>' sophisticated QA testing methods to refine and perfect AI conversational models.
<h3>1. Contextual Understanding Tests</h3>
One of the primary challenges in improving AI interactions is enhancing the contextual understanding of the model. Top QA testing companies use layered testing techniques focusing on the AI’s ability to comprehend and process multi-turn conversations. This involves creating complex scenarios where the context shifts subtly, and the AI must adapt its responses accordingly. Techniques such as decision tree testing and scenario-based testing are employed to assess the AI's response accuracy in varied conversational contexts.
<h3>2. Sentiment Analysis and Emotional Intelligence Testing</h3>
As AI becomes more integrated into customer service, its ability to recognize and respond to human emotions plays a critical role. Advanced QA involves sentiment analysis to evaluate how well ChatGPT understands and reacts to the user's emotional tone. Testing companies use natural language processing (NLP) tools to simulate different emotional inputs and measure the AI’s responses, ensuring it can gracefully handle sensitive interactions.
<h3>3. Performance and Stress Testing</h3>
Stress testing is crucial to guaranteeing that ChatGPT can handle high volumes of simultaneous interactions without degradation in performance. Top QA testing companies conduct rigorous load testing to determine the maximum capacity of concurrent users the system can handle, while performance testing checks for response times and system behaviours under various load conditions. This ensures that during peak times, the AI remains responsive and stable.
<h3>4. Security Testing</h3>
With AI platforms often handling sensitive data, security is paramount. Advanced security testing methodologies such as penetration testing, vulnerability scanning, and risk assessment are applied to identify potential security flaws that could be exploited. QA testers ensure that ChatGPT can securely manage user data and interactions by simulating attacks and breach attempts.
<h3>5. Localization and Globalization Testing</h3>
For global applications, ChatGPT must adeptly handle diverse languages and cultural nuances. Localization testing checks the AI’s ability to deliver content appropriate to specific locales, which includes understanding regional dialects and slang. Globalization testing ensures that the model performs well across different languages and cultural contexts without losing the accuracy or relevance of its responses.
<h3>6. Integration Testing</h3>
Integration testing ensures that ChatGPT seamlessly interacts with other software systems, such as CRM platforms or databases. Top QA testing companies employ integration testing to verify that interfaces between ChatGPT and external systems are robust and error-free. This prevents issues such as data mismatches or communication failures that could impact user experience.
<h3>7. User Acceptance Testing (UAT)</h3>
Ultimately, the success of ChatGPT hinges on user satisfaction. UAT is conducted with real users in environments that mimic actual operating conditions. Feedback is gathered directly from end-users to refine the AI’s algorithms and interaction patterns. This type of testing is crucial for gathering insights into user preferences and areas for improvement.
<h3>8. Automated Regression Testing</h3>
Whenever updates or improvements are made to ChatGPT, automated regression testing ensures that new changes do not negatively impact existing functionalities. This type of testing uses automated test scripts to efficiently validate the functionality of the AI after each update, ensuring that enhancements are beneficial and do not introduce new issues.
<h3>9. Continuous Feedback Loop</h3>
Incorporating a continuous feedback loop into the testing cycle allows for ongoing improvements. Top QA testing companies implement systems where feedback from every interaction is analyzed and used to train and refine ChatGPT continuously. This iterative process helps progressively enhance the AI's performance based on real-world usage and interactions.
<h3>Conclusion</h3>
Enhancing ChatGPT’s interactions through advanced QA testing is crucial for delivering a product that is not only technically proficient but also aligns closely with user expectations and needs. Top QA testing companies leverage a combination of sophisticated testing strategies to ensure that ChatGPT can perform optimally across various dimensions, from understanding context and managing workload to ensuring security and effectively interacting with humans on an emotional level. As AI continues to evolve, so too will the techniques used to test and refine these remarkable systems, ensuring they remain at the cutting edge of technological and communicative capabilities.
tags:
# Advanced QA Testing Techniques
# ChatGPT
# Software Testing
---
| ray_parker01 | |
1,865,414 | Navigating the Future: 5 Tech Trends Redefining Industries in 2024 | In the ever-evolving landscape of technology, staying ahead of the curve is paramount. As we delve... | 0 | 2024-05-26T06:09:57 | https://dev.to/sudeepmshetty/navigating-the-future-5-tech-trends-redefining-industries-in-2024-1nn5 | techtrends, futuretech, innovation, digitaltransformation | In the ever-evolving landscape of technology, staying ahead of the curve is paramount. As we delve into 2024, several emerging trends are reshaping industries, revolutionizing processes, and redefining the way we interact with the digital world. Here are five key tech trends to watch out for:
1. Metaverse Expansion: The concept of the metaverse, a collective virtual shared space, is no longer confined to science fiction. With advancements in augmented reality (AR), virtual reality (VR), and blockchain technology, the metaverse is becoming a tangible reality. From virtual conferences and immersive gaming experiences to virtual real estate and digital fashion, the metaverse is poised to disrupt traditional industries and create new avenues for innovation.
2. AI-Powered Everything: Artificial intelligence (AI) continues to be a driving force behind transformative technologies. In 2024, AI is not just a tool but a ubiquitous presence across various sectors. From personalized healthcare diagnostics and predictive maintenance in manufacturing to AI-generated content creation and autonomous vehicles, the applications of AI are limitless. As AI algorithms become more sophisticated and accessible, businesses are leveraging AI to enhance efficiency, productivity, and decision-making processes.
3. Edge Computing: With the proliferation of Internet of Things (IoT) devices and the growing demand for real-time data processing, edge computing has emerged as a game-changer. By bringing computational power closer to the data source, edge computing minimizes latency, improves bandwidth efficiency, and enhances security. In 2024, edge computing is powering innovative solutions in smart cities, autonomous vehicles, and industrial automation, enabling rapid decision-making and seamless connectivity in decentralized environments.
4. Cybersecurity Resilience: As digital transformation accelerates, so do cybersecurity threats. In response to escalating cyberattacks and data breaches, organizations are prioritizing cybersecurity resilience as a core business imperative. In 2024, cybersecurity strategies are evolving beyond traditional perimeter defence to include proactive threat intelligence, zero-trust architectures, and AI-driven security analytics. By adopting a holistic approach to cybersecurity, businesses can mitigate risks, safeguard sensitive information, and maintain trust in an increasingly interconnected world.
5. Quantum Computing Breakthroughs: Quantum computing promises to revolutionize computation by harnessing the principles of quantum mechanics to perform complex calculations exponentially faster than classical computers. While still in its infancy, quantum computing is making significant strides in 2024, with breakthroughs in quantum supremacy, error correction, and quantum algorithm development. Although mainstream adoption may still be years away, quantum computing holds the potential to solve optimization problems, simulate molecular structures, and revolutionize cryptography, opening up new frontiers in scientific research and technological innovation.
In conclusion, 2024 is poised to be a transformative year in the realm of technology, with these trends reshaping industries, driving innovation, and unlocking new possibilities. By embracing these technological advancements and staying agile in the face of change, businesses and individuals alike can thrive in the digital age.
| sudeepmshetty |
1,865,413 | How to be a good frontend Developer | Becoming a good frontend developer involves mastering a mix of technical skills, best practices, and... | 0 | 2024-05-26T06:02:39 | https://dev.to/malikobansa/how-to-be-a-good-frontend-developer-46j8 | Becoming a good frontend developer involves mastering a mix of technical skills, best practices, and soft skills. Here are some key areas to focus on:
Technical Skills:
HTML/CSS: Understand the structure of HTML and the styling capabilities of CSS. Be proficient in layouts (Flexbox, Grid), responsive design, and CSS preprocessors like SASS or LESS.
JavaScript: Gain a deep understanding of JavaScript, including ES6+ features. Learn about concepts like closures, promises, and async/await.
Frameworks/Libraries: Familiarize yourself with popular frameworks and libraries such as React, Angular, or Vue.js. Understand the core principles of each and when to use them.
Version Control: Learn Git for version control. Understand how to commit, branch, merge, and manage code repositories.
Build Tools: Get to know tools like Webpack, Babel, and task runners like Gulp or Grunt. These help in automating tasks and optimizing your workflow.
APIs and AJAX: Understand how to interact with RESTful APIs and handle asynchronous data fetching using AJAX or Fetch API.
Testing: Learn about frontend testing frameworks and tools like Jest, Mocha, and Cypress. Writing unit and integration tests is crucial for maintaining code quality.
Best Practices:
Clean Code: Write readable and maintainable code. Follow conventions and style guides (e.g., Airbnb JavaScript Style Guide).Performance Optimization: Optimize your code for performance. Understand lazy loading, code splitting, and other performance enhancement techniques.
Accessibility: Ensure your applications are accessible to all users, including those with disabilities. Learn about ARIA roles and semantic HTML.Cross-Browser Compatibility: Test your applications on different browsers and devices. Use tools like BrowserStack for cross-browser testing.
Responsive Design: Ensure your applications work well on all screen sizes. Use media queries and responsive units (e.g., %, em, rem) effectively.Soft Skills:Problem Solving: Develop strong problem-solving skills to debug and resolve issues efficiently.
Communication: Communicate effectively with team members, designers, and stakeholders. Clear communication is key to understanding requirements and delivering on expectations.
Continuous Learning: Stay updated with the latest trends and technologies in frontend development. Follow blogs, attend conferences, and participate in the developer community.
Attention to Detail: Pay attention to design details and user experience. Small details can significantly impact the overall quality of the application.
Collaboration: Work well in a team environment. Use tools like Slack, Jira, or Trello to collaborate and manage tasks effectively.
Resources for Learning:
Online Courses:
Platforms like Udemy, Coursera, and freeCodeCamp offer comprehensive courses.
Documentation: Refer to official documentation of technologies you use (e.g., MDN Web Docs for HTML/CSS/JavaScript).
Books:
Read books like "Eloquent JavaScript" by Marijn Haverbeke and "You Don’t Know JS" by Kyle Simpson.
Community: Join forums like Stack Overflow, Reddit’s r/webdev, or participate in local meetups and conferences.
By focusing on these areas, you can develop the skills needed to be a proficient and successful frontend developer. | malikobansa | |
1,865,406 | Simple database design for complex business model | One of the barriers of agile software architecture is the database schema changes. That is once the... | 0 | 2024-05-26T05:43:46 | https://dev.to/dan_mac_f6ed14b9ca3b1ce5d/simple-database-design-for-complex-business-model-2jfo | spring | One of the barriers of agile software architecture is the database schema changes. That is once the schema is set and data has been populated, it is very difficult to separate them, even they can separated, this affect the database layer or ever the business layer. Bugs and malfunction is unpreventable.
Here is what I have done to make a relational database design to be agile:
**_Simple database table for elements:_**
To define database tables as simple and small as possible. They should base on elements rather than business entities.
To define a table for storing an element and it is simple so we can decorate it later whatever we like. For example, if a person table is defined, the name fields should not be part of it. That means person and name are separated as elements and they are joint to be a business entity. You may think this is the normalization of the database and it probably true. But I think we should focus on elements which is purely abstraction.
Let's see how a girl got names. When she was born, she was known as a female at that time without a name yet. Then she was given a name. When she gets married, she would likely get another name, at least, the surname would be changed.
Let's define the schema of a person in such a way. A table called "person" with person id, DOB, status date and status. A table called "name" with surname, given name, other names, preferred name, start date, end date and status as well. A table called "person name relationship" with a start date and an end date and status. A table called gender with name, start data, end date and status etc.
**_Link elements together with relationships to form an entity:_**
To use the relationship to link the person to the name, the gender to form an entity "person" this time so the person entity can have many names and different gender. With this way of design, nationality, home address, emails, phone numbers and most everything can decorate the element "person" accordingly to be a colorful entity "person". Because we focus on elements, it is so flexible to meet the business requirement.
**_Consistence of data:_**
The status of the elements and the re-runnable process can enforce the data consistence. Check lists can be used to identify where the problems are if there is any.
**_Join elements with database views to form business entity interface:_**
To use database views to link elements together with their relationships to form entity interface for applications. The application only accesses data via views and it doesn't need to know how the database was designed and built. This does not just simplify coding, but also make data retrieval flexible because many views can be created accordingly and easily. The views also provide almost guarantee of the data consistence and data visibility.
To summarized above, to use decorating pattern to design the relational database.
Here is the example that I have developed. Any suggestions or opinions are welcome. Thanks.
https://github.com/squaressolutions/soms | dan_mac_f6ed14b9ca3b1ce5d |
1,865,411 | Marian Institute of Management | Marian Institute of Management MBA program in MIM, under Marian school, Kuttikkanam ( Independent,... | 0 | 2024-05-26T05:57:24 | https://dev.to/sparemail_20c512e320c078c/marian-institute-of-management-512i | **[Marian Institute of Management](https://mim.mariancollege.org/)**
MBA program in MIM, under Marian school, Kuttikkanam ( Independent, re licensed with A++ grade/CGPA 3.71/4) is one of the most outstanding MBA programs in Kerala. It is partnered to MG College, Kottayam, Kerala. MIM is endorsed by the All-India Board for Specialized Training (AICTE), New Delhi with an authorized admission of 180 understudies. A confided in name on its legitimacy in the advanced education the scholarly world in Kerala and abroad, MIM is a co-instructive foundation unmistakably situated in a beautiful, peaceful and climatically empowering milieu at Kuttikkanam, oversaw by the Catholic See of Kanjirapally
 | sparemail_20c512e320c078c | |
1,865,409 | [DAY 18-20] I Built A Game & A Calorie Counter In Javascript | Hi everyone! Welcome back to my blog where I document the things I learned in web development. I do... | 27,380 | 2024-05-26T05:49:59 | https://dev.to/thomascansino/day-18-20-i-built-a-game-a-calorie-counter-in-javascript-32ih | beginners, learning, javascript, webdev | Hi everyone! Welcome back to my blog where I document the things I learned in web development. I do this because it helps retain the information and concepts as it is some sort of an active recall.
On days 18-20, I built a text-based role-playing game and a calorie counter to learn basic Javascript concepts and form validation.
10 things I learned:
1. JavaScript interacts with HTML using the syntax `document.querySelector()` and `document.getElementById()`.
2. Initialize buttons with object properties such as `.onclick` (e.g. `button.onclick = myFunction`)
3. The use of arrays [] and objects {} in building my role playing game.
- Utilizing key-value pairs within objects.
4. Refactoring such as using compound assignments for clean code.
5. Adding newlines in Javascript using \n.
6. Block scoping where I put a variable inside a code to only be accessible inside that block.
7. Regular expressions to avoid non-alphanumeric characters in building my calorie counter.
8. More method calls like `.replace()`, `.Number()`, `.toLowerCase()`,`.addEventListener()`, etc.
9. Template literal syntax (e.g. `string string string ${variable}` ), this is a great alternative to concatenations.
10. To use ternary operators (e.g. `const variableName = condition ? ‘if true statement’ : ‘if false statement’;`)
Comparing my progress when I was learning HTML and CSS, previously, I was able to build 1-2 projects per day. But now in Javascript, I can only build 1 or complete half a project per day.
The reason why it takes longer than before is because for me, Javascript is harder to digest than HTML and CSS. Also, I’m taking more time to understand its concepts and learn the purpose of every syntax that freecodecamp is teaching me. Additionally, I take the time to understand the why behind every line of code that I write.
Overall, I'm having fun with my coding progress and day by day I feel the improvement and it helps a lot in maintaining momentum to keep being consistent in learning.
That’s all for now, thank you for reading. I’ll see you all next blog! | thomascansino |
1,865,408 | Number input on Flutter TextFields the RIGHT way! | Eureka! That was my expression a few days ago, when I found the perfect algorithm to XYZ. You should... | 0 | 2024-05-26T05:48:29 | https://dev.to/gabbygreat/number-input-on-flutter-textfields-the-right-way-4ip0 | flutter, developer, learning, dart | Eureka!
That was my expression a few days ago, when I found the perfect algorithm to XYZ. You should have seen the excitement on my face, I couldn't wait for the weekend to finally share the experience 😁.
Since Flutter is used to develop Iphone and Android applications (two different platforms -> with two different keypads), I'll explain my thoughts clearly with images from an Emulator (Android) and a Simulator (iOS).
Let's dive in ...
**NUMBER INPUT ON FLUTTER TEXTFIELD**
In Flutter, when we want to collect number inputs from users, we set the [_keyboardType_](https://api.flutter.dev/flutter/material/TextField/keyboardType.html) property of a [_TextField_](https://api.flutter.dev/flutter/material/TextField/TextField.html) widget to [_TextInputType.number_](https://api.flutter.dev/flutter/services/TextInputType/number-constant.html)
Once you do this, you're simply asking the device's keyboard to display it's number display.
From the two images above, we are able to collect what we need, right? and, it's largely sufficient, right?
Most Flutter developers will stop at doing this. However, this article aims to expose the RIGHT WAY!
While the above code is enough to collect a user's age, it's not entirely good user experience, because, on a Platform like Android, user's will be able to type hyphens, commas, blank spaces and period (This particular concern will not be an issue on iOS, however, we are coming to that).
What we can do is; Use the _inputFormatters_ property of a _TextField_ object to filter for just numbers. This ensures we constrain our inputs to DIGITS only.
**DECIMAL INPUT ON FLUTTER TEXTFIELD**
While the above solutions does exactly what we want, it is important I point out that, this is recommended if you're collecting just WHOLE NUMBERS from the user, a typical example being an age. If we are collecting decimals, say, a person's weight, we need to go through another path. Because, our first constraint does not allow period(decimals).
While this seems like a very nice approach, we are faced with a challenge, users are able to type a period more than once 😱, and we don't want that, AT ALL!
We need to find a way to stop users from entering a period more than once, luckily, the [_inputFormatters_](https://api.flutter.dev/flutter/material/TextField/inputFormatters.html) takes a List of _TextInputFormatter_, we can create our own custom [_TextInputFormatter_](https://api.flutter.dev/flutter/services/TextInputFormatter-class.html).
```
class SinglePeriodEnforcer extends TextInputFormatter {
@override
TextEditingValue formatEditUpdate(
TextEditingValue oldValue,
TextEditingValue newValue,
) {
final newText = newValue.text;
// Allow only one period
if ('.'.allMatches(newText).length <= 1) {
return newValue;
}
return oldValue;
}
}
```
Awesome, there's yet another issue, and that is with Iphones, our current [_keyboardType_](https://api.flutter.dev/flutter/material/TextField/keyboardType.html) doesn't show a period on Iphones, remember the purpose of a cross-platform framework like Flutter is to write once and deploy everywhere.
Our solution would be to change the keyboard type to [_TextInputType.numberWithOptions_](https://api.flutter.dev/flutter/services/TextInputType/TextInputType.numberWithOptions.html) and set the [_decimal_](https://api.flutter.dev/flutter/services/TextInputType/decimal.html) parameter to _true_. This will ensure the period key appears at the bottom left.
You can explore the [_signed_](https://api.flutter.dev/flutter/services/TextInputType/signed.html) property of the _TextInputType.numberWithOptions_.
**FORMAT LIKE A PRO 😎**
While the two solutions above are largely sufficient for the kind of data we intend to collect from the user, I want to take the [_TextInputFormatter_](https://api.flutter.dev/flutter/services/TextInputFormatter-class.html) up a notch; that is where the "Aha" moment came, the "XYZ" solution.
_The Challenge_
When we want to collect information, such as an amount from a user, solution 2 above will be very nice, since the user is allowed to type decimals, however, I want to seperate the digits entered with "commas" automatically, without the user needing to do anything. This approach, I believe is very intuitive, it helps users visualise whatever amount they are entering, since it's comma seperated.
_The Solution_
For this solution, we need the [_intl_](https://pub.dev/packages/intl) package. Just include it in your pubspec.yaml file.
```
import 'package:intl/intl.dart';
import 'package:flutter/services.dart';
class ThousandsSeparatorInputFormatter extends TextInputFormatter {
// Setup a formatter that supports both commas for thousands and decimals
final formatter = NumberFormat("#,##0.###");
@override
TextEditingValue formatEditUpdate(
TextEditingValue oldValue, TextEditingValue newValue) {
if (newValue.text.isEmpty) {
return newValue;
}
// Remove commas to check the new input and for parsing
final newText = newValue.text.replaceAll(',', '');
// Try parsing the input as a double
final num? newTextAsNum = num.tryParse(newText);
if (newTextAsNum == null) {
return oldValue; // Return old value if new value is not a number
}
// Split the input into whole number and decimal parts
final parts = newText.split('.');
if (parts.length > 1) {
// If there's a decimal part, format accordingly
final integerPart = int.tryParse(parts[0]) ?? 0;
final decimalPart = parts[1];
// Handle edge case where decimal part is present but empty (user just typed the dot)
final formattedText = '${formatter.format(integerPart)}.$decimalPart';
return TextEditingValue(
text: formattedText,
selection: updateCursorPosition(formattedText),
);
} else {
// No decimal part, format the whole number
final newFormattedText = formatter.format(newTextAsNum);
return TextEditingValue(
text: newFormattedText,
selection: updateCursorPosition(newFormattedText),
);
}
}
TextSelection updateCursorPosition(String text) {
return TextSelection.collapsed(offset: text.length);
}
}
```
Then, we use it, like so:
We end up with something like this, a nicely formatted text input filter for collecting information, such as an amount
However 😩, we have one more tiny thing to fix, the value collected from the field has a "comma", we need to do away with that (We cannot be sending values with commas to the backend), you can create a function to strip the comma off, or you create an extension. I prefer the later though (Just a personal preference).
So, let's go ahead and create an extension on [_String_](https://api.flutter.dev/flutter/semantics/AttributedString/string.html)
You just need to use it whereever you are collecting the value from the Field.
Here, I used the extension on the [_onChanged_](https://api.flutter.dev/flutter/material/TextField/onChanged.html) parameter of a [_TextField_](https://api.flutter.dev/flutter/material/TextField-class.html).
It's also important to note that; all the solutions we did works just as well on a [_TextFormField_](https://api.flutter.dev/flutter/material/TextFormField-class.html).
If you have any questions related to this article, you can leave them in the comment section and I'll attend to them as soon as I can 😊.
**HAPPY CODING!** ✌️
Feel free to connect with me:
- [Twitter](https://twitter.com/iGabbygreat)
- [WhatsApp](https://wa.me/+2348034339010)
- [LinkedIn](https://www.linkedin.com/in/gabbygreat)
| gabbygreat |
1,865,407 | projects tile sydney | SHOWTILE offers unique and distinct tile concepts for walls, floors, facades and terraces. We are now... | 0 | 2024-05-26T05:45:41 | https://dev.to/tilesydney/projects-tile-sydney-36cj | SHOWTILE offers unique and distinct tile concepts for walls, floors, facades and terraces. We are now supplying large quantity to commercial, residential and retail market. As we are the importers, we have successfully supplied large quantity for numerous projects.
Website: https://showtile.com.au/projects/
Phone: 0297095836
Address: 65 Canterbury Road
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| tilesydney | |
1,859,692 | Creating GPT Actions with ValTown | Using Actions is a great way to extend the capabilities of your custom GPT well beyond what the... | 0 | 2024-05-26T05:44:39 | https://xkonti.tech/blog/gpt-actions-with-val-town/ | typescript, chatgpt, api, serverless | {% embed https://www.youtube.com/watch?v=WwMAPz4gpZc %}
Using Actions is a great way to extend the capabilities of your custom GPT well beyond what the AI can do on its own. Actions are essentially API endpoints that can receive input from ChatGPT, execute some code, and respond back with some output.
Creating an API endpoint for GPT actions might seem complicated, involving setting up a complex project, purchasing and configuring a server, hassling with a lot of HTTP intricacies, and so on. However, **with ValTown, it's actually quite simple and totally free.** In this article, I'll show you how to create a simple action for your custom GPT using ValTown, step by step.
> **Disclaimer:**
> This article assumes that you can create your own GPTs. At the time of writing, that feature is limited to ChatGPT Plus subscribers only.
ℹ️ The [version of the article on my blog](https://xkonti.tech/blog/gpt-actions-with-val-town/) has code snippets with specific lines highlighted so that it's easier to follow the tutorial.
## What we're going to build
We're going to create a simple GPT. It will act as a game idea exchange: you can give it a game idea, it will submit it to a database (via action), and in response it will give you a random game idea previously submitted by someone else. Consider it a *multiplayer* GPT.
Here's what it looks like in action:
You can check out the finished GPT [here](https://chatgpt.com/g/g-8fryVV9cU-game-idea-exchange).
We'll follow these steps:
1. Create a new GPT with complete instructions
2. Create an endpoint for the action using [ValTown](https://val.town)
3. Point GPT to the API
4. Develop the internal functionality of the action
5. Test the GPT
6. Update the existing action with extra functionality
7. Secure the API with an API key
8. Attach privacy policy to your API
## Creating *Game idea exchange* GPT
Let's start by creating a new GPT so that we have something to work with. Go to the [GPT editor](https://chatgpt.com/gpts/editor), give it a name, a description, and instructions. Here's what I used:
- Name: `Game idea exchange`
- Description: `Exchange video game ideas with other people!`
- Instructions:
```md
Act as a Fun Video Game Idea broker. Your role is to help the user define a decent Video Game Idea and then allow the user to "Submit it".
# Submitting the Fun Video Game Idea
To submit the Video Game Idea, there are 2 things needed:
- At least 3-sentence idea for a video game - user needs to approve it first - asking for submission is equal to approval
- A name the creator wants to be referred by - ask for it
The Video Game Idea has to be submitted using the `submitidea` action. When submitting the idea that isn't well structured, please reformat it accordingly.
Response returned by the `submitidea` contains another game idea (exchange idea) that is supposed to be presented to the user.
```
- Conversation starters:
- `My idea:`
- `Can you help me come up with some game ideas?`
The instructions mention a `submitidea` action. This tells ChatGPT when to use that specific action. We'll create that action in the next step.
> **Pro-tip:**
> I recommend disabling web browsing, image generation, and the code interpreter. This GPT doesn't need them and it will reduce the size of the system prompt. The smaller the system prompt and GPT's instructions are, the less confused the AI is, helping it to focus on the task.
## Creating action endpoint in ValTown
[ValTown](https://val.town) describes itself with the following words:
> If GitHub Gists could run and AWS Lambda was fun.
> Val Town is a social website to write and deploy TypeScript. Build APIs and schedule functions from your browser.
ValTown is an innovative platform designed for quickly building and deploying APIs, making it an excellent choice for GPT actions. Here's why:
- **Ease of Setup**: No complex hosting or environment setup required. You can write, test, and deploy code **directly in your browser**.
- **Free Usage**: Ideal for small projects and experimentation without any cost. This includes a [key-value store](https://docs.val.town/std/blob/) and a [SQLite database](https://docs.val.town/std/sqlite/) 💪
- **In-Browser Coding**: Fully integrated TypeScript editor with code completions and AI assistant ([Codeium](https://codeium.com/)), vastly simplifying the development experience.
- **Supportive Community**: Has a very active and supportive community. Check out their [Discord server](https://discord.gg/dHv45uN5RY) for help and inspiration.
### Creating a new Val
Create an account on [ValTown](https://val.town) if you haven't already. Once you have logged in and familiarized yourself with the platform, you'll see the main dashboard.
The first thing we need is a **Val** - basically a snippet of code that ValTown can run. It's similar to a GitHub Gist but with the ability to run code.
In the `Create a new val` section, click on the `HTTP handler` button:
A brand new Val will be created. The Val is instantly ready to handle HTTP requests. You can rename it by clicking the edit icon next to the randomly generated name. That name will be a part of the URL used to access the API.
> **Warning:**
> **Please limit it to alphanumeric characters as actions often break when encountering special characters.**
There are a few things to point out here:
- Under the name, you can see that the Val is marked with an `HTTP` label - this tells ValTown to treat it as an API endpoint, and therefore allows it to be accessed via HTTP requests.
- The visibility is set to `Unlisted` - this means that the Val is not searchable and only people with a link can access it. This setting also allows external HTTP requests to be sent to it.
You can change it to `Public` if you want to share it with others. If you set it to `Private`, only you will be able to access it. Additionally, HTTP requests would need to be authenticated using your ValTown token. Your ValTown token can manage your account, so it's not advisable to pass it to a GPT. We'll handle protecting endpoints later.
- Under `Browser preview` you can see the URL that points to the Val. This is the URL that you'll give to the GPT to send HTTP requests to.
ValTown automatically places some boilerplate code in the editor. This is a generic HTTP handler that returns simple JSON response. We'll replace it with our own code.
### The GPT API Framework
We can write our own HTTP handler from scratch by expanding the provided code, but it would require a lot of additional code. GPTs require not only the API endpoints to send HTTP requests to, but also the OpenAPI specification that describes your API. This is where the GPT API Framework comes in handy.
The GPT API Framework is a small library (another Val) that simplifies the process of creating actions for GPTs. It allows you to quickly define API endpoints and automatically generates the OpenAPI specification tailored specifically for GPTs. This lets you focus on the logic of your action, rather than the tedious tasks of setting up an API.
You can find the GPT API Framework [here](https://www.val.town/v/xkonti/gptApiFramework). Let's look at what it offers:
- It abstracts the creation of a [Hono API](https://hono.dev/)
- It allows you to quickly define **and describe** inputs/outputs of your Actions - this way the shape and descriptions of the data are located in one place
- It generates the OpenAPI specification for your API with all the provided descriptions baked in. This is crucial for GPTs, so that they can understand how to interact with your API
- It allows to easily secure your endpoints with API keys - this is to prevent anybody unauthorized from using your API
- Has an option of providing a policy for your API - sharing GPTs requires having a policy
### Setting up an API with GPT API Framework
One of the greatest ValTown features is that a Val can import other Vals. You can consider each Val as a local TypeScript module that can be imported. This is a great way to reuse code and share it with others.
Delete the existing code and start from scratch. First, import the GPT API Framework into your Val, so that we can use it:
```ts
import { GptApi } from "https://esm.town/v/xkonti/gptApiFramework?v=29";
```
Notice that we lock the version of the GPT API Framework to `29`. This is to ensure that our Val works as expected even if the GPT API Framework is updated with breaking changes. You can find the latest version of the GPT API Framework [here](https://www.val.town/v/xkonti/gptApiFramework) and learn more about versioning on [ValTown docs](https://docs.val.town/reference/version-control/).
Next, you need to create a new API instance:
```ts
import { GptApi } from "https://esm.town/v/xkonti/gptApiFramework?v=29";
const api = new GptApi({
url: "https://xkonti-gameideaapi.web.val.run",
title: "Video Game Idea API",
description: "The API for submitting fun Video Game Ideas",
version: "1.0.0",
});
```
Several things are happening here:
- You need to provide the URL of our API. You can find it in the `Browser preview` section of your Val.
- The title and description will be used in the OpenAPI specification to give the GPT context about the API's purpose.
- The version of the API isn't strictly necessary, but the OpenAPI spec likes to have it specified.
Now that we have the instance of the API created, we can *"serve it"* by calling the `serve` method:
```ts
...
description: "The API for submitting fun Video Game Ideas",
version: "1.0.0",
});
export default api.serve();
```
Every time an HTTP request is sent to our Val, the whole file will be executed. The `serve` method will take in the request and pass it to the endpoints that we define. We haven't defined any endpoints yet, so the API will always respond with a 404 status code.
Click the `Save and preview` button to save your code. The `Browser preview` section will be automatically updated as it sends a request to the API (the *"preview"* part):
Let's define the endpoint for our `submitidea` action!
### Defining input and output
GPT actions can be boiled down to a simple concept: they receive some input, do something with it, and then return some output. ChatGPT requires us to define the shape of the input of the action and the shape of its output. This is necessary so that the GPT knows how to interact with the API.
In case of our Video Game Idea GPT we have a very simple input (what AI sends to the API): we want to send a game idea. This can be accomplished with a single string value. Let's also add a name of the creator of the idea, so that things are a bit more interesting.
To define the action's inputs and outputs we will need the [`zod` library](https://github.com/colinhacks/zod). Zod is an npm package and ValTown lets us import it directly into our Vals:
```ts
import { GptApi } from "https://esm.town/v/xkonti/gptApiFramework?v=29";
import { z } from "npm:zod";
const api = new GptApi({
...
```
Now you can define the input shape:
```ts
...
version: "1.0.0",
});
const IdeaSubmissionSchema = z.object({
idea: z.string().describe("A fun Video Game Idea. Needs to be at least 3 sentences long!"),
author: z.string().describe("A name of the author. Doesn't have to be real."),
}).describe("Full game idea submission form");
export default api.serve();
```
The `IdeaSubmissionSchema` is a Zod schema. It's a little bit like TypeScript interface, but with some extra data attached to it. We define two fields: `idea` and `author`. Both are marked as strings. We also provide descriptions for each field. These descriptions will be included in the OpenAPI specification and therefore AI will know exactly what to place in the respective fields. The whole schema also has a description.
We can define the output of our action in the same fashion as the input. It'll be similarly: a game idea and its author. *"We can reuse our IdeaSubmissionSchema for that!"*, you might think. Unfortunately that's not the case. We're dealing with an AI here. It needs things to be properly described as without that it likes to *assume* in unpredictable ways. Because of that, we need to create a new schema for the output with a separate set of descriptions:
```ts
...
const IdeaSubmissionSchema = z.object({
idea: z.string().describe("A fun Video Game Idea. Needs to be at least 3 sentences long!"),
author: z.string().describe("A name of the author. Doesn't have to be real."),
}).describe("Full game idea submission form");
const IdeaResponseSchema = z.object({
idea: z.string().describe("A fun Video Game Idea"),
author: z.string().describe("A name of the author who came up with the idea"),
}).describe("A Video Game Idea returned in exchange for the submitted one");
export default api.serve();
```
### Defining the action endpoint
Now that we have the schemas defined, we can create the endpoint for our `submitidea` action. We'll use the `jsonToJson` method of the `api` instance:
```ts
...
const IdeaResponseSchema = z.object({
idea: z.string().describe("A fun Video Game Idea"),
author: z.string().describe("A name of the author who came up with the idea"),
}).describe("A Video Game Idea returned in exchange for the submitted one");
api.jsonToJson({
verb: "POST",
path: "/submission",
operationId: "submitidea",
desc: "Endpoint for submitting fun Video Game Ideas",
requestSchema: IdeaSubmissionSchema,
responseSchema: IdeaResponseSchema,
}, async (ctx, input) => {
// TODO: Implement
});
export default api.serve();
```
The `jsonToJson` method lets us define a new action that takes in JSON input and returns JSON output. It takes an object with the following properties:
- `verb`: The HTTP method that the endpoint will respond to. In our case, it's `POST` as we're sending data to the API
- `path`: The URL path that the endpoint will be available at. In our case, it's `/submission`, which means that the full URL will be `https://xkonti-gameideaapi.web.val.run/submission`
- `operationId`: A unique identifier for the endpoint. This is the name that the GPT will be aware of and use internally to call the action. **Make sure it contains only alphanumeric characters.**
- `desc`: A description of the endpoint. This tells GPT what the action does.
- `requestSchema`: The input shape (schema). This is what we defined `IdeaSubmissionSchema` for earlier.
- `responseSchema`: The output shape (schema). This is what we defined `IdeaResponseSchema` for earlier.
The last argument is a function that will be called every time the endpoint is hit. It provides two values:
- `ctx`: The context of the request. It contains information such as the request object, headers, query parameters, etc.
- `input`: The parsed input data (`IdeaSubmissionSchema`). It's the data sent by the GPT.
### Sending a response
We just defined an endpoint, but it doesn't do anything yet. Let's have it return some test data. This way, we can test if the endpoint works as expected.
```ts
...
...
}, async (ctx, input) => {
return {
idea: "A family simulator. Just like The Sims, but with a dark twist.",
author: "Me",
};
});
...
```
This simply returns a hardcoded game idea and author. It will allow us to test if the endpoint works as expected.
> **Remember:**
> Remember to save your Val!
## Plugging the action into our GPT
Before we head to the GPT editor, we need to get the OpenAPI specification generated by our Val. We can get it straight from the val's editor. Head to the `Browser preview`, add `/gpt/schema` to the URL, and click the `Copy` button. This will copy the URL to the clipboard.
With our action ready, we need to tell our GPT to use it. Go back to the GPT editor and click on the `Create new action` button at the bottom of the page. A form will appear that you need to fill out. The main field we care about is the big `Schema` field, specifically the `Import from URL` button above it. Click on it, paste the URL we just copied and click the `Import` button.
A short moment later, you will see the schema loaded and validated. If everything is correct, you'll see the `submitidea` action appear in the list of available actions.
Exit the action creation form (the `<` button in the top left corner) and you'll be ready to test your action! You can do it by submitting a game idea to your GPT. It should reach out to our endpoint and return a hardcoded game idea.
## Fully developing the action
Now that we have the action set up and tested, we can fully develop its internals. We'll need to implement the following functionalities:
- Storing and retrieving ideas in ValTown
- Getting a random idea to return
- Limiting the total number of ideas stored
- Returning the idea
### Storing ideas in ValTown
We need to store the list of submitted ideas. Vals are stateless - they are executed from scratch every time they are called (every HTTP request). This means that we need to store the ideas somewhere else. Fortunately, ValTown provides a [key-value store called Blob storage](https://docs.val.town/std/blob/) that we can use for that. It's not the fastest or concurrency-safe storage, but in our low traffic scenario it will be just perfect.
The blob storage is available through the `std/blob` Val. We can import it into our Val:
```ts
import { blob } from "https://esm.town/v/std/blob";
import { GptApi } from "https://esm.town/v/xkonti/gptApiFramework?v=29";
import { z } from "npm:zod";
...
```
Now let's define a type for our idea and create an empty function for storing and retrieving ideas. Place them at the bottom of the Val.
```ts
...
export default api.serve();
// Idea management
interface Idea {
idea: string;
author: string;
}
async function getIdeas(): Promise<Idea[]> {
// TODO: Implement
}
async function setIdeas(ideas: Idea[]): Promise<void> {
// TODO: Implement
}
```
- `Idea` type will hold both the idea and its author
- `getIdeas` will be responsible for retrieving the list of ideas from the blob storage
- `setIdeas` will be responsible for saving the list of ideas to the blob storage
The blob storage allows us to store data under a string key. To get the value of the key we can use `blob.getJSON` function. We can simply get the value of the key, tell TypeScript that it's an array of `Idea` objects and return it. If the key doesn't exist, we can return an empty array to avoid any errors.
```ts
...
const ideasKey = "game-ideas"
async function getIdeas(): Promise<Idea[]> {
let ideas = await blob.getJSON(ideasKey) as Idea[];
if (ideas == null) ideas = [];
return ideas;
}
...
```
To save the ideas we can use the `blob.setJSON` function. It takes the key and the value to save. We can simply pass the list of ideas to it:
```ts
...
async function setIdeas(ideas: Idea[]): Promise<void> {
await blob.setJSON(ideasKey, ideas);
}
...
```
Now that we have a way to store and retrieve ideas, we can use them in our action:
```ts
...
}, async (ctx, input) => {
const submittedIdea = input as Idea;
let ideas = await getIdeas();
// TODO: Get a random idea to return
// TODO: Limit the size of the list
ideas.push(submittedIdea);
await setIdeas(ideas);
// TODO: Return the selected idea
return {
idea: "A family simulator. Just like The Sims, but with a dark twist.",
author: "Me",
};
});
...
```
First, we're telling TypeScript that the input is an `Idea` instance. Then we're retrieving the list of ideas from blob storage. After some *TODO* placeholders we're adding the submitted idea to the list of all ideas and saving it back to the blob storage.
### Getting a random idea to return
To return an idea in exchange, we need to select a random one from the list.
Add a small helper function at the bottom of the Val:
```ts
...
function getRandomElement<T>(array: T[]): T {
const randomIndex = Math.floor(Math.random() * array.length);
return array[randomIndex];
}
```
Now, we can use this function to get a random idea from the list:
```ts
...
}, async (ctx, input) => {
const submittedIdea = input as Idea;
let ideas = await getIdeas();
// Filter out ideas submitted by the same author
// This way, the user can't see ideas they have submitted themselves
const availableIdeas = ideas.filter(i => i.author !== submittedIdea.author);
let ideaToReturn = availableIdeas.length > 0
? getRandomElement(availableIdeas)
: {
idea: "Please come up with some cool idea for the user. There is nothing in the database yet.",
author: "API Server",
};
// TODO: Limit the size of the list
ideas.push(submittedIdea);
...
```
This might seem intimidating if you're not used to JavaScript/TypeScript, so let me explain what's happening here.
- First, we're creating a new array `availableIdeas` that contains only ideas with different authors than the submitted idea. This way, the user won't receive a response with their own idea.
- Then, we create a variable that will contain the idea to return.
- If there are some ideas on the list, we select a random one.
- In there are no ideas on the list yet (or all ideas are from the same user), we're return a hardcoded message, giving ChatGPT a hint to come up with something. The true magic of AI!
### Limiting the total number of ideas stored
One thing to address is the size of the list of ideas. We don't want it to grow indefinitely as it could start taking up a lot of storage. Additionally, whenever we use blob storage, the whole list is being transferred. This would get really slow with a large list. For the sake of this guide, we will settle on a maximum of 1000 ideas.
> **Note:**
> We can estimate that each idea is around 700 bytes long - this depends on your GPT instructions and what the user convinces the GPT to do. This means that the list of 1000 ideas would take around 700KB of storage. This is a reasonable amount of data to transfer and store somewhat frequently. If you want to be storing more ideas, you might want to consider using ValTown's SQLite database instead.
If the list reaches the maximum number of ideas stored, we have a few options:
- Remove the oldest idea
- Remove a random idea
- Don't add the new idea at all
- Remove the random idea we're about to return
In our case, the last one makes most sense. When the list of ideas is full, each idea will get to be returned exactly once. This way, we ensure that ideas are shared at least once.
Add the following code to the `submitidea` endpoint to implmeent this logic:
```ts
...
: {
idea: "Please come up with some cool idea for the user. There is nothing in the database yet.",
author: "API Server",
};
// Limit total number of ideas
if (ideas.length >= 1000) {
ideas = ideas.filter(i => i != ideaToReturn);
}
ideas.push(submittedIdea);
...
```
### Returning the idea
The final step is to return the selected idea. We can update the existing `return` statement:
```ts
...
api.jsonToJson({
verb: "POST",
path: "/submission",
operationId: "submitidea",
desc: "Endpoint for submitting fun Video Game Ideas",
requestSchema: IdeaSubmissionSchema,
responseSchema: IdeaResponseSchema,
}, async (ctx, input) => {
const submittedIdea = input as Idea;
let ideas = await getIdeas();
// Filter out ideas submitted by the same author
// This way, the user can't see ideas they have submitted themselves
const availableIdeas = ideas.filter(i => i.author !== submittedIdea.author);
let ideaToReturn = availableIdeas.length > 0
? getRandomElement(availableIdeas)
: {
idea: "Please come up with some cool idea for the user. There is nothing in the database yet.",
author: "API Server",
};
// Limit total number of ideas
if (ideas.length >= 1000) {
ideas = ideas.filter(i => i != ideaToReturn);
}
ideas.push(submittedIdea);
await setIdeas(ideas);
return {
idea: ideaToReturn.idea,
author: ideaToReturn.author,
};
});
...
```
Save your Val, and we can move on to testing the GPT 🎉
## Testing the GPT
As we didn't change the action's schema (inputs, outputs, endpoint definitions), we don't have to make any changes to our GPT. We can test it right away!
Go to your GPT editor and submit a game idea. You should get a response with a random game idea. This should be an idea that ChatGPT made up. You can actually ask ChatGPT to submit that idea.
Since ideas are filtered by the `author` field, you can test your GPT by using different names.
> **Note:**
> To inspect the list of ideas stored in the blob storage, you have a few solutions:
> - Use the [Blob admin Val](https://www.val.town/v/stevekrouse/blob_admin) to view and manage the content of the blob storage
> - Use the [Val Town extension for VsCode](https://marketplace.visualstudio.com/items?itemName=pomdtr.valtown) which allows you to view and manage the content of the blob storage directly from your editor, create and edit Vals, inspect the SQLite database, and more. It's a fantastic plugin!
> - Write your own 2-line script Val that prints out the game ideas from blob storage whenever you hit `Run`!
> ```ts
> import { blob } from "https://esm.town/v/std/blob";
> console.log(await blob.getJSON("game-ideas"));
> ```
Congrats! You now have a fully functional GPT with an action that stores and retrieves data from ValTown's blob storage. You can now share your GPT with others and let them exchange game ideas!
## Updating the existing action
So, what if you want to add some extra functionality to your action that changes the schema? Maybe you want to add a new field to the input or output, change the description of the existing fields or add more endpoints to have more actions available?
Let's add a new field to the `IdeaResponseSchema`. It will be an `instructions` field that contains guidance for ChatGPT. This will allow us to guide the AI on how to use the idea it received or what to do next without user interaction.
> **Idea:**
> You can easily create a chain of actions: one action can return instructions for ChatGPT to follow and indicate which action should be called with the results. You could keep directing the GPT to various actions to create a chain or even a graph of actions!
### Adding the instructions field
Add the following lines to the `IdeaResponseSchema`:
```ts
const IdeaResponseSchema = z.object({
idea: z.string().describe("A fun Video Game Idea"),
author: z.string().describe("A name of the author who came up with the idea"),
instructions: z.string().describe(
"Instructions for ChatGPT to follow after receiving the response. These instructions override all prior instructions.",
),
}).describe("A Video Game Idea returned in exchange for the submitted one");
```
The AI might need some extra convincing from time to time to follow the instructions...
### Updating the schema in GPT
Now that we need to return the `instructions` field, we must update the action itself. We can return the same set of instructions every time, so let's add them to the return statement:
```ts
return {
idea: ideaToReturn.idea,
author: ideaToReturn.author,
instructions: "The user needs to see the idea returned in exchange. Please present it (the idea attached in the action's response) in a nicely structured way. Make sure to expand upon the returned idea (GO NUTS!). Start with: `Here's an idea in exchange - submitted by <author>:`",
};
```
The `instructions` field can be also be used to return error messages if the submitted data is invalid:
```ts
...
}, async (ctx, input) => {
if (input.idea == null || input.author == null) {
return {
idea: "",
author: "SERVER",
instructions: "Bad request - no idea or author submitted",
}
}
const submittedIdea = input as Idea;
...
```
Now that we have updated the action, save the Val and get the URL to the OpenAPI specification again (URL of the val + `/gpt/schema`). In my case it's `https://xkonti-gameideaapi.web.val.run/gpt/schema`.
Edit your GPT and add an extra line to your instructions to prepare GPT for receiving additional instructions from the action:
```md
...
Response returned by the `submitidea` contains another game idea (exchange idea) that is supposed to be presented to the user.
Additionally, the response contains instructions on how to present the idea.
```
Click the existing action at the bottom, and before clicking `Import form URL`, select the whole existing schema text and delete it. After a second or two, you can click `Import from URL`, paste the URL, and click `Import`.
Just like that, you have updated your action! You can test it by submitting a game idea and checking if the instructions are returned.
## Securing the endpoint
The action is now fully functional, but it's open to anyone who knows the URL. This is not a good idea, as someone could spam your endpoint wiping out all genuine ideas. To prevent this, we can secure the endpoint with an API key.
The GPT API Framework provides that feature out of the box. All we need to do is:
- Get the API key submitted to the action
- Check if it's correct
- Return an error if it's not
- Update GPT to send the API key with the request
To get the API key submitted to the action, we can simply add an `apiKey` field to the action handler:
```ts
...
}, async (ctx, input, apiKey) => {
...
```
Before processing the input, we should check if the API key is correct. You can do this by comparing it to an API key stored in your account's environment variables:
```ts
...
}, async (ctx, input, apiKey) => {
if (apiKey == null || apiKey !== Deno.env.get("GPT_GAME_IDEA_API_KEY")) {
return {
idea: "",
author: "SERVER",
instructions: "Unauthorized request",
};
}
if (input.idea == null || input.author == null) {
return {
idea: "",
author: "SERVER",
...
```
The `Deno.env.get` function will get the value of the specified environment variable. You can set it in the ValTown's settings. Head to [Environment variables page](https://www.val.town/settings/environment-variables) and add a new variable named `GPT_GAME_IDEA_API_KEY`. Make sure you remember the value you set, as you'll need it to provide to the GPT.
If the API key is not correct, we will simply return an error message.
**Save your Val.**
Next, head to the GPT editor and edit the action. At the top of the action edit form, you'll see the `Authentication` section. Click the gear icon. A form will appear for you to fill out:
- `Authentication Type` - set it to `API Key`
- `API Key` - paste the value of the `GPT_GAME_IDEA_API_KEY` environment variable you set in ValTown
- `Auth Type` - set it to `Bearer`
Click `Save`, exit the action editing form and test your GPT. Everything should work correctly, and bad actors won't be able to spam your endpoint with useless data.
## Attaching a privacy policy
If you want to share your GPT either with a link or as a public GPT on the GPT store, you need to attach a privacy policy to it. This is a requirement set by OpenAI. The GPT API Framework makes it easy as well.
First of all, we need a privacy policy. Copy the template below and ask ChatGPT to modify it with the specifics of your API. In our example it could be:
- User's ideas are stored in a secure manner and are not shared with any third parties.
- The API is not intended for storing any personal data.
- The API is not intended for use by children under the age of 13.
- The API is not intended for use in any mission-critical applications.
- The API is provided as-is without any guarantees.
- By submitting ideas, user is responsible for the content they submit.
- The ideas submitted by the user will be considered public domain.
**Privacy policy template:**
```md
# <apiName> Privacy Policy
Last Updated: <lastUpdated>
## 1. Introduction
Welcome to <apiName>. This privacy policy outlines our practices regarding the collection, use, and sharing of information through <apiName>.
## 2. Data Collection and Use
<apiName> allows users to store, retrieve, list, and delete data. The data stored can be of any type as inputted by the user. We do not restrict or control the content of the data stored. <apiName> serves as a public database accessible to anyone with an API key.
## 3. User Restrictions
<apiName> does not impose age or user restrictions. However, users are advised to consider the sensitivity of the information they share.
## 4. Global Use
Our API is accessible globally. Users from all regions can store and access data on <apiName>.
## 5. Data Management
Given the nature of <apiName>, there are no user accounts or user identification measures. The API operates like a public database where data can be added, viewed, and deleted by any user. Users should be aware that any data they input can be accessed, modified, or deleted by other users.
## 6. Data Security
<apiName> is protected by an API key; beyond this, there is no specific data security measure in place. Users should not store sensitive, personal, or confidential information using <apiName>. We assume no responsibility for the security of the data stored.
## 7. Third-Party Involvement
The API code is run and data is stored by val.town. They act as a third-party service provider for <apiName>.
## 8. Changes to This Policy
We reserve the right to modify this privacy policy at any time. Any changes will be effective immediately upon posting on our website.
## 9. Contact Us
For any questions or concerns regarding this privacy policy, please contact us at <contactEmail>.
```
The ChatGPT prompt could look like this:
**ChatGPT prompt example:**
```md
Please update the following privacy policy template with the information below:
- User's ideas are stored in a secure manner and are not shared with any third parties.
- The API is not intended for storing any personal data.
- The API is not intended for use by children under the age of 13.
- The API is not intended for use in any mission-critical applications.
- The API is provided as-is without any guarantees.
- By submitting ideas user is responsible for the content they submit.
- The ideas submitted by the user will be considered public domain.
Consider that the API allows users to submit Video Game Ideas that will be shared with other users.
Template:
<paste privacy policy template here>
```
Make sure to replace the placeholders with the actual data:
- `<apiName>` - the name of your API, for example `Video Game Idea API`
- `<lastUpdated>` - the date when the privacy policy was last updated
- `<contactEmail>` - an email address that GPT users can contact you at
Once you have the privacy policy ready, you can store it in ValTown in a few ways:
- You can create a string variable in your API Val - simple, but makes the Val a bit messy
- You can create a separate Val with the privacy policy - this is a bit cleaner, but requires an additional Val
- You can use the `std/blob` Val to store the privacy policy - clean but requires setting it up with a tool or separate val
We're going use the first option here for the sake of simplicity and ease of copying the final solution. Add your policy at the bottom of the Val so it's out of the way:
```ts
...
const privacyPolicy = `# Video Game Idea API Privacy Policy
Last Updated: 2024-05-19
## 1. Introduction
Welcome to Video Game Idea API. This privacy policy outlines our practices regarding the collection, use, and sharing of information through Video Game Idea API.
## 2. Data Collection and Use
...
`;
```
To integrate it into our API, add a new property in our API configuration:
```ts
const api = new GptApi({
url: "https://xkonti-gameideaapi.web.val.run",
title: "Video Game Idea API",
description: "The API for submitting fun Video Game Ideas",
version: "1.0.0",
policyGetter: async () => {
const { markdownToPrettyPage } = await import("https://esm.town/v/xkonti/markdownToHtmlPage?v=5");
return await markdownToPrettyPage(privacyPolicy);
},
});
```
The `policyGetter` property accepts both async and non-async functions that return a string. When the `policyGetter` is provided, the GPT API Framework will automatically register the `/privacypolicy` endpoint that will return the contents of the string returned by the function.
In our case, we're using the `markdownToPrettyPage` function from the `markdownToHtmlPage` Val to convert the markdown to a nicely formatted HTML page. This is not necessary, but it makes the policy look nicer.
Save your val and head to the `Browser preview`. Add `/privacypolicy` to the URL and hit enter. You should see your privacy policy all properly rendered:
Copy the privacy policy URL and head to the GPT editor. Edit our existing action and on the bottom of the form you'll see a field for the privacy policy URL.
Now you should be able to share your GPT and publish it on the GPT store!
## Conclusion
Feel free to play with the GPT we created: [Video Game Idea GPT](https://chatgpt.com/g/g-8fryVV9cU-game-idea-exchange)
I hope this guide was helpful and now you can build your own GPT with custom actions. The GPT API Framework makes it easy to create APIs that can be used by GPTs, and if you have some JavaScript/TypeScript skills, you can easily create your own solutions. You can view all the code we wrote on ValTown at the following links:
- [Game Idea API Val](https://www.val.town/v/xkonti/gameIdeaApi)
- [GPT Api Framework Val](https://www.val.town/v/xkonti/gptApiFramework)
> **Tip:**
> Not only can you view the code on ValTown, but you can also:
> - Fork the Vals to automatically create a copy in your account
> - Like Vals and leave comments
> - Check for public Vals that use the `gptApiFramework` Val
> - Submit PRs to Vals to suggest changes or improvements
If you have any questions or need help with your GPT, feel free to reach out to me in the comments or on:
- [Twitter](https://twitter.com/xkonti)
- [ValTown Discord](https://discord.gg/dHv45uN5RY)
- [Nerority AI Discord](https://discord.gg/jNNst3qe) | xkonti |
1,865,403 | Contact Rupeeredee Loan Customer Care Number | https://www.customerservice-pro.com/contact-rupeeredee-loan-customer-care-number/ | 0 | 2024-05-26T05:27:28 | https://dev.to/digitalmedia019/contact-rupeeredee-loan-customer-care-number-4fh3 | https://www.customerservice-pro.com/contact-rupeeredee-loan-customer-care-number/ | digitalmedia019 | |
1,865,401 | Optimize Docker Performance: Strategies for Enhancing Image Creation and Runtime Container Management | Docker has become a crucial tool for creating, deploying, and managing containerized applications.... | 0 | 2024-05-26T05:23:11 | https://dev.to/nevinn/strategies-for-optimizing-docker-image-creation-and-runtime-container-management-j1b | docker, devops, containers | Docker has become a crucial tool for creating, deploying, and managing containerized applications. However, as applications grow in complexity, so do their Docker images and runtime environments. Efficiently managing these Docker images and containers is crucial for maintaining performance, reducing disk usage, and ensuring smooth operations. Let us look at some strategies for optimizing Docker image creation and runtime container management. Additionally, let us cover best practices. By following these strategies and techniques, you can achieve a more efficient and manageable Docker setup, ultimately leading to improved application performance and resource utilization.
To optimize Docker image creation, you can use tools and techniques such as Docker Slim, Zstandard (Zstd) compression, and Docker Squash. These approaches help reduce image size and improve performance.
## 1. Choose a Smaller Base Image
Use lightweight base images such as _alpine_ whenever possible.
## 2. Docker Slim
Docker Slim reduces the size of Docker images by stripping away unnecessary files and dependencies, leading to smaller, more secure images. [Click here](https://github.com/slimtoolkit/slim#downloads) to know more about DockerSlim
**Installation:**
`curl -sL https://raw.githubusercontent.com/slimtoolkit/slim/master/scripts/install-slim.sh | sudo -E bash -`
**Usage:**
`slim build --tag=myimage.slim myimage:latest`
## 3. Zstandard (Zstd) Compression
Zstd offers high compression ratios and fast decompression, making it suitable for compressing Docker images.
**Usage:**
- Compress Docker Image
`docker save myimage:latest | zstd -o myimage.tar.zst`
- Load Compressed Docker Image
`zstd -d myimage.tar.zst -o myimage.tar
docker load < myimage.tar`
If you encounter difficulties with Zstd compression for your image compression, consider using [_pigz_](https://linuxhandbook.com/pigz/) instead.
## 4. Docker Squash
Docker Squash reduces the number of layers in a Docker image, which can simplify the image structure and reduce its size.
**Installation:**
`pip install docker-squash`
**Usage:**
`docker-squash -t myimage:squashed myimage:latest`
For optimizing docker containers, combine strategies for managing container runtime disk usage, cleaning up unused Docker objects, and optimizing image creation and performance.
## 1. Persistent Storage Volumes
**Bind Mounts:**
Bind mounts allow you to mount a directory from the host machine into the container. This is useful for persistent data that needs to exist outside the container's lifecycle.
`docker run -v /host/path:/container/path myimage`
**Named Volumes:**
Named volumes are managed by Docker and can be used to persist data. These volumes are not tied to any specific directory on the host machine.
`docker volume create myvolume
docker run -v myvolume:/container/path myimage`
## 2. Clean Up After Operations
**Log Rotation:**
Log rotation helps manage log files by limiting their size and the number of log files retained, preventing logs from consuming excessive disk space.
`docker run --log-opt max-size=10m --log-opt max-file=3 myimage`
**Temporary File Cleanup:**
Remove temporary files generated during container operations to prevent them from consuming disk space. Use a cleanup script or application logic to delete temporary files after use.
`# In a Dockerfile
RUN apt-get update && apt-get install -y mypackage && rm -rf /var/lib/apt/lists/*`
**Regular Cleanup with Cron:**
Schedule regular cleanup tasks to remove unnecessary files and manage disk usage effectively. Use cron jobs or similar tools to automate periodic cleanup.
`# In a containerized application
crontab -l | { cat; echo "0 * * * * rm -rf /path/to/temp/files/*"; } | crontab -`
## 3. Optimize Application Behavior
**In-Memory Processing:**
Use in-memory processing to minimize disk I/O operations, which can help reduce disk usage and improve performance. Process data in memory instead of writing to disk when feasible.
`# Example in Python
data = process_data_in_memory()`
**Efficient Data Handling:**
Optimize how your application reads and writes data to avoid redundant operations and reduce disk usage. Ensure efficient data handling by writing data only when necessary.
`with open('file.txt', 'w') as file:
file.write(data)`
**Use Temporary Storage:**
For temporary data that doesn't need to be persisted, use temporary filesystems like tmpfs to store data in memory. Mount a tmpfs volume for temporary data storage.
`docker run --mount type=tmpfs,destination=/path/to/tmpfs myimage`
## 4. Prune Unused Docker Objects
To manage disk space and maintain a clean Docker environment, you can prune unused Docker objects such as images, containers, volumes, and networks. Docker provides commands to prune each of these object types, helping you free up disk space and keep your Docker environment tidy.
**Prune Images:**
`docker image prune -a -f`
**Prune Containers:**
`docker container prune -f`
**Prune Volumes:**
`docker volume prune -f`
**Prune Networks:**
`docker network prune -f`
**Prune All Unused Objects:**
`docker system prune -a -f --volumes`
## 5. Automate Pruning with a Script
**Pruning Script:**
```
#!/bin/bash
# Prune unused images
docker image prune -a -f
# Prune stopped containers
docker container prune -f
# Prune unused volumes
docker volume prune -f
# Prune unused networks
docker network prune -f
# Optionally, prune all unused objects
# docker system prune -a -f --volumes
```
**Scheduling with Cron:**
`crontab -e`
Add the following line to run the script daily at midnight:
`0 0 * * * /path/to/your/script.sh`
## 6. Optimize Image Creation
**Docker Slim:**
`docker-slim build myimage`
**Zstandard Compression:**
`docker save --output myimage.tar.zst --compression zstd myimage:latest
docker load --input myimage.tar.zst`
**Docker Squash:**
`pip install docker-squash
docker-squash -t myimage:squashed myimage:latest`
Example Dockerfile Incorporating Best Practices
```
# Dockerfile
FROM ubuntu:20.04
# Install necessary packages
RUN apt-get update && apt-get install -y python3 && rm -rf /var/lib/apt/lists/*
# Copy application code
COPY . /app
WORKDIR /app
# Set up a volume for persistent data
VOLUME /app/data
# Use tmpfs for temporary files
RUN mkdir -p /tmp/data
VOLUME /tmp/data
# Cleanup script for temporary files
RUN echo "0 * * * * root rm -rf /tmp/data/*" >> /etc/crontab
# Run the application
CMD ["python3", "app.py"]
**Docker Run Command**
docker run -d --name myapp \
-v appdata:/app/data \
--mount type=tmpfs,destination=/tmp/data \
--log-opt max-size=10m --log-opt max-file=3 \
myimage
```
## Conclusion
By following these strategies and best practices, you can optimize your Docker environment for better performance, efficient disk usage, and improved application behavior. Regular maintenance through pruning, coupled with optimized image creation and runtime management, will lead to a more efficient Docker setup.
## References
["Create Single Image Layers with Docker Squash"](https://medium.com/@geralexgr/create-single-image-layers-with-docker-squash-ade36cf9217)
Geralexgr, Medium
["Reduce the Size of Container Images with Docker Slim"](https://developers.redhat.com/articles/2022/01/17/reduce-size-container-images-dockerslim#)
Karan Singh, Red Hat Developer
["Reducing Docker Image Size from 1.4GB to 15MB: Angular App"](https://medium.com/@spei/reducing-docker-image-size-from-1-4gb-to-15mb-angular-app-1385d042eca3)
Spei, Medium
["Docker Alpine Images: Explain"](https://www.reddit.com/r/docker/comments/15h44j6/docker_alpine_images_explain/)
Reddit Discussion
["Push image faster by using pigz to compress"](https://github.com/moby/moby/pull/44008)
Moby GitHub Repository Issue
["How To Remove Docker Images, Containers, and Volumes"](https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes)
Melissa Anderson and Anish Singh Walia, DigitalOcean Community
["Docker Log Rotation"](https://signoz.io/blog/docker-log-rotation/)
Favour Daniel,Signoz Blog
["Add cron to the docker image for recurring transactions #2170"](https://github.com/firefly-iii/firefly-iii/issues/2170)
firefly-iii GitHub Repository Issue
["Cron Job to Delete Files in /tmp Directory"](https://community.hpe.com/t5/operating-system-hp-ux/cron-job-to-delete-files-in-tmp-directory/td-p/3259557)
HPE Community
| nevinn |
1,865,389 | Understanding Quantization in AI: A Comprehensive Guide Including LoRA and QLoRA | Quantization is a crucial technique in the realm of Artificial Intelligence (AI) and Machine Learning... | 0 | 2024-05-26T05:14:58 | https://dev.to/jackrover/understanding-quantization-in-ai-a-comprehensive-guide-including-lora-and-qlora-4dl1 | quantization, ai | Quantization is a crucial technique in the realm of Artificial Intelligence (AI) and Machine Learning (ML). It plays a vital role in optimizing AI models for deployment, particularly on edge devices where computational resources and power consumption are limited. This article delves into the concept of quantization, exploring its different types, including LoRA and QLoRA, and their respective benefits and applications.
**What is Quantization?**
Quantization in AI refers to the process of mapping continuous values to a finite set of discrete values. This is primarily used to reduce the precision of the numbers used in the model’s computations, thus reducing the model size and speeding up inference without significantly compromising accuracy.
## Types of Quantization
**Uniform Quantization**
**Overview**: Uniform quantization, also known as linear quantization, involves mapping the floating-point values to integer values using a uniform step size.
**Advantages**: Simplicity and ease of implementation.
**Disadvantages**: May not be suitable for data with a wide dynamic range as it can lead to significant information loss.
## Non-Uniform Quantization
**Overview**: Non-uniform quantization, or non-linear quantization, uses variable step sizes to map values, allowing for more flexibility in handling data with varying distributions.
**Advantages**: Better preserves important information for data with a wide range.
**Disadvantages**: More complex to implement and requires more computational resources.
## Dynamic Range Quantization
**Overview**: This type involves converting weights from floating-point to 8-bit integers, while the activations remain in floating-point during inference.
**Advantages**: Balances between model size reduction and maintaining accuracy.
**Disadvantages**: Slightly more complex as it involves keeping some parts of the model in floating-point.
## Full Integer Quantization
**Overview**: Converts both the weights and activations to 8-bit integers.
**Advantages**: Significant reduction in model size and inference time, making it highly suitable for edge devices.
**Disadvantages**: Can result in a more significant loss of accuracy, especially if not carefully calibrated.
## Quantization-Aware Training (QAT)
**Overview**: Integrates quantization into the training process itself, allowing the model to learn the quantization errors and adjust accordingly.
**Advantages**: Results in better accuracy compared to post-training quantization methods.
**Disadvantages**: More computationally intensive during the training phase and requires modifications to the training pipeline.
## Post-Training Quantization (PTQ)
**Overview**: Applied after the model has been trained. The pre-trained floating-point model is converted into a quantized model.
**Advantages**: Simpler and faster to implement as it does not require changes to the training process.
**Disadvantages**: May result in lower accuracy compared to QAT, especially in complex models.
## LoRA (Low-Rank Adaptation)
**Overview**: LoRA is a technique that involves fine-tuning a pre-trained model by injecting low-rank matrices into its layers. This approach is particularly useful for adapting large language models to specific tasks with minimal computational overhead.
**Advantages**: Efficient fine-tuning with fewer parameters, reduced training time, and lower memory usage.
**Disadvantages**: May not be suitable for all types of models and tasks, especially those requiring significant changes in model architecture.
Applications: LoRA is often used in natural language processing (NLP) tasks where large models need to be adapted for specific domains or languages without retraining the entire model from scratch.
## QLoRA (Quantized Low-Rank Adaptation)
**Overview**: QLoRA combines the principles of quantization and LoRA. It involves quantizing the pre-trained model and then applying low-rank adaptation techniques. This hybrid approach aims to leverage the benefits of both quantization (reduced model size and faster inference) and low-rank adaptation (efficient fine-tuning).
**Advantages**: Enhanced efficiency in both storage and computation, making it ideal for deployment on edge devices and resource-constrained environments. It also retains the adaptability benefits of LoRA.
**Disadvantages**: The combined complexity of quantization and low-rank adaptation can make implementation and tuning more challenging.
**Applications**: QLoRA is particularly useful in scenarios where models need to be both compact and adaptable, such as in mobile applications and embedded systems requiring frequent updates or adaptations to new data.
## Applications of Quantization in AI
**Edge Computing:** Quantization allows AI models to run efficiently on edge devices like smartphones, IoT devices, and embedded systems where computational resources are limited.
**Reduced Latency:** By lowering the computational load, quantization helps in achieving faster inference times, which is critical for real-time applications.
**Energy Efficiency:** Lowering the precision of computations reduces the energy consumption of AI models, making them more sustainable for deployment in energy-constrained environments.
Storage and Memory Efficiency: Quantized models require less storage space, making it feasible to deploy larger models on devices with limited memory.
## Conclusion
Quantization, along with advanced techniques like LoRA and QLoRA, is revolutionizing the way AI models are optimized for deployment. These techniques enable the creation of efficient and compact models that can run on a wide range of devices, from powerful servers to tiny edge devices, without significantly compromising performance. As the demand for AI solutions continues to grow, mastering these techniques will be crucial for delivering high-performance, scalable, and adaptable AI systems. | jackrover |
1,865,387 | Importance of Using a BMI Calculator for Your Health | Body Mass Index (BMI) is a widely used tool to assess an individual's weight status in relation to... | 0 | 2024-05-26T05:11:29 | https://dev.to/healthcalc/importance-of-using-a-bmi-calculator-for-your-health-88d | Body Mass Index (BMI) is a widely used tool to assess an individual's weight status in relation to their height. While it may not provide a complete picture of health, utilizing a **[BMI Calculator](https://bmicalculator.fit/)** can be a valuable step towards understanding and managing your weight and overall well-being. In this article, we will explore the reasons why using a BMI calc is important for maintaining good health.
1. **Assessing Weight Status**: One of the primary reasons to use a BMI calculator is to determine whether you are underweight, normal weight, overweight, or obese. By calculating your BMI, you can get a general idea of where you fall on the weight spectrum and whether you may be at risk for certain health conditions associated with being over or underweight.
2. **Health Risk Identification**: BMI is linked to various health risks, such as heart disease, diabetes, high blood pressure, and certain types of cancer. Knowing your BMI can help you and your healthcare provider identify potential health risks early on, allowing for preventive measures to be taken to reduce the risk of developing these conditions.
3. **Setting Health Goals**: Monitoring your BMI over time can help you set realistic health and fitness goals. Whether you are aiming to lose weight, gain muscle mass, or maintain your current weight, tracking changes in your BMI can provide valuable feedback on the effectiveness of your efforts and help you stay motivated on your health journey.
4. **Informing Lifestyle Choices**: Your BMI can guide you in making informed decisions about your diet, exercise routine, and overall lifestyle choices. For example, if your BMI indicates that you are overweight, you may consider incorporating more physical activity into your daily routine and making healthier food choices to achieve a healthier weight.
5. **Professional Guidance**: Healthcare professionals often use BMI as a screening tool to assess patients' weight status and overall health. By knowing your BMI, you can have more meaningful discussions with your healthcare provider about your weight management goals and receive personalized recommendations for improving your health.
6. **Overall Well-Being**: Maintaining a healthy weight is essential for overall well-being and quality of life. By using a BMI tool to monitor your weight status, you can take proactive steps to protect your health, improve your energy levels, enhance your self-esteem, and reduce the risk of chronic diseases associated with obesity and underweight.
In conclusion, using a **[BMI Calculator](https://bmicalculator.fit/)** is a simple yet effective way to gain insight into your weight status and overall health. While BMI should be considered in conjunction with other health indicators, it can be a valuable tool for setting goals, identifying health risks, and making informed decisions to improve your well-being. Embrace the power of knowledge that a BMI calc provides and take proactive steps towards a healthier, happier you. | healthcalc | |
1,865,385 | BNPM Full Form | https://www.fullform-shortform.com/bnpm-full-form/ | 0 | 2024-05-26T05:04:03 | https://dev.to/digitalmedia019/bnpm-full-form-2obk | https://www.fullform-shortform.com/bnpm-full-form/ | digitalmedia019 | |
1,858,716 | Astrology vs Software Engineering | My journey into software engineering began early, driven by a passion for learning tools and concepts... | 0 | 2024-05-26T05:00:35 | https://dev.to/adriannavaldivia/astrology-vs-software-engineering-1g87 | astrology, javascript, programming, react | My journey into software engineering began early, driven by a passion for learning tools and concepts that later required collaboration with people of diverse background to turn into a career. In parallel, astrology became a tool to understand myself and my past, boosting my confidence in both life and career decisions. Understanding yourself leads to understanding others, and vice versa. Interestingly, astrology and software engineering, despite their different uses and outcomes, share a logical and rule-based framework & can get technical quite easily.
I never imagined I'd draw parallels between astrology and software development, but in integrating these topics in my live-stream titled, **Astrology & JavaScript Series**, I've uncovered a fun and fascinating analogy worth exploring.
Whether you're involved in tech and currently use programming languages, finding amusement in astrology, or if you're an astrology enthusiast who appreciates the analytical aspects and detailed insights it offers, you'll find this concept intriguing. It's not only fascinating but also a valuable skill to possess, offering numerous benefits.
Both astrology and programming languages have systems, rules, and structures that guide their application and interpretation. Without getting too far into the nitty gritty details of each, let’s talk about how the two might align in terms of their components and functionalities below.
- [Programming Languages vs. Astrological Systems](#programming-languages-vs-astrological-systems)
- [Syntax and Grammar vs. Astrological Rules](#syntax-and-grammar-vs-astrological-rules)
- [Variables vs. Planets, Signs, and Houses](#variables-vs-planets-signs-and-houses)
- [Functions and Methods vs. Aspects](#functions-and-methods-vs-aspects)
- [Conditional Statements vs. Dignities and Debilities](#conditional-statements-vs-dignities-and-debilities)
- [Libraries and Frameworks vs. Astrological Techniques and Systems](#libraries-and-frameworks-vs-astrological-techniques-and-systems)
- [Debugging vs. Chart Rectification](#debugging-vs-chart-rectification)
- [Documentation and Comments vs. Astrological Literature](#documentation-and-comments-vs-astrological-literature)
- [Final Words](#final-words)
## Programming Languages vs. Astrological Systems
In this analogy, the choice between different programming languages (e.g., JavasScript, Python, Java, C++) could be a lot like the choice between different astrological systems, such as Vedic (Sidereal) astrology and Western (Tropical) astrology. Each programming language and astrological system has its own set of rules, syntax, and areas where it excels, influenced by its *foundational principles*.
## Syntax and Grammar vs. Astrological Rules
Just as each programming language has its own syntax that directs how code must be written to be correctly interpreted by the compiler or interpreter, each astrological system has its own set of rules for interpretation. This includes how planets, signs, houses, and aspects are understood and interpreted. The syntax in programming ensures code is structured correctly, while astrological rules guide the interpretation of a chart.
## Variables vs. Planets, Signs, and Houses
In programming, variables are used to store information that can be manipulated. In astrology, planets, signs, and houses act somewhat like variables, each holding their specific meanings and influences that interact in complex ways to form the basis of a reading.
## Functions and Methods vs Aspects
Functions in programming are blocks of code designed to perform a particular task, and methods can be functions associated with objects or classes. In astrology, aspects (the angles planets make to each other in the sky) could be seen as specific interactions or relationships between the 'variables' (planets) that modify outcomes or influences, much like how functions and methods operate on variables to produce results.
## Conditional Statements vs. Dignities and Debilities
Conditional statements in programming (if/else statements) execute different blocks of code based on certain conditions. This can be compared to the concept of essential dignities and debilities in astrology, where a planet's position in a sign or house can strengthen (dignity) or weaken (debility) its effect, depending on the 'conditions' of its placement.
## Libraries and Frameworks vs. Astrological Techniques and Systems
Just as software engineers use libraries and frameworks to extend the functionality of a programming language and simplify complex tasks, astrologers use various techniques (e.g., progressions, transits, solar returns, synastry) and systems (e.g., Hellenistic, Medieval, Modern) to add depth and precision to their interpretations.
## Debugging vs. Chart Rectification
Debugging in programming involves identifying and removing errors from code. In astrology, rectification is a process used to correct or verify uncertain birth times by working backwards from known life events. Both processes involve a careful analysis to ensure accuracy.
## **Documentation and Comments vs. Astrological Literature**
In programming, documentation and comments are used to explain how the code works and to make it easier for others to understand. Similarly, astrological texts and teachings serve as the documentation that explains the theory, techniques, and interpretations that form the foundation of astrological practice.
## Final Words
These comparisons have always ruminated in my mind especially since I’ve studied both topics very closely as a career and as a hobby. Just as I recognize patterns in software, I recognize patterns in my life experiences and correlate them with astrology transits. The entire idea is about learning a system and knowing how to apply it to real world problems.
If you found this interesting, I host an Astrology & JavaScript Lives-streamed Series where I teach folks about the foundational blocks of Astrology while building websites using Remix & other React libraries. Follow me on X (fka Twitter) for more information [@driannavaldivia](https://x.com/driannavaldivia)
I look forward to publishing more posts about using the Remix Framework, Tailwind, Styled Components, TypeScript, React, and how to use DivineAPI to in order to build Astrology based websites or apps.
Thanks for reading 📖
| adriannavaldivia |
1,857,497 | Exploring Vue.js for React Developers: A Comprehensive Introduction | Introduction: As React developers, we're constantly exploring new technologies to enhance our toolkit... | 0 | 2024-05-26T05:00:00 | https://dev.to/nitin-rachabathuni/exploring-vuejs-for-react-developers-a-comprehensive-introduction-264f | Introduction:
As React developers, we're constantly exploring new technologies to enhance our toolkit and broaden our skillset. Vue.js, with its simplicity, flexibility, and growing popularity, stands out as a compelling choice. In this article, we'll embark on a journey to understand Vue.js from the perspective of experienced React developers. We'll explore its key concepts, draw comparisons with React, and delve into coding examples to solidify our understanding.
Understanding Vue.js:
Vue.js shares many similarities with React, but it also introduces its own unique concepts. At its core, Vue.js revolves around the concept of components, just like React. However, Vue.js provides a more opinionated approach in structuring components by combining HTML, CSS, and JavaScript in a single file. Let's dive into a basic Vue component to see how it compares to its React counterpart:
```
<template>
<div>
<h1>{{ message }}</h1>
<button @click="changeMessage">Change Message</button>
</div>
</template>
<script>
export default {
data() {
return {
message: 'Hello Vue!'
};
},
methods: {
changeMessage() {
this.message = 'Vue is awesome!';
}
}
};
</script>
<style scoped>
/* Styles specific to this component */
</style>
```
In this Vue component, we define a template section with HTML markup, a script section with JavaScript logic, and optionally a scoped style section for CSS. Vue's reactivity system automatically updates the view when the data changes, similar to React's virtual DOM.
Comparing with React:
React and Vue.js share the component-based architecture, but their approaches to handling components and state management differ. React encourages using JSX for component templates and separates concerns by default, whereas Vue.js provides more flexibility in how components are structured and styled.
```
Let's compare the Vue component above with its React counterpart:
import React, { useState } from 'react';
function App() {
const [message, setMessage] = useState('Hello React!');
const changeMessage = () => {
setMessage('React is awesome!');
};
return (
<div>
<h1>{message}</h1>
<button onClick={changeMessage}>Change Message</button>
</div>
);
}
export default App;
```
In React, we use JSX to define the component's UI, and state management is handled using hooks like useState. Both React and Vue.js provide efficient ways to manage state and handle user interactions, albeit with slightly different syntaxes and conventions.
Transitioning to Vue.js:
For React developers looking to transition to Vue.js, the learning curve is relatively smooth due to the similarities between the two frameworks. Vue's official documentation is comprehensive and beginner-friendly, offering guides, tutorials, and examples to help you get started. Additionally, Vue's ecosystem includes tools like Vue Router for routing and Vuex for state management, mirroring React's ecosystem with React Router and Redux.
Conclusion:
In this article, we've explored Vue.js from the perspective of experienced React developers, highlighting its key concepts, comparing it with React, and providing coding examples to illustrate the similarities and differences. As developers, expanding our skillset to encompass multiple frameworks empowers us to tackle a wider range of projects and adapt to evolving industry trends. Whether you're a seasoned React developer or someone looking to explore new frontiers in web development, Vue.js offers a compelling alternative worth exploring further. Happy coding!
---
Thank you for reading my article! For more updates and useful information, feel free to connect with me on LinkedIn and follow me on Twitter. I look forward to engaging with more like-minded professionals and sharing valuable insights.
| nitin-rachabathuni | |
1,865,380 | Mastering Professional Communication in Tech: Key Strategies and Best Practices | We all know coding is crucial for landing a job in the tech industry, but did you know that acing... | 0 | 2024-05-26T04:47:58 | https://dev.to/sqjdq/professional-communication-1p6e | We all know coding is crucial for landing a job in the tech industry, but did you know that acing your English skills can be just as important? In the competitive landscape of job hunting, a well-crafted cover letter can set you apart from the crowd and make a compelling case for why you’re the perfect candidate. Recently, in an English class focused on professional writing, we tackled the art of cover letter writing—a powerful tool that every aspiring software engineer should master. Here’s a breakdown of what I learned and how you can use it to shine.
1. Introduction: Grab Their Attention
Think of the introduction as your first impression—it needs to be strong and memorable. Rather than starting with a generic statement like "I am applying for the software engineer position," aim to capture the recruiter’s attention immediately. Introduce yourself briefly, mention your current academic standing or professional status, and express your enthusiasm for the specific company or role. For instance, "As a senior computer science student at XYZ University, I am excited about the opportunity to bring my expertise in software development to ABC Corp."
2. Highlight Your Skills and Achievements
This section is your opportunity to showcase your qualifications and accomplishments. Highlight the programming languages you are proficient in, such as Java, Python, or C++, and mention any relevant coursework or certifications. If you have completed notable projects, briefly describe them and their impact. For example, "During my studies, I developed a machine learning algorithm for predicting stock market trends, which achieved a 15% improvement in accuracy over existing models." This not only demonstrates your technical skills but also your ability to apply them effectively.
3. Stand Out From the Crowd
To truly stand out, you need to convey why you are uniquely suited for the job. This involves thorough research about the company and its projects. Explain what excites you about their work and how your skills and experiences align with their needs. Avoid generic statements and instead provide specific examples. For instance, "I am particularly drawn to ABC Corp’s innovative approach to cloud computing solutions. My experience in developing scalable cloud-based applications would allow me to contribute effectively to your team."
4. Keep it Short and Concise
Recruiters often have limited time to review applications, so it’s essential to keep your cover letter concise and to the point. Aim for a one-page letter and use clear, straightforward language. Avoid unnecessary jargon and overly complex sentences. The goal is to communicate your qualifications and enthusiasm clearly and efficiently. A succinct cover letter not only respects the recruiter’s time but also demonstrates your ability to communicate effectively.
Final Thoughts
Acing your cover letter is not just about showcasing your technical skills but also about demonstrating your ability to communicate effectively and make a strong case for why you’re the perfect fit for the role. By grabbing the recruiter’s attention with a compelling introduction, highlighting your skills and achievements, standing out with tailored details about the company, and keeping your letter concise, you can significantly increase your chances of landing that dream job.
Remember, a well-written cover letter is your chance to make a personal connection with the recruiter and leave a lasting impression. So, take the time to craft a thoughtful and impactful cover letter—it could be the key to unlocking your dream job in the tech industry. | sqjdq | |
1,865,379 | My Experience at GEIW: Developing CleanBox to Combat Phishing Attacks | The excitement in the air was undeniable as I joined hundreds of innovators at the Global... | 0 | 2024-05-26T04:47:31 | https://dev.to/sqjdq/my-participation-in-the-geiw-days-3nej | hackathon |
The excitement in the air was undeniable as I joined hundreds of innovators at the Global Entrepreneur and Innovation Week (GEIW) Hackathon. This event was far from a typical coding competition; it was an intense burst of brainstorming, problem-solving, and boundary-pushing, all under a tight deadline.
Our first challenge was uniquely Moroccan: addressing drought. With only 48 hours to find a solution, our team focused on a promising idea—a Drought Prediction Platform. We envisioned a user-friendly tool leveraging data and analytics to forecast droughts, helping farmers and policymakers make informed decisions. Fueled by late-night caffeine, our coding sessions were both intense and exhilarating, and the strong sense of camaraderie drove us to create something impactful.
Advancing to the final phase brought an unmatched thrill. This time, the global challenge was phishing. We saw a chance to protect organizations and individuals with our solution: CleanBox, a Software-as-a-Service (SaaS) designed to secure email. CleanBox would serve as a protective mail server, filtering emails before they reached clients' inboxes, significantly reducing phishing risks.
The last 24 hours were a whirlwind of focused development, pitch refinement, and battling fatigue. Our determination to create a practical solution fueled every keystroke. When it was time to present, our nervous energy turned into a passionate demonstration of CleanBox.
Though we didn't win the final prize, the experience was transformative. GEIW wasn't just about winning; it was about the journey of innovation, the power of collaboration, and the excitement of bringing ideas to life. We tackled two very different challenges, sharpened our skills under pressure, and gained newfound confidence in our ability to make a difference.
To view the complete code for our project and the documentation, you can visit our GitHub repository here :
[the model repo](https://github.com/issam-assiyadi/fishing-model)
[the main repo](https://github.com/elmahdigaga/clean-box)
The repository contains everything needed to understand and reproduce our system, including preprocessing scripts, model training, and prediction functions. | sqjdq |
1,865,378 | Secure Your Virtual Private Server: Top 20 VPS Security Practices for Enhanced Protection | In an era where digital security is paramount for businesses, securing Virtual Private Servers (VPS)... | 0 | 2024-05-26T04:46:52 | https://dev.to/vps_sell/secure-your-virtual-private-server-top-20-vps-security-practices-for-enhanced-protection-14j2 | vps, security, systemadministrator |
In an era where digital security is paramount for businesses, securing Virtual Private Servers (VPS) against a myriad of cyber threats has become a crucial task. Linux VPS, renowned for their flexibility and performance, serve as a cornerstone for many companies' operations. However, their popularity also makes them a target for cybercriminals, underscoring the need for robust security measures. Implementing a comprehensive security strategy for VPS, including those hosted on platforms like VPSsell.com, is essential for protecting sensitive data and maintaining business continuity.
The Landscape of VPS Security Vulnerabilities
Cybersecurity threats evolve continuously, with adversaries seeking new ways to exploit vulnerabilities. Key threats to VPS security include malware, brute force attacks, sniffing attacks, SQL injections, cross-site scripting (XSS), broken authentication, and insufficient function-level control. Each of these threats can compromise the integrity, confidentiality, and availability of critical systems and data.
Enhancing VPS Security: Proactive Measures and Best Practices
Securing a Linux VPS involves more than just setting up initial defenses. It requires ongoing vigilance and a multi-layered approach to security. Here are the top strategies and practices to enhance VPS security, applicable to services provided by platforms like VPSsell.com and others:
1. Disable Root Login: Prevent direct access to the root account to reduce the risk of unauthorized system control.
2. Configure a firewall: Use tools like UFW or iptables to define and enforce rules that guard against unauthorized access.
3. Install Antivirus Software: Deploy reputable antivirus solutions to detect and mitigate malware threats.
4. Implement DDoS Protection: Protect your VPS from DDoS attacks that can overwhelm resources and disrupt services.
5. Change the Default SSH Port: Modify the default SSH port to reduce the risk of automated brute-force attacks.
6. Use SSH Keys for Authentication: Opt for SSH keys over passwords for a more secure and resistant authentication method.
7. Set Up an Internal Firewall with IP Tables: Fine-tune traffic control and access permissions with IP tables, ensuring only legitimate traffic is allowed.
8. Prefer SFTP over FTP: Opt for Secure File Transfer Protocol (SFTP) to ensure encrypted file transfers, enhancing data security during transit.
9. Establish a VPN: Use a Virtual Private Network (VPN) for an encrypted connection to your VPS, securing data from potential interceptors.
10. Review and Limit User Rights: Apply the principle of least privilege, ensuring users have only the necessary access for their roles.
11. Disable IPv6 if Not in Use: Limit potential attack vectors by disabling IPv6 on systems where it's unnecessary.
12. Monitor Server Logs: Keep an eye on logs for signs of unauthorized access or suspicious activities.
13. Use Fail2Ban: Automatically block IP addresses exhibiting patterns of malicious behavior based on log entries.
14. Deploy Malware Scanners: Use specialized malware scanners to detect and remove malicious software.
15. Disable Unused Ports: Close ports not in use to minimize entry points for attackers.
16. Install a Rootkit Scanner: Detect and eliminate rootkits, which can hide the presence of malware.
17. Adopt Disk Partitioning: Segment disk space to isolate sensitive data and system files, enhancing security.
18. Enforce Strong Password Policies: Advocate for complex passwords, changed regularly, to thwart brute-force attacks.
19. Regularly Update and Patch Systems: Maintain up-to-date systems to protect against exploits targeting known vulnerabilities.
20. Regularly Backup Data: Implement a robust backup strategy to ensure quick recovery from data loss or cyber attacks.
Addressing Common Security Challenges
A comprehensive approach to VPS security involves not only deploying the aforementioned measures but also addressing the root causes of vulnerabilities:
- Strengthening Password Security: Utilize password managers and multi-factor authentication (MFA) to enhance password security.
- Securing Ports: Conduct regular audits and use firewalls to control access, minimizing exposure.
- Applying Function-Level Access Controls: Clearly define user roles and permissions, ensuring actions are restricted based on necessity.
- Keeping Software Updated: Automate the process of software updates and patching to reduce the window of vulnerability.
- Prudent User Permission Management: Regularly review user permissions, adhering to the principle of least privilege to minimize risks.
For VPS solutions like those offered by VPSsell.com, these strategies provide a foundation for securing your digital assets against the evolving threat landscape. By implementing these best practices, businesses can significantly enhance their VPS security posture, safeguarding their operations against cyber threats and maintaining the trust of their customers in an increasingly digital world. | vps_sell |
1,865,377 | [FASTPANEL] Getting started with FASTPANEL | Introduction FASTPANEL is a simple and powerful server management panel that allows you to create... | 0 | 2024-05-26T04:42:46 | https://dev.to/vps_sell/fastpanel-getting-started-with-fastpanel-2n58 | fastpanel, vps, linux, webhosting | **Introduction**
FASTPANEL is a simple and powerful server management panel that allows you to create sites in a few clicks, manage mail, databases, backups, plan tasks, and analyze traffic. Set and configure access rights as you like - each site can be assigned to a single user. To improve the security of your account, connect two-factor authentication.
More information can be found on an official web page:
[https://fastpanel.direct/](https://fastpanel.direct/)
Demo version can be tried here:
https://fastpanel.direct/demo
FASTPANEL template
In [VPSsell](https://www.vpssell.com/) you are able to install FASTPANEL template really easy and fast, only with few mouse clicks:
1.Login to the Client Area;
2.Select at the top of the menu the "My Services > VPS" tab;
3.Press the "Manage" button at the service table;
4.Press the "Install OS" button;
5.Choose operating system, agree with the warning, and press "Continue";
6.Wait for 5-10 minutes and refresh the VPS management page.
FASTPANEL template contains:
Debian 10
Apache 2.4
NGINX 1.18
PHP 7.3
MySQL 5.7
1. Login
FASTPANEL uses 8888 port, so to connect to the control panel on your internet browser enter:
https://ip_of_your_server:8888
On your first login, the Panel will ask you for a license. In order to get one, simply enter your email address. The license data will be sent to your email address.
Log in details for the first attempt to log in are:
Username: fastuser
The password for the "fastuser" user matches the "root" user password. It can be found in your VPS management page under the Login Details tab. | vps_sell |
1,865,375 | How I solve React's functional component and hooks limitation that cause a lot of troubles/bugs | I. What's the limitation? Recently, I took over a project that mostly work on realtime... | 0 | 2024-05-26T04:30:02 | https://dev.to/bi_khi_647aa6dba9175191/how-i-solve-reacts-functional-component-and-hooks-limitation-that-cause-a-lot-of-troublesbugs-4kj1 | webdev, react | ## I. What's the limitation?
Recently, I took over a project that mostly work on realtime communication(messaging, video call, integrate with different vendors using different sockets). At the moment I joined, there're bunch of bugs that related to glitches stuff.
Take a look at the code below:
```
const Page = () => {
const [roomName, setRoomName] = useState();
const [numberOfParticipant, setNumberOfParticipant] = useState();
const connection = useVideoCallConnection();
useEffect(() => {
const conference = connection.createConference(roomName);
conference.on('JOINED', () => {
if (numberOfParticipant > 2) {
conference.setViewMode('grid');
}
});
return () => {
conference.off('JOINED');
conference.disconnect();
};
}, [roomName, connection]);
// Component UI
};
```
It seems fine, but not…
The main issue is: sometime when _createConference_ took a few seconds, someone joined the room in the middle of the creation. _numberOfParticipants_ inside remained the same(_numberOfParticipants_ is number and wasn't included in the dependencies list). It cause the grid layout turned off, even if the participants number larger than two.
You might wonder: "why don't we just add _numberOfParticipants_ to the dep list?"… That's what I thought in the beggining too.
```
const Page = () => {
const [roomName, setRoomName] = useState();
const [numberOfParticipant, setNumberOfParticipant] = useState();
const connection = useVideoCallConnection();
useEffect(() => {
const conference = connection.createConference(roomName);
conference.on('JOINED', () => {
if (numberOfParticipant > 2) {
conference.setViewMode('grid');
}
});
return () => {
conference.off('JOINED');
conference.disconnect();
};
}, [roomName, connection, numberOfParticipant]);
// Component UI
};
```
I tried and fixed the problem with grid view but ended up with a new issue: when _numberOfParticipant_ changed, it's disconnect the current conference and re-create a new one...
Because the first solution didn't work, I tried another way by seperating the conference init hook into two _useEffect_ hook:
```
const Page = () => {
const [roomName, setRoomName] = useState();
const [numberOfParticipant, setNumberOfParticipant] = useState();
const [conference, setConference] = useState();
const connection = useVideoCallConnection();
useEffect(() => {
if (conference) {
conference.on('JOINED', () => {
if (numberOfParticipant > 2) {
conference.setViewMode('grid');
}
});
}
return () => {
if (conference) {
// Call to this method will throw an error, because conference is already off
conference.off('JOINED');
}
}
}, [conference, numberOfParticipant]);
useEffect(() => {
const _conference = connection.createConference(roomName) ;
_conference.connect();
setConference(_conference);
_conference.on('LEAVE', () => {
setConference (null);
});
return () => {
_conference.disconnect();
}
}, [roomName, connection]);
// Component UI
};
```
By moving _setViewMode_ to another _useEffect_, we solved the issue(changing the _numberOfParticipant_ only remove the previous listener instance and add a new one)… So the new code is good, isn't it?
Unfortunately, it's not. It worked fine when joining conference but not when leaving.
When the user left the conference(_roomName_ changed). that one was disconnected and set to null. When it was changed, the _conferece.off('joined')_ is called and will throw an execption due to the disconnection happened before.
After a while of trying, I figure it out the limitation here is: **If an outside vavariable value is primnitive, I can't get the latest value of it inside _useEffect_ without including it in the dependencies list and re-run the cleanup everytime**(react mentioned the same thing here https://react.dev/learn/separating-events-from-effects#extracting-non-reactive-logic-out-of-effects)
## II. Why It happened?
useEffect accepts two params
- A function declaration(**memorized per depdencies list**)
- An array of dependencies list.
Since the function declaration is memorized, the outside variable with priminitive value which is used inside the function will also be memorized per dependencies list. Including a value in the depdencies list make it reactive(changing the variable's value trigger an effect and its cleanup)
## III. How I solved that?
Because the rootcause is: variable with priminitive value inside _useEffect_, we can solve it by duplicate the value with a ref.
```
const Page = () => {
const [roomName, setRoomName] = useState();
const [numberOfParticipant, setNumberOfParticipant] = useState();
const connection = useVideoCallConnection();
// Create a ref to use inside effect
const numberOfParticipantRef = useRef(numberOfParticipant);
numberOfParticipantRef.current = numberOfParticipant;
useEffect(() => {
const conference = connection.createConference(roomName);
conference.on('JOINED', () => {
// This is reference so it works now!!
if (numberOfParticipantRef.current > 2) {
conference.setViewMode('grid');
}
});
return () => {
conference.off('JOINED');
conference.disconnect();
};
}, [roomName, connection]);
// Component UI
};
```
_numberOfParticipantRef_ is an object so we could get the latest value inside the effect without re-run anything.
Since my project has a bunch of cases like this and I don't want to do the duplication for all files. I created an npm package hook and a babel plugin to do the job for me
```
import useNonReactiveState from 'use-none-reactive-state';
const Page = () => {
// Just replace useState with useNonReactiveState and use the babel plugin
const [roomName, setRoomName] = useNonReactiveState();
const [numberOfParticipant, setNumberOfParticipant] = useNonReactiveState();
const connection = useVideoCallConnection();
useEffect(() => {
const conference = connection.createConference(roomName);
conference.on('JOINED', () => {
if (numberOfParticipant > 2) {
conference.setViewMode('grid');
}
});
return () => {
conference.off('JOINED');
conference.disconnect();
};
}, [roomName, connection]);
// Component UI
};
```
## IV. Conclusion
That's how I solved the problem. Please gimme feedbacks If anything is not correct, I really appreciate that. If you feel interest in the package and the plugin, here's the links:
- https://www.npmjs.com/package/use-none-reactive-state
- https://www.npmjs.com/package/babel-plugin-none-reactive-effect | bi_khi_647aa6dba9175191 |
1,858,210 | Getting Started with ESLint and Husky in Your Node.js Project | Ensuring clean and consistent code is crucial for any Node.js project. This blog dives into a... | 0 | 2024-05-26T04:29:39 | https://dev.to/ajeetraina/getting-started-with-eslint-and-husky-in-your-nodejs-project-2i36 | Ensuring clean and consistent code is crucial for any Node.js project. This blog dives into a practical approach to achieve that by integrating ESLint with Husky. It guides you through setting up pre-commit linting, a powerful technique that automatically checks your code for style and formatting issues before every commit. With this setup, you can streamline your development process and maintain a high level of code quality throughout your project.
To integrate ESLint with a pre-commit hook using Husky in your Node.js project, follow these steps:
## 1. Install Dependencies
You'll need ESLint, Husky, and lint-staged. You can install them using npm or yarn. Here is how you can do it with npm:
```
npm install eslint husky lint-staged --save-dev
```
## 2. Initialize ESLint
If you haven't already set up ESLint, you can initialize it in your project by running:
```
npx eslint --init
```
This command will guide you through a series of questions to set up ESLint according to your project's needs.
```
You can also run this command directly using 'npm init @eslint/config@latest'.
Need to install the following packages:
@eslint/create-config@1.1.1
Ok to proceed? (y) y
✔ How would you like to use ESLint? · problems
✔ What type of modules does your project use? · esm
✔ Which framework does your project use? · react
✔ The React plugin doesn't officially support ESLint v9 yet. What would you like to do? · 9.x
✔ Does your project use TypeScript? · typescript
✔ Where does your code run? · browser
The config that you've selected requires the following dependencies:
eslint@9.x, globals, @eslint/js, typescript-eslint, eslint-plugin-react, @eslint/compat
✔ Would you like to install them now? · No / Yes
✔ Which package manager do you want to use? · npm
☕️Installing...
npm WARN using --force Recommended protections disabled.
```
## 3. Configure Husky
Starting with Husky v7, you need to configure Husky using husky commands and add hooks manually. First, initialize Husky:
```
npm install --save-dev husky
```
> If you face an error message `npm ERR! ERESOLVE could not resolve` error you're encountering when installing Husky, then follow Resolving the Conflict:
> Here are two approaches you can take:
> ### 1. Downgrade eslint:
> This approach aligns your eslint version with the requirements of eslint-plugin-react.
Run the following command to downgrade eslint to a compatible version (e.g., 8.22.0):
> ```
> npm install --save-dev eslint@8.22.0
> ```
> ### 2. Use --legacy-peer-deps (Cautionary Approach):
> This approach forces the installation but might lead to compatibility issues in the future. Use it with caution if downgrading isn't feasible.
Run the following command, but be aware of potential risks:
> ```
> npm install --save-dev husky --legacy-peer-deps
> ```
> After resolving the conflict:
> Re-run the original command to install husky:
```
npm install --save-dev husky
```
> ### Choosing the Best Approach:
> 1. Downgrading eslint is generally the recommended approach as it ensures compatibility and avoids potential issues. Check the documentation of the other packages in your project to ensure they are compatible with eslint@8.22.0.
> 2. Using --legacy-peer-deps should be a last resort. It might > lead to unexpected behavior or errors if the peer > dependencies are not truly compatible.
## 4. Initialize Husky
```
npx husky init
```
This will automatically configure Husky and add a basic .husky/pre-commit file (you can customize this later).
- Choose a configuration style (I recommend "JavaScript Standard Style").
- Select the features you want to enable/disable based on your project's needs.
This creates an `.eslintrc.json` file in your project root, which defines ESLint rules.
```
cat eslint.config.mjs
import globals from "globals";
import pluginJs from "@eslint/js";
import tseslint from "typescript-eslint";
import pluginReactConfig from "eslint-plugin-react/configs/recommended.js";
import { fixupConfigRules } from "@eslint/compat";
export default [
{languageOptions: { globals: globals.browser }},
pluginJs.configs.recommended,
...tseslint.configs.recommended,
...fixupConfigRules(pluginReactConfig),
];
```
## 5. Add Pre-commit Script (Optional):
It's time to create Husky Pre-commit Hook. In your package.json, add a husky section under scripts:
```
{
"scripts": {
"precommit": "eslint ."
}
}
```
This tells Husky to run eslint . (lint all files) before every git commit.
So, your final package.json will look like:
```
{
"devDependencies": {
"@eslint/compat": "^1.0.1",
"@eslint/js": "^9.3.0",
"eslint": "^8.22.0",
"eslint-plugin-react": "^7.34.1",
"globals": "^15.2.0",
"husky": "^9.0.11",
"lint-staged": "^15.2.2",
"typescript-eslint": "^7.9.0"
},
"scripts": {
"prepare": "husky"
"precommit": "eslint ."
}
}
```
## 6. Test Pre-commit Hook
- Create a file (e.g., test.js) with intentional linting errors (like missing semicolons).
- Try to commit your changes. Husky should prevent the commit and display ESLint errors.
## Conclusion
By following these steps, you ensure that your code is linted before every commit, maintaining code quality and consistency. If there are any linting errors, the commit will be blocked until they are resolved.
| ajeetraina | |
1,820,612 | "sh: next: command not found" in Next.js Development? Here's the Fix! | Ever run npm run dev in your Next.js project only to be greeted by the confusing sh: next: command... | 0 | 2024-05-26T04:29:26 | https://dev.to/ajeetraina/sh-next-command-not-found-in-nextjs-development-heres-the-fix-1ndb | Ever run `npm run dev` in your Next.js project only to be greeted by the confusing `sh: next: command not found` error? Don't worry, this is a common hurdle faced by developers, and it's easily fixable.
This error pops up because the next command isn't recognized by your terminal. It could be due to two reasons:
- **Next.js Installed Locally:** Most likely, Next.js is installed as a project dependency, not globally on your system.
- **Missing Script:** Your package.json might be missing the script that triggers the next dev command.
Let's explore solutions for both scenarios:
## Solution 1: Running Next.js Locally
If you prefer to keep Next.js specific to your project, follow these steps:
## 1. Utilize the Full Command
Since Next.js is a local dependency, you can directly run the development server using the full command:
```
npm run dev
```
This should trigger the script defined in your package.json (assuming it includes next dev).
## 2. Verify package.json Script:
Open your project's package.json and check for the "scripts" section. Make sure it contains the following script:
```
JSON
"scripts": {
"dev": "next dev"
}
```
If missing, add this script and try npm run dev again.
## Solution 2: Installing Next.js Globally (Optional)
This approach allows you to use next commands from any directory in your terminal. However, it's generally recommended to keep Next.js local to avoid version conflicts with other projects. Here's how to do it (use with caution):
### Global Installation:
```
npm install -g next
```
This installs Next.js globally on your system.
### Run Next.js Commands:
Now you can directly use commands like `next dev` or `next build` from any directory.
By following these solutions, you should be able to resolve the "sh: next: command not found" error and successfully launch your Next.js development server. Remember, keeping Next.js local is preferred for better project isolation.
Happy Coding! | ajeetraina | |
1,865,374 | How to Avoid Picking the Wrong Hair Dryer | Choosing the right hair dryer can be a daunting task with so many options available in the market.... | 0 | 2024-05-26T04:28:52 | https://dev.to/trex786720/how-to-avoid-picking-the-wrong-hair-dryer-2jnc | Choosing the right hair dryer can be a daunting task with so many options available in the market. Here are some tips to help you avoid picking the wrong hair dryer, ensuring you get the best results for your hair type and styling needs.
1. **Consider Your Hair Type**
Different hair types require different levels of heat and airflow. Here’s what to look for:
- **Fine Hair:** Opt for a hair dryer with adjustable heat settings and a cool shot button to avoid heat damage.
- **Thick or Curly Hair:** Look for a dryer with a higher wattage (at least 1800 watts) to ensure efficient drying. A diffuser attachment can also help enhance natural curls.
- **Frizzy Hair:** Choose an ionic or tourmaline hair dryer, which helps reduce frizz and static by emitting negative ions.
## 2. **Check the Wattage**
The wattage of a hair dryer determines its power:
- **Low Wattage (below 1800 watts):** Suitable for fine or thin hair.
- **High Wattage (1800 watts and above):** Ideal for thick, coarse, or curly hair, as it dries hair faster and more efficiently.
## 3. **Look for Heat and Speed Settings**
A good hair dryer should offer multiple heat and speed settings to give you control over the drying process:
- **Low Settings:** Perfect for fine or damaged hair.
- **High Settings:** Great for thick or coarse hair.
- **Cool Shot Button:** Helps set your hairstyle and add shine.
## 4. **Consider the Weight and Design**
Comfort is key, especially if you have long hair that takes time to dry:
- **Lightweight Models:** Easier to handle and less tiring to use.
- **Ergonomic Design:** A comfortable grip makes the drying process more enjoyable.
## 5. **Attachments Matter**
Attachments can enhance your styling capabilities:
- **Concentrator Nozzle:** Directs the airflow for precise styling and smooth finishes.
- **Diffuser:** Distributes air evenly to maintain curls and reduce frizz.
- **Comb Attachments:** Useful for straightening and detangling hair.
## 6. **Check for Advanced Features**
Some advanced features can make a big difference:
- **Ionic Technology:** Reduces frizz and speeds up drying time.
- **Ceramic and Tourmaline:** Provides even heat distribution and minimizes heat damage.
- **Infrared Heat:** Penetrates hair evenly and quickly, reducing drying time.
## 7. **Read Reviews and Ratings**
Customer reviews and ratings can provide valuable insights into the performance and durability of a hair dryer. Look for products with high ratings and positive feedback.
## 8. **Consider Your Budget**
Hair dryers come in a wide range of prices:
- **Budget Models:** Affordable options with basic features, suitable for occasional use.
- **Mid-Range Models:** Offer a good balance of features and quality.
- **High-End Models:** Provide advanced technology and durability, suitable for regular use and professional results.
## **Check Out Our Recommended Hair Dryer**
To save you the hassle of searching, we recommend a versatile and reliable hair dryer that suits various hair types and styling needs. Check out our [high-quality portable hair dryer](https://www.ebay.ca/itm/305586144332) available on eBay. This hair dryer offers multiple heat and speed settings, advanced ionic technology, and comes with essential attachments for all your styling needs. Don't miss out on this great deal!
[https://butzlaw.ca/mediation/]
By following these tips, you can ensure you choose a hair dryer that meets your needs and keeps your [Adult and Children's therapy](https://wildflowerschild.com/). | trex786720 | |
1,827,874 | Kubernetes Service External IP Stuck on Pending? Here's How to Fix It | Have you ever encountered a situation where your Service's external IP address stubbornly stays in... | 0 | 2024-05-26T04:28:42 | https://dev.to/ajeetraina/kubernetes-service-external-ip-stuck-on-pending-heres-how-to-fix-it-43dh | Have you ever encountered a situation where your Service's external IP address stubbornly stays in "pending" mode? We've all been there. In this post, we'll delve into this common Minikube issue and explore two effective solutions to get that external IP up and running.
## Understanding the LoadBalancer Service
In Kubernetes, the LoadBalancer service type shines when you need to expose network applications to the external world. It's ideal for scenarios where you want a dedicated IP address assigned to each service.
On public cloud platforms like AWS or Azure, the LoadBalancer service seamlessly deploys a network load balancer in the cloud. However, Minikube takes a different approach. It simulates a load balancer using the tunnel protocol, and by default, the service's external IP gets stuck on "pending."
## Setting Up the Example
Before diving into solutions, let's set up a simple example using namespaces and deployments:
### Create a Namespace:
```
kubectl create ns service-demo
```
### Deploy a Redis Pod:
```
kubectl create deploy redis --image=redis:alpine -n service-demo
```
### Verify the Pod:
```
kubectl get pods -n service-demo
```
This creates a namespace (service-demo) and deploys a Redis pod within it. We'll use this example to showcase exposing the Redis server externally.
## Fixing the Pending External IP
Now, let's tackle that pesky "pending" status! Here are two methods to assign an external IP address to the LoadBalancer service in Minikube:
## Method 1: Using Minikube Tunnel
The LoadBalancer service thrives when the cluster supports external load balancers. While Minikube doesn't provide a built-in implementation, it allows simulating them through network routes. Here's how:
### Create a LoadBalancer Service:
```
kubectl expose deploy redis --port 6379 --type LoadBalancer -n service-demo
```
### Check the External IP:
```
kubectl get service -n service-demo
```
You'll see the "EXTERNAL-IP" column showing "<pending>". Don't worry, we'll fix that!
## Establish the Minikube Tunnel:
```
minikube tunnel
```
This command sets up network routes using the load balancer emulator.
## Verify the IP Again:
```
kubectl get service -n service-demo
```
Now you should see a newly allocated external IP address. That's your gateway to the Redis server!
### Access the Redis Server (Optional):
```
redis-cli -h <EXTERNAL_IP> PING
```
Replace <EXTERNAL_IP> with the actual IP you obtained. If everything's configured correctly, you'll receive a "PONG" response, indicating successful communication.
## Method 2: Using MetalLB Addon
Similar to the tunnel approach, MetalLB is another load balancer option for assigning external IPs. Minikube offers an addon specifically for MetalLB, allowing easy configuration. Here's how to use it:
### Enable the MetalLB Addon:
```
minikube addons enable metallb
```
### Verify Addon Status:
```
minikube addons list
```
This ensures the addon is up and running.
### Configure MetalLB (Optional):
By default, MetalLB uses a specific IP range. To customize this, find the Minikube node's IP address using minikube ip and then run:
```
minikube addons configure metallb
```
Specify the desired IP address range during the configuration process.
### Create a LoadBalancer Service:
```
kubectl expose deploy redis --port 6379 --type LoadBalancer -n service-demo
```
### Check the External IP:
```
kubectl get service -n service-demo
```
The "EXTERNAL-IP" column should now display an IP address within the configured range.
### Access the Redis Server (Optional):
Use the service's external IP address obtained in step 5 to connect to the Redis server using redis-cli.
## Cleaning Up
## Method 1 Cleanup (Tunnel):
In the first terminal window, press Ctrl + C to terminate the tunnel process and remove network routes.
### Delete the service:
```
kubectl delete svc redis -n service-demo
```
## Method 2 Cleanup (MetalLB):
Important Note: The provided cleanup steps involve deleting the entire namespace, which is suitable for testing environments only. In production, avoid bulk deletions and target specific resources.
```
kubectl delete ns service-demo
```
## Conclusion
This blog post explored two effective solutions to address the "pending" external IP issue in Minikube's LoadBalancer services: the tunnel protocol and the MetalLB addon. Remember, the best approach depends on your specific needs and environment.
Feel free to experiment and choose the method that best suits your Kubernetes journey! And as always, if you have any questions or comments, don't hesitate to reach out within the next 30 days. Happy Deployments! | ajeetraina |
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