id int64 5 1.93M | title stringlengths 0 128 | description stringlengths 0 25.5k | collection_id int64 0 28.1k | published_timestamp timestamp[s] | canonical_url stringlengths 14 581 | tag_list stringlengths 0 120 | body_markdown stringlengths 0 716k | user_username stringlengths 2 30 |
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1,918,617 | Multiple Parallel AI Streams with the Vercel AI SDK | The Vercel AI SDK makes it easy to interact with LLM APIs like OpenAI, Anthropic and so on, and... | 0 | 2024-07-10T14:10:42 | https://mikecavaliere.com/posts/multiple-parallel-streams-vercel-ai-sdk | ai, typescript, javascript, react | The Vercel AI SDK makes it easy to interact with LLM APIs like OpenAI, Anthropic and so on, and stream the data so it shows up in your web app rapidly as it loads. In this article we’ll learn how to run multiple prompts at the same time and see their results in parallel.
TL;DR: GitHub Repo is [here](https://github.com/mcavaliere/vercel-ai-sdk-parallel-streams).
## Why would I want to do this?
It’s not uncommon in a web app to want to run multiple data-fetching requests at the same time. For example, in a hypothetical blogging system, when the dashboard interface loads, we might want to fetch the user’s profile data, posts they’ve created, and other user’s posts they’ve favorited all at the same time.
If the same dashboard was making requests to OpenAI at the same time, we might want to simultaneously ask OpenAI for tips on improving the user’s profile, and an analysis of their latest post at the same time. In theory we could use dozens of AI requests in parallel if we wanted to (even from completely different platforms and models), and and analyze information, generate content, and do all types of other tasks at the same time.
## Installation & Setup
You can clone the GitHub repo containing the final result [here](https://github.com/mcavaliere/vercel-ai-sdk-parallel-streams).
**To set up from scratch:**
1. Follow the **[Next.js App Router Quickstart](https://sdk.vercel.ai/docs/getting-started/nextjs-app-router#nextjs-app-router-quickstart).** Just the basics; generate the app, install dependencies, and add your OpenAI API key.
2. Install and set up [shadcn/ui](https://ui.shadcn.com/docs/installation/next).
## Setting up basic UI
The main component that does all the work will contain a form and some containers for the output. Using some basic shadcn-ui components, the form will look like this:
```tsx
export function GenerationForm() {
// State and other info will be defined here...
return (
<form onSubmit={onSubmit} className="flex flex-col gap-3 w-full">
<div className="inline-block mb-4 w-full flex flex-row gap-1">
<Button type="submit">Generate News & Weather</Button>
</div>
{isGenerating ? (
<div className="flex flex-row w-full justify-center items-center p-4 transition-all">
<Spinner className="h-6 w-6 text-slate-900" />
</div>
) : null}
<h3 className="font-bold">Historical Weather</h3>
<div className="mt-4 mb-8 p-4 rounded-md shadow-md bg-blue-100">
{weather ? weather : null}
</div>
<h4 className="font-bold">Historical News</h4>
<div className="mt-4 p-4 rounded-md shadow-md bg-green-100">{news ? news : null}</div>
</form>
)
}
```
You can see that we have a few things here:
- A form
- A loading animation (and an `isGenerating` flag for showing/hiding it)
- A container for rendering weather content
- A container for rendering news content
For now you can hardcode these values; they’ll all be pulled from our streams.
## Setting up the React Server Components (RSCs)
The streamAnswer server action is what will do the work of creating and updating our streams.
The structure of the action is this:
```jsx
export async function streamAnswer(question: string) {
// Booleans for indicating whether each stream is currently streaming
const isGeneratingStream1 = createStreamableValue(true);
const isGeneratingStream2 = createStreamableValue(true);
// The current stream values
const weatherStream = createStreamableValue("");
const newsStream = createStreamableValue("");
// Create the first stream. Notice that we don't use await here, so that we
// don't block the rest of this function from running.
streamText({
// ... params, including the LLM prompt
}).then(async (result) => {
// Read from the async iterator. Set the stream value to each new word
// received.
for await (const value of result.textStream) {
weatherStream.update(value || "");
}
} finally {
// Set isGenerating to false, and close that stream.
isGeneratingStream1.update(false);
isGeneratingStream1.done();
// Close the given stream so the request doesn't hang.
weatherStream.done();
}
});
// Same thing for the second stream.
streamText({
// ... params
}).then(async (result) => {
// ...
})
// Return any streams we want to read on the client.
return {
isGeneratingStream1: isGeneratingStream1.value,
isGeneratingStream2: isGeneratingStream2.value,
weatherStream: weatherStream.value,
newsStream: newsStream.value,
};
}
```
## Writing the client code
The form’s `onSubmit` handler will do all the work here. Here’s the breakdown of how it works:
```tsx
"use client";
import { SyntheticEvent, useState } from "react";
import { Button } from "./ui/button";
import { readStreamableValue, useUIState } from "ai/rsc";
import { streamAnswer } from "@/app/actions";
import { Spinner } from "./svgs/Spinner";
export function GenerationForm() {
// State for loading flags
const [isGeneratingStream1, setIsGeneratingStream1] = useState<boolean>(false);
const [isGeneratingStream2, setIsGeneratingStream2] = useState<boolean>(false);
// State for the LLM output streams
const [weather, setWeather] = useState<string>("");
const [news, setNews] = useState<string>("");
// We'll hide the loader when both streams are done.
const isGenerating = isGeneratingStream1 || isGeneratingStream2;
async function onSubmit(e: SyntheticEvent) {
e.preventDefault();
// Clear previous results.
setNews("");
setWeather("");
// Call the server action. The returned object will have all the streams in it.
const result = await streamAnswer(question);
// Translate each stream into an async iterator so we can loop through
// the values as they are generated.
const isGeneratingStream1 = readStreamableValue(result.isGeneratingStream1);
const isGeneratingStream2 = readStreamableValue(result.isGeneratingStream2);
const weatherStream = readStreamableValue(result.weatherStream);
const newsStream = readStreamableValue(result.newsStream);
// Iterate through each stream, putting its values into state one by one.
// Notice the IIFEs again! As on the server, these allow us to prevent blocking
// the function, so that we can run these iterators in parallel.
(async () => {
for await (const value of isGeneratingStream1) {
if (value != null) {
setIsGeneratingStream1(value);
}
}
})();
(async () => {
for await (const value of isGeneratingStream2) {
if (value != null) {
setIsGeneratingStream2(value);
}
}
})();
(async () => {
for await (const value of weatherStream) {
setWeather((existing) => (existing + value) as string);
}
})();
(async () => {
for await (const value of newsStream) {
setNews((existing) => (existing + value) as string);
}
})();
}
return (
// ... The form code from before.
);
}
```
## Other fun things to try
- Streaming structured JSON data instead of text using `streamObject()`
- Streaming lots more things in parallel
- Streaming from different APIs at once
- Streaming different models with the same prompts for comparison (e.g., Cohere, Anthropic, Gemini, etc.)
- Streaming the UI from the server (using `createStreamableUI()` )
## Further reading & links
- [Server Actions and Mutations](https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations)
- [Vercel AI SDK](https://sdk.vercel.ai/docs/introduction)
- [`streamText()`](https://sdk.vercel.ai/docs/reference/ai-sdk-core/stream-text) API docs
- [Next.js App Router Quickstart](https://sdk.vercel.ai/docs/getting-started/nextjs-app-router#nextjs-app-router-quickstart) | mcavaliere |
1,918,618 | Getting Started with .NET Aspire: Simplifying Cloud-Native Development | TL;DR: Discover .NET Aspire, a powerful stack simplifying cloud-native app development with... | 0 | 2024-07-10T16:31:43 | https://www.syncfusion.com/blogs/post/dotnet-aspire-cloud-native-dev | net, dotnet, cloud, development | ---
title: Getting Started with .NET Aspire: Simplifying Cloud-Native Development
published: true
date: 2024-07-10 13:48:50 UTC
tags: net, dotnet, cloud, development
canonical_url: https://www.syncfusion.com/blogs/post/dotnet-aspire-cloud-native-dev
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/budh7mph0z5n29yc956u.png
---
**TL;DR:** Discover .NET Aspire, a powerful stack simplifying cloud-native app development with standardized components, enhanced tooling, and seamless orchestration. Learn to deploy and manage apps effortlessly with Azure integration.
Today, we’ll explore .NET Aspire, an exciting new technology making waves in the .NET community. This article provides an easy-to-understand introduction to orchestration in .NET Aspire, focusing on its benefits and capabilities. Let’s discover how .NET Aspire contributes to advancements in our daily development.
## What is .NET Aspire?
.NET Aspire is a powerful, cloud-native framework for building observable, production-ready distributed applications. It consists of the following three main capabilities:
- **Orchestration:** Simplifies configuration and interconnection of application components, reducing complexity and development time.
- **Components:** NuGet packages streamline integration with services like Redis and PostgreSQL, providing standardized configurations and automatic injection for efficient service communication.
- **Tooling:** Visual Studio and .NET CLI integrations with standardized project templates and pre-configured components like **.AppHost** and **.ServiceDefaults** streamline development and scaling.
Let’s dive deeper into what makes .NET Aspire unique and valuable.
## Benefits of .NET Aspire
- **Productivity:** Automating various tasks related to configuring and managing cloud-native applications, .NET Aspire allows developers to focus on writing business logic and delivering features.
- **Consistency:** Standardized components and configurations ensure that applications are built using best practices, reducing the likelihood of errors and inconsistencies.
- **Scalability:** Designed to handle the complexities of distributed systems, .NET Aspire makes it easier to build apps that can scale to meet increasing demand.
- **Observability:** Comprehensive logging, telemetry, and health check features provide deep insights into the app’s behavior, making it easier to monitor and maintain.
## Prerequisites
To get started with .NET Aspire, you need the following:
- [.NET 8](https://dotnet.microsoft.com/en-us/download/dotnet/8.0 "Download .NET 8.0")
- [Visual Studio 2022 Preview](https://visualstudio.microsoft.com/vs/preview/ "Visual Studio 2022 Preview")
- **.NET Aspire workload:** Install it using the .NET CLI with the commands:
```
1. dotnet workload update aspire // Updates Aspire to the latest version.
2. dotnet workload install aspire // Installs Aspire.
3. dotnet workload list // Checks the version of .NET Aspire.
```
- [Rancher Desktop](https://rancherdesktop.io/ "Rancher Desktop by SUSE") / [Docker Desktop](https://www.docker.com/products/docker-desktop/ "Docker Desktop Site")
- **Chocolatey:** Install Chocolatey to deploy apps on Azure. Follow the instructions in the [Chocolatey Windows Installation Guide](https://phoenixnap.com/kb/chocolatey-windows#:~:text=Install%20via%20Command%20Line,-Follow%20the%20steps&text=Press%20the%20Windows%20key%20and,the%20Run%20as%20administrator%20option.&text=Wait%20for%20the%20installation%20process,environment%20variables%20are%20loaded%20correctly "Chocolatey Windows Installation Guide").
- **Azure connection setup** : Set up your environment for connecting to Azure with these commands:
```
1. choco install azd
2. azd
3. azd auth login
```
## .NET Aspire vs. .NET Aspire Starter application
When starting with .NET Aspire, you may notice two templates: the **.NET Aspire Application** and the **.NET Aspire Starter Application**. Here’s a comparison to help you understand their uses and differences:
### .NET Aspire application
- **Purpose:** Provides a fully-featured setup with all essential components needed for building cloud-native apps.
- **Components:** Includes **ApiService, AppHost, ServiceDefaults,** and **Web** projects.
- **Use Case:** Ideal for developers looking to create a comprehensive, production-ready app with full orchestration and integration capabilities.
### .NET Aspire Starter application
- **Purpose:** Offers a simplified setup for quickly getting started with .NET Aspire, focusing on the basics.
- **Components:** Typically includes fewer projects and configurations, providing a more lightweight and streamlined approach.
- **Use case:** Best suited for developers new to .NET Aspire who want to experiment and learn the fundamentals before moving on to a full-scale app.
## Creating your first .NET Aspire Starter project
Follow these steps to build your first project with .NET Aspire:
### Step 1: Setup the project
1.Open **Visual Studio 2022 Preview**.
2.Search for the **.NET Aspire Starter Application** template and select the one that fits your needs.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Find-.NET-Template.png)
3.Provide the project **Solution name** and **Location** in the appropriate fields, then click **Next**.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Set-Project-Name-Choose-Location-Click-Next.png)
4.After that, continue with the default target framework to complete the project creation.
### Step 2: Understand the project structure
After creating the project solution, you will see the following projects.
- **ApiService** : This component serves as the backend API provider, handling requests and responses between the **front-end Web application** and the **database** or other services. It manages data access and business logic, ensuring efficient communication and processing.
- **AppHost** : As the central orchestrator, AppHost coordinates the execution of all projects within the .NET Aspire app. It manages dependencies, sets up configuration settings, and ensures seamless integration between different components like **ApiService** and **Web.**
- **ServiceDefaults** : This component is crucial in managing and configuring dependencies across the app. It provides a standardized approach to configuring services, enabling easier scalability and maintenance of the app.
- **Web** : The Web component serves as the front-end interface, utilizing Blazor to interact with the **ApiService**. It handles user interactions, displays data fetched from the backend, and provides a responsive user interface for seamless user experience.
Refer to the following image.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Project-Solution-ApiService-AppHost-ServiceDefaults-Web.png)
### Step 3: Execute the project locally
1.Set the **AppHost** project as the startup project. This project will orchestrate the others.
2.Update the **Program.cs file** with the following code.
```csharp
var builder = DistributedApplication.CreateBuilder(args);
var apiservice = builder.AddProject<Projects.AspireApp_ApiService>("apiservice");
builder.AddProject<Projects.AspireApp_Web>("webfrontend")
.WithReference(apiservice);
builder.Build().Run();
```
This code references the web-frontend project with the API service project.
3.Press **F5** to execute the project.
### Step 4: Explore the .NET Aspire dashboard
Once the project starts, you will see the .NET Aspire Dashboard. Here, you can monitor various aspects of your app.
Refer to the following images. 
[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Start-Project-View-.NET-Aspire-Dashboard.png)
- **Resources** : This section provides essential information about each .NET project in your .NET Aspire setup, including app status, endpoint addresses, and loaded environment variables.
- **Project** : Lists each microservice as a Project within the dashboard.
- **Container** : Shows supporting services like Redis caches, represented as Containers.
- **Executable** : Displays other components that function as Executables.
- **Console Logs** : Shows text sent to standard output, used for events or status messages.
- **Structured Logs** : Presents logs in a table format, supporting basic filtering, search, and log level adjustments. You can expand log details by clicking the **View** button.
- **Endpoints** : Lists endpoints for microservices, allowing direct connection and testing in your browser.
- **Traces** : Tracks request paths throughout your app. For instance, view requests for /weather to see its journey through different parts of your app.
- **Metrics** : Displays exposed instruments and meters with their dimensions, optionally providing filters based on available dimensions.
Afterward, navigate from the home page to the weather page using the left-side navigation, where you’ll find detailed weather data.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Navigate-Home-to-Weather-for-Detailed-Data.png)
## Create a .NET Aspire application
In Visual Studio 2022 Preview, create a new project using the **.NET Aspire Application** template. Select a solution name, location, and framework (choose **.NET 8 Long-Term Support** ).[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Create-.NET-Aspire-Project-in-VS-2022-Preview.png)
After that, continue with the default target framework to complete the project creation. This creates a basic .NET Aspire environment with essential projects, including an **AppHost** and **ServiceDefaults**.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Complete-Project-with-Default-.NET-Framework.png)
### Create an ASP.NET Core Web API app as a back-end web service
1.Right-click the **Solution project -> Add -> New Project** in the Visual Studio menu bar.
2.Select the **ASP.NET Core Web API application** and click **Next**.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Choose-ASP.NET-Core-Web-API-Click-Next.png)
3.Then, continue with the default target framework to complete the project creation. This will set up a basic ASP.NET Core Web API project that can serve as your back-end web service.
4.Next, we plan to add new items to the to-do list and delete them once completed. We’ll add three operations: **Get** , **Post** , and **Delete**. Create a separate class named **TodoController.cs** in the **Controllers** folder and include the following code.
```csharp
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
namespace AspireAppAPIService.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class TodoController : ControllerBase
{
private static readonly List<string> todos = new List<string>();
// GET: api/todo
[HttpGet]
public ActionResult<IEnumerable<string>> Get()
{
return Ok(todos);
}
// POST: api/todo
[HttpPost]
public ActionResult Post([FromBody] string todo)
{
if (string.IsNullOrWhiteSpace(todo))
{
return BadRequest("Todo item cannot be empty");
}
todos.Add(todo);
return Ok();
}
// DELETE: api/todo/{index}
[HttpDelete("{index}")]
public ActionResult Delete(int index)
{
if (index < 0 || index >= todos.Count)
{
return NotFound("Todo item not found");
}
todos.RemoveAt(index);
return Ok();
}
}
}
```
### Create a Blazor app as a front-end
To integrate a front-end into your .NET Aspire app, follow these steps:
1.Right-click on the **Solution project -> Add -> New Project** in the Visual Studio menu bar.
2.Select **Blazor Web App** and click **Next**.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Pick-Blazor-Web-App-Proceed-with-Next.png)
3.Continue with the default target framework to complete the project creation.
#### Implementing a to-do list feature
After setting up the Blazor project, implement a simple **To-do list** feature. Create a **TodoService.cs** class to interact with your Web API endpoints. This class manages tasks such as retrieving, adding, and deleting to-do items from the server.
Refer to the following code example.
```csharp
using System.Net.Http;
using System.Net.Http.Json;
using System.Threading.Tasks;
using System.Collections.Generic;
public class TodoService
{
private readonly HttpClient _httpClient;
public TodoService(HttpClient httpClient)
{
_httpClient = httpClient;
}
public async Task<List<string>> GetTodosAsync()
{
return await _httpClient.GetFromJsonAsync<List<string>>("api/todo");
}
public async Task AddTodoAsync(string todo)
{
await _httpClient.PostAsJsonAsync("api/todo", todo);
}
public async Task DeleteTodoAsync(int index)
{
await _httpClient.DeleteAsync($"api/todo/{index}");
}
}
```
Next, design the UI for your to-do list by creating a new Razor component named **Todo.razor** and adding the following code.
```xml
@page "/todo"
@inject TodoService TodoService
<h3>To-Do List</h3>
<div class="input-group mb-3">
<input @bind="newTodo" class="form-control" placeholder="Enter new to-do item" />
<button @onclick="AddTodo" class="btn btn-primary">Add</button>
</div>
<ul class="list-group">
@foreach (var todo in todos)
{
<li class="list-group-item d-flex justify-content-between align-items-center">
@todo
<button @onclick="() => DeleteTodo(todo)" class="btn btn-danger btn-sm">Delete</button>
</li>
}
</ul>
@if (todos.Count == 0)
{
<p>No to-do items yet.</p>
}
@code {
private List<string> todos = new List<string>();
private string newTodo;
protected override async Task OnInitializedAsync()
{
await LoadTodos();
}
private async Task LoadTodos()
{
todos = await TodoService.GetTodosAsync();
}
private async Task AddTodo()
{
if (!string.IsNullOrWhiteSpace(newTodo))
{
await TodoService.AddTodoAsync(newTodo);
await LoadTodos();
newTodo = string.Empty;
}
}
private async Task DeleteTodo(string todo)
{
var index = todos.IndexOf(todo);
if (index != -1)
{
await TodoService.DeleteTodoAsync(index);
await LoadTodos();
}
}
}
```
After creating **Todo.razor** , add it to the navigation menu ( **NavMenu.razor** ) under the **Layout** folder.
```xml
<div class="nav-item px-3">
<NavLink class="nav-link" href="todo">
<span class="bi bi-list-nested-nav-menu" aria-hidden="true"></span> To-Do List
</NavLink>
</div>
```
Next, configure an **HttpClient** with a **BaseAddress** in the **Program.cs** file of your web app project to establish communication with the Web API.
```csharp
builder.Services.AddHttpClient<TodoService>(client => client.BaseAddress = new("http://apiservice"));
```
### Connecting ASP.NET web app and Web API project
To connect the ASP.NET web app with the Web API in your .NET Aspire solution, modify the **Program.cs** file in the **AspireApp.AppHost** project. Include both the Web API and Web application projects using the following code.
```csharp
var builder = DistributedApplication.CreateBuilder(args);
var apiservice = builder.AddProject<Projects.AspireAppAPIService>("apiservice");
builder.AddProject<Projects.AspireWebApp>("webfrontend").WithReference(apiservice);
builder.Build().Run();
```
This setup allows the Web app to communicate with the Web API without requiring direct references between the projects. The .NET Aspire framework manages this communication pipeline.
### Execute the project locally
Run the **AppHost** project as the startup project or press **F5**.
The Web application (front-end) and Web API (back-end) projects will appear on the Dashboard, as shown in the screenshot below. From this dashboard, you can monitor logs, metrics, and tracing and facilitate communication between the two apps without needing direct references or specific URLs.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Run-AppHost-Monitor-Apps-on-Dashboard.png)
**Back-end view** [](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Back-end-View.png)
**Front-end view** [](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Front-end-View.gif)
## Deploying the app in Azure
For deployment in Azure, follow these steps:
1.Open the **AppHost** project in **PowerShell**.
2.Initialize Azure using the **azd init** command and enter the environment name, e.g., **AspireApp**.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/07/Initialize-Azure-with-azd-init-Set-Name.png)
3.Execute the **azd up** command to deploy the app using the generated **Azure.yaml** and **next-steps.md** files. 
4.Once deployed, access the app via the provided **endpoint** link.
## Conclusion
In this blog, we explored how .NET Aspire simplifies the development of cloud-native applications by providing essential components and tools. With its standardized configurations, enhanced tooling, and robust orchestration capabilities, .NET Aspire enhances productivity and reduces complexity for developers. By deploying our app to Azure, we demonstrated the seamless integration and management capabilities of .NET Aspire in modern cloud environments.
The latest version of [Essential Studio](https://www.syncfusion.com/forums/188642/essential-studio-2024-volume-2-main-release-v26-1-35-is-available-for-download "Essential Studio 2024 Volume 2")—Syncfusion’s collection of eighteen-hundred-plus UI components and frameworks for mobile, web, and desktop development—is available for current customers from the [License and Downloads](https://www.syncfusion.com/account "Essential Studio License and Downloads page") page. If you are not a Syncfusion customer, you can start a 30-day [free trial](https://www.syncfusion.com/downloads "Get free evaluation of Essential Studio products") to try all the components.
If you have questions, contact us through our [support forums](https://www.syncfusion.com/forums "Syncfusion Support Forum"), [support portal](https://support.syncfusion.com/ "Syncfusion Support Portal"), or [feedback portal](https://www.syncfusion.com/feedback/ "Syncfusion Feedback Portal"). We are always happy to assist you!
## Related blogs
- [What’s New in .NET 8 for Developers?](https://www.syncfusion.com/blogs/post/whats-new-dot-net-8-for-developers "Blog: What’s New in .NET 8 for Developers?")
- [What’s New in C# 13 for Developers?](https://www.syncfusion.com/blogs/post/whats-new-csharp-13-for-developers "Blog: What’s New in C# 13 for Developers?")
- [Syncfusion Essential Studio 2024 Volume 2 Is Here!](https://www.syncfusion.com/blogs/post/syncfusion-essential-studio-2024-vol2 "Blog: Syncfusion Essential Studio 2024 Volume 2 Is Here!")
- [Deploying a .NET Core Application in Azure Kubernetes](https://www.syncfusion.com/blogs/post/deploying-a-net-core-application-in-azure-kubernetes "Blog: Deploying a .NET Core Application in Azure Kubernetes") | jollenmoyani |
1,918,621 | Kubernetes Cluster Migration Strategies: A Comprehensive Guide | Kubernetes cluster migration is a critical process that involves transferring workloads from one... | 0 | 2024-07-10T14:19:12 | https://dev.to/platform_engineers/kubernetes-cluster-migration-strategies-a-comprehensive-guide-282b |
Kubernetes cluster migration is a critical process that involves transferring workloads from one cluster to another. This process can be complex and requires careful planning to ensure minimal disruption to applications and services. In this blog, we will explore various strategies for Kubernetes cluster migration, highlighting the tools and techniques involved.
### Strategies for Kubernetes Cluster Migration
1. **Replatforming VMs**
Replatforming involves deploying existing virtual machines (VMs) on Kubernetes with minimal changes. This approach is the fastest way to migrate to Kubernetes but does not fully utilize the benefits of Kubernetes. It is suitable for teams that need to quickly transition to Kubernetes without significant application refactoring.
```bash
# Example of deploying a VM on Kubernetes
kubectl apply -f vm-deployment.yaml
```
2. **Refactoring**
Refactoring involves breaking down monolithic applications into microservices, making them horizontally scalable and resilient. This approach requires significant investment but yields long-term benefits in terms of scalability and portability across clouds.
```bash
# Example of refactoring an application into microservices
kubectl apply -f microservice1-deployment.yaml
kubectl apply -f microservice2-deployment.yaml
```
3. **Rearchitecting**
Rearchitecting involves designing infrastructure and applications from scratch to accommodate Kubernetes. This approach is ideal for new applications or major system overhauls but requires significant upfront effort.
```bash
# Example of rearchitecting an application for Kubernetes
kubectl apply -f rearchitected-app-deployment.yaml
```
### Tools for Kubernetes Cluster Migration
1. **Velero**
Velero is a popular tool for backing up and restoring Kubernetes clusters. It can be used to create disaster recovery environments and migrate clusters.
```bash
# Example of using Velero to backup a cluster
velero backup create cluster-backup --include-resources deployments,jobs,cm
```
2. **Infrastructure-as-Code**
Infrastructure-as-Code (IaC) tools like Terraform or Ansible can be used to manage cluster configurations and facilitate migration. These tools allow for declarative configuration management, making it easier to replicate environments.
```bash
# Example of using Terraform to manage cluster infrastructure
terraform apply -var-file=cluster-config.tfvars
```
### Best Practices for Kubernetes Cluster Migration
1. **Assess Readiness**
Assessing the current environment and identifying potential challenges is crucial for a successful migration. This involves understanding the current infrastructure, applications, and workloads.
2. **Create a Migration Timeline**
Creating a realistic timeline for the migration process helps ensure that the transition is smooth and well-planned.
3. **Post-Migration Testing and Optimization**
Testing and optimizing applications after migration is essential to ensure they function as expected in the new environment. This involves using tools like Kubernetes-based testing frameworks, load testing tools, or service mesh tools.
### Conclusion
Kubernetes cluster migration requires careful planning and execution. By understanding the various strategies and tools available, teams can choose the approach that best suits their needs. Whether replatforming, refactoring, or rearchitecting, a well-planned migration ensures minimal disruption to applications and services. **Platform Engineering** on Kubernetes demands expertise, and this guide provides a comprehensive overview of the tools and techniques involved in a successful migration. | shahangita | |
1,918,627 | World Animals Foundation: A Global Advocate for Animal Welfare and Conservation | The World Animals Foundation (WAF) is a global organization dedicated to the protection,... | 0 | 2024-07-10T14:26:15 | https://dev.to/katobhi/world-animals-foundation-a-global-advocate-for-animal-welfare-and-conservation-54cj | The [World Animals Foundation (WAF)](https://worldanimalsfoundation.org/) is a global organization dedicated to the protection, preservation, and welfare of animals worldwide. They focus on various aspects of animal welfare, including habitat conservation, protection of endangered species, and the promotion of humane treatment of animals. Here are some key aspects of WAF's work:
Conservation Efforts: WAF works to protect natural habitats and ecosystems, ensuring that animals have safe and sustainable environments in which to live. This includes efforts to combat deforestation, pollution, and climate change.
Endangered Species Protection: The organization focuses on the protection of endangered species, implementing programs to prevent poaching, illegal trade, and habitat destruction. They also support breeding programs and other initiatives to increase population numbers of threatened species.
Advocacy and Education: WAF engages in advocacy to promote animal rights and welfare. They work to influence policy and legislation at local, national, and international levels. Additionally, they provide educational resources and programs to raise awareness about animal welfare issues.
Rescue and Rehabilitation: The foundation [ Dog's Crate Size](https://worldanimalsfoundation.org/dog-crate-size-calculator/) is involved in the rescue and rehabilitation of animals that have been abused, neglected, or displaced. They operate shelters and rehabilitation centers, providing medical care and support to help animals recover and find new homes.
Community Engagement: WAF collaborates with local communities, encouraging sustainable practices that benefit both humans and animals. They work to create programs that support wildlife conservation while also providing economic and social benefits to communities.
The efforts of the World Animals Foundation contribute significantly to the global movement towards better animal welfare and environmental sustainability. Their comprehensive approach helps address the complex challenges facing animals today, ensuring a better future for both wildlife and human populations. | katobhi | |
1,918,628 | World Animals Foundation: A Global Advocate for Animal Welfare and Conservation | The World Animals Foundation (WAF) is a global organization dedicated to the protection,... | 0 | 2024-07-10T14:27:56 | https://dev.to/katobhi/world-animals-foundation-a-global-advocate-for-animal-welfare-and-conservation-25p1 | The [World Animals Foundation (WAF)](https://worldanimalsfoundation.org/) is a global organization dedicated to the protection, preservation, and welfare of animals worldwide. They focus on various aspects of animal welfare, including habitat conservation, protection of endangered species, and the promotion of humane treatment of animals. Here are some key aspects of WAF's work:
Conservation Efforts: WAF works [Dog's Crate Size](https://worldanimalsfoundation.org/dog-crate-size-calculator/) to protect natural habitats and ecosystems, ensuring that animals have safe and sustainable environments in which to live. This includes efforts to combat deforestation, pollution, and climate change.
Endangered Species Protection: The organization focuses on the protection of endangered species, implementing programs to prevent poaching, illegal trade, and habitat destruction. They also support breeding programs and other initiatives to increase population numbers of threatened species.
Advocacy and Education: WAF engages in advocacy to promote animal rights and welfare. They work to influence policy and legislation at local, national, and international levels. Additionally, they provide educational resources and programs to raise awareness about animal welfare issues.
Rescue and Rehabilitation: The foundation is involved in the rescue and rehabilitation of animals that have been abused, neglected, or displaced. They operate shelters and rehabilitation centers, providing medical care and support to help animals recover and find new homes.
Community Engagement: WAF collaborates with local communities, encouraging sustainable practices that benefit both humans and animals. They work to create programs that support wildlife conservation while also providing economic and social benefits to communities.
The efforts of the World Animals Foundation contribute significantly to the global movement towards better animal welfare and environmental sustainability. Their comprehensive approach helps address the complex challenges facing animals today, ensuring a better future for both wildlife and human populations. | katobhi | |
1,918,630 | randint() and randperm() in PyTorch | *Memos: You can use manual_seed() with randint() and randperm(). *My post explains... | 0 | 2024-07-10T14:29:45 | https://dev.to/hyperkai/randint-and-randperm-in-pytorch-8gm | *Memos:
- You can use [manual_seed()](https://pytorch.org/docs/stable/generated/torch.manual_seed.html) with [randint()](https://pytorch.org/docs/stable/generated/torch.randint.html) and [randperm()](https://pytorch.org/docs/stable/generated/torch.randperm.html). *[My post](https://dev.to/hyperkai/manualseed-initialseed-and-seed-in-pytorch-5gm8) explains `manual_seed()`.
- [My post](https://dev.to/hyperkai/rand-and-randlike-in-pytorch-1p3k) explains [rand()](https://pytorch.org/docs/stable/generated/torch.rand.html) and [rand_like()](https://pytorch.org/docs/stable/generated/torch.rand_like.html).
- [My post](https://dev.to/hyperkai/randn-and-randnlike-in-pytorch-8bb) explains [randn()](https://pytorch.org/docs/stable/generated/torch.randn.html) and [randn_like()](https://pytorch.org/docs/stable/generated/torch.randn_like.html).
- [My post](https://dev.to/hyperkai/normal-in-pytorch-2jb) explains [normal()](https://pytorch.org/docs/stable/generated/torch.normal.html).
[randint()](https://pytorch.org/docs/stable/generated/torch.randint.html) can create the 1D or more D tensor of the zero or more random integers(Default) or floating-point numbers between `low` and `high-1`(`low`<=x<=`high-1`) as shown below:
*Memos:
- `randint()` can be used with [torch](https://pytorch.org/docs/stable/torch.html) but not with a tensor.
- The 1st argument with `torch` is `low`(Optional-Default:`0`-Type:`int`):
*Memos:
- It must be lower than `high`.
- The 0D or more D tensor of one integer works.
- The 2nd argument with `torch` is `high`(Required-Type:`int`):
*Memos:
- It must be greater than `low`.
- The 0D or more D tensor of one integer works.
- The 3rd argument with `torch` is `size`(Required-Type:`tuple` of `int` or `list` of `int`).
- There is `dtype` argument with `torch`(Optional-Type:[dtype](https://pytorch.org/docs/stable/tensor_attributes.html#torch.dtype)):
*Memos:
- If `dtype` is not given, `dtype` is `torch.int64`.
- `int` or `float` can be used.
- `dtype=` must be used.
- [My post](https://dev.to/hyperkai/set-dtype-with-dtype-argument-functions-and-get-it-in-pytorch-13h2) explains `dtype` argument.
- There is `device` argument with `torch`(Optional-Type:`str`, `int` or [device()](https://pytorch.org/docs/stable/tensor_attributes.html#torch.device)):
*Memos:
- `device=` must be used.
- [My post](https://dev.to/hyperkai/set-device-with-device-argument-functions-and-get-it-in-pytorch-1o2p) explains `device` argument.
- There is `requires_grad` argument with `torch`(Optional-Type:`bool`):
*Memos:
- `requires_grad=` must be used.
- [My post](https://dev.to/hyperkai/set-requiresgrad-with-requiresgrad-argument-functions-and-get-it-in-pytorch-39c3) explains `requires_grad` argument.
- There is `out` argument with `torch`(Optional-Type:`tensor`):
*Memos:
- `out=` must be used.
- [My post](https://dev.to/hyperkai/set-out-with-out-argument-functions-pytorch-3ee) explains `out` argument.
```python
import torch
torch.randint(high=10, size=(3,))
# tensor([7, 4, 8])
torch.randint(high=10, size=(3, 2))
# tensor([[8, 9], [6, 5], [5, 2]])
torch.randint(high=10, size=(3, 2, 4))
# tensor([[[1, 5, 9, 0], [4, 6, 7, 2]],
# [[5, 2, 1, 5], [9, 3, 2, 6]],
# [[9, 3, 6, 4], [0, 4, 7, 5]]])
torch.randint(low=10, high=20, size=(3,))
# tensor([17, 12, 10])
torch.randint(low=10, high=20, size=(3, 2))
# tensor([[14, 18], [10, 19], [15, 16]])
torch.randint(low=10, high=20, size=(3, 2, 4))
# tensor([[[16, 14, 11, 19], [19, 15, 18, 13]],
# [[14, 10, 11, 13], [16, 11, 10, 16]],
# [[17, 12, 17, 10], [13, 16, 11, 10]]])
torch.randint(low=-5, high=5, size=(3,))
# tensor([-1, 2, -3])
torch.randint(low=-5, high=5, size=(3, 2))
# tensor([[-5, 4], [ 1, -1], [-4, -3]])
torch.randint(low=-5, high=5, size=(3, 2, 4))
# tensor([[[-2, 0, 1, -5], [4, -5, -3, 1]],
# [[-4, -1, -1, -1], [-3, 2, -4, -1]],
# [[4, -1, -5, -3], [2, -3, -2, 2]]])
torch.randint(low=-5, high=5, size=(3, 2, 4), dtype=torch.float32)
torch.randint(low=torch.tensor(-5),
high=torch.tensor([5]),
size=(3, 2, 4),
dtype=torch.float32)
# tensor([[[-4., 1., -1., -3.], [-3., -5., -4., 1.]],
# [[-5., 3., 3., 1.], [-1., 4., -5., 2.]],
# [[-2., -4., -5., 3.], [4., 1., -3., 3.]]])
torch.randint(high=1, size=(0,))
torch.randint(low=0, high=1, size=(0,))
torch.randint(low=10, high=20, size=(0,))
# tensor([], dtype=torch.int64)
```
[randperm()](https://pytorch.org/docs/stable/generated/torch.randperm.html) can create the 1D tensor of zero or more random integers(Default) or floating-point numbers between 0 and `n-1`(0<=x<=`n-1`) as shown below:
*Memos:
- `randperm()` can be used with `torch` but not with a tensor.
- The 1st argument with `torch` is `n`(Required-Type:`int`):
*Memos:
- It must be greater than or equal to 1.
- The 0D or more D tensor of one integer works.
- There is `dtype` argument with `torch`(Optional-Type:[dtype](https://pytorch.org/docs/stable/tensor_attributes.html#torch.dtype)):
*Memos:
- If `dtype` is not given, `dtype` is `torch.int64`.
- `int` or `float` can be used.
- `dtype=` must be used.
- [My post](https://dev.to/hyperkai/set-dtype-with-dtype-argument-functions-and-get-it-in-pytorch-13h2) explains `dtype` argument.
- There is `device` argument with `torch`(Optional-Type:`str`, `int` or [device()](https://pytorch.org/docs/stable/tensor_attributes.html#torch.device)):
*Memos:
- `device=` must be used.
- [My post](https://dev.to/hyperkai/set-device-with-device-argument-functions-and-get-it-in-pytorch-1o2p) explains `device` argument.
- There is `requires_grad` argument with `torch`(Optional-Type:`bool`):
*Memos:
- `requires_grad=` must be used.
- [My post](https://dev.to/hyperkai/set-requiresgrad-with-requiresgrad-argument-functions-and-get-it-in-pytorch-39c3) explains `requires_grad` argument.
- There is `out` argument with `torch`(Optional-Type:`tensor`):
*Memos:
- `out=` must be used.
- [My post](https://dev.to/hyperkai/set-out-with-out-argument-functions-pytorch-3ee) explains `out` argument.
```python
import torch
torch.randperm(n=0)
# tensor([], dtype=torch.int64)
torch.randperm(n=5)
# tensor([3, 0, 4, 2, 1])
torch.randperm(n=10)
# tensor([8, 6, 9, 2, 1, 3, 5, 0, 7, 4])
torch.randperm(n=10, dtype=torch.float32)
torch.randperm(n=torch.tensor([[10]]), dtype=torch.float32)
# tensor([7., 4., 2., 1., 8., 3., 0., 6., 9., 5.])
``` | hyperkai | |
1,918,631 | normal() in PyTorch | *Memos: [Warning]-normal() is really tricky. You can use manual_seed() with normal(). *My post... | 0 | 2024-07-10T14:30:51 | https://dev.to/hyperkai/normal-in-pytorch-2jb | pytorch, normal, random, function | *Memos:
- [Warning]-[normal()](https://pytorch.org/docs/stable/generated/torch.normal.html) is really tricky.
- You can use [manual_seed()](https://pytorch.org/docs/stable/generated/torch.manual_seed.html) with [normal()](https://pytorch.org/docs/stable/generated/torch.normal.html). *[My post](https://dev.to/hyperkai/manualseed-initialseed-and-seed-in-pytorch-5gm8) explains `manual_seed()`.
- [My post](https://dev.to/hyperkai/rand-and-randlike-in-pytorch-1p3k) explains [rand()](https://pytorch.org/docs/stable/generated/torch.rand.html) and [rand_like()](https://pytorch.org/docs/stable/generated/torch.rand_like.html).
- [My post](https://dev.to/hyperkai/randn-and-randnlike-in-pytorch-8bb) explains [randn()](https://pytorch.org/docs/stable/generated/torch.randn.html) and [randn_like()](https://pytorch.org/docs/stable/generated/torch.randn_like.html).
- [My post](https://dev.to/hyperkai/randint-and-randperm-in-pytorch-8gm) explains [randint()](https://pytorch.org/docs/stable/generated/torch.randint.html) and [randperm()](https://pytorch.org/docs/stable/generated/torch.randperm.html).
[normal()](https://pytorch.org/docs/stable/generated/torch.normal.html) can create the 1D or more D tensor of zero or more random floating-point numbers or complex numbers from normal distribution as shown below:
*Memos:
- `normal()` can be used with [torch](https://pytorch.org/docs/stable/torch.html) but not with a tensor.
- The 1st argument with `torch` is `mean`(Required-Type:`float` or `complex` or `tensor` of `float` or `complex`):
*Memos:
- Setting `mean` without `std` and `size` is `tensor` of `float` or `complex`.
- Setting `mean` and `std` without `size` is `float` or `tensor` of `float` or `complex`.
- Setting `mean`, `std` and `size` is `float` or `tensor` of `float`. *The 0D tensor of `float` also works.
- The 2nd argument with `torch` is `std`(Optional-Type:`float` or `tensor` of `float`):
*Memos:
- It is standard deviation.
- It must be greater than or equal to 0.
- Setting `std` without `size` is `float` or `tensor` of `float`.
- Setting `std` with `size` is `float` or `tensor` of `float`. *The 0D tensor of `float` also works.
- The 3rd argument with `torch` is `size`(Optional-Type:`tuple` of `int` or `list` of `int`):
*Memos:
- It must be used with `std`.
- It must not be negative.
- There is `dtype` argument with `torch`(Optional-Type:[dtype](https://pytorch.org/docs/stable/tensor_attributes.html#torch.dtype)):
*Memos:
- If `dtype` is not given, `dtype` is inferred from `mean` or `std` or `dtype` of [set_default_dtype()](https://pytorch.org/docs/stable/generated/torch.set_default_dtype.html) is used for floating-point numbers.
- Only `float` and `complex` can be used.
- `dtype=` must be used.
- [My post](https://dev.to/hyperkai/set-dtype-with-dtype-argument-functions-and-get-it-in-pytorch-13h2) explains `dtype` argument.
- There is `device` argument with `torch`(Optional-Type:`str`, `int` or [device()](https://pytorch.org/docs/stable/tensor_attributes.html#torch.device)):
*Memos:
- `device=` must be used.
- [My post](https://dev.to/hyperkai/set-device-with-device-argument-functions-and-get-it-in-pytorch-1o2p) explains `device` argument.
- There is `requires_grad` argument with `torch`(Optional-Type:`bool`):
*Memos:
- `requires_grad=` must be used.
- [My post](https://dev.to/hyperkai/set-requiresgrad-with-requiresgrad-argument-functions-and-get-it-in-pytorch-39c3) explains `requires_grad` argument.
- There is `out` argument with `torch`(Optional-Type:`tensor`):
*Memos:
- `out=` must be used.
- [My post](https://dev.to/hyperkai/set-out-with-out-argument-functions-pytorch-3ee) explains `out` argument.
```python
import torch
torch.normal(mean=torch.tensor([1., 2., 3.]))
# tensor([1.2713, 0.7271, 3.5027])
torch.normal(mean=torch.tensor([1.+0.j, 2.+0.j, 3.+0.j]))
# tensor([1.1918-0.9001j, 2.3555+0.2956j, 2.5479-0.4672j])
torch.normal(mean=torch.tensor([1., 2., 3.]),
std=torch.tensor([4., 5., 6.]))
# tensor([2.0851, -4.3646, 6.0162])
torch.normal(mean=torch.tensor([1.+0.j, 2.+0.j, 3.+0.j]),
std=torch.tensor([4., 5., 6.]))
# tensor([1.7673-3.6004j, 3.7773+1.4781j, 0.2872-2.8034j])
torch.normal(mean=torch.tensor([1., 2., 3.]), std=4.)
# tensor([2.0851, -3.0917, 5.0108])
torch.normal(mean=torch.tensor([1.+0.j, 2.+0.j, 3.+0.j]), std=4.)
# tensor([1.7673-3.6004j, 3.4218+1.1825j, 1.1914-1.8689j])
torch.normal(mean=1., std=torch.tensor([4., 5., 6.]))
# tensor([2.0851, -5.3646, 4.0162])
torch.normal(mean=1., std=4., size=(3,))
torch.normal(mean=torch.tensor(1.), std=torch.tensor(4.), size=(3,))
# tensor([2.0851, -4.0917, 3.0108])
torch.normal(mean=1., std=4., size=(3, 2))
torch.normal(mean=torch.tensor(1.), std=torch.tensor(4.), size=(3, 2))
# tensor([[2.0851, -4.0917],
# [3.0108, 2.6723],
# [-1.5577, -1.6431]])
torch.normal(mean=1., std=4., size=(3, 2, 4))
torch.normal(mean=torch.tensor(1.), std=torch.tensor(4.), size=(3, 2, 4))
# tensor([[[-3.7568, 6.5729, 9.4236, -0.4183],
# [2.4840, 5.3827, 9.5657, 1.5267]],
# [[8.0575, -0.5000, -0.3416, 5.3502],
# [-4.3835, 1.6974, 2.6226, -1.9671]],
# [[1.1422, 1.7790, 4.5886, -0.3273],
# [2.8941, -3.3046, 1.1336, 2.8792]]])
``` | hyperkai |
1,918,632 | Digram display of Python's commonly used third-party libraries | Python's commonly used libraries are generally TimeSeries Analysis, Data Visualization, Web Scraping,... | 0 | 2024-07-10T14:34:11 | https://dev.to/fridaymeng/digram-display-of-pythons-commonly-used-third-party-libraries-3k2h | python, diagram, tutorial | Python's commonly used libraries are generally TimeSeries Analysis, Data Visualization, Web Scraping, Machine Learning, Data Manipulation, Natural Language Processing, Database Operations, Statistical Analysis。
[Python Library Online](http://addgraph.com/pythonLibrary) | fridaymeng |
1,918,633 | How Do I Fix QuickBooks Error 557? (Payroll Update Error) | Encountering QuickBooks Error 557 can be frustrating, especially when you are in the middle of... | 0 | 2024-07-10T14:34:15 | https://dev.to/qbtoolshub/how-do-i-fix-quickbooks-error-557-payroll-update-error-159b |
Encountering QuickBooks Error 557 can be frustrating, especially when you are in the middle of important financial tasks. This blog post will guide you through understanding, diagnosing, and resolving this common QuickBooks error to ensure your payroll updates proceed smoothly.
Struggling with QuickBooks Error 557? Don't let it disrupt your business operations any longer. Call our toll-free number at 1-844-712-2521 for immediate assistance from our QuickBooks experts. We're here to help you get back on track!
**What is QuickBooks Error 557?**
[QuickBooks Error 557](https://quickbookstoolshub.org/quickbooks-error-557) is a common error that occurs during payroll updates or when upgrading QuickBooks software. This error disrupts the normal flow of operations, making it essential to address promptly for the seamless functioning of your business's financial processes.
**Causes of QuickBooks Error 557**
This error can arise due to a variety of reasons, including incorrect setup of QuickBooks payroll or issues with your system's configuration.
Incorrect Payroll Setup
One of the primary reasons for QuickBooks Error 557 is an incorrect payroll setup, which can disrupt normal operations. Ensuring that your payroll settings are accurately configured is crucial for avoiding this error.
System Configuration Issues
Problems with your system configuration, such as outdated Windows or QuickBooks versions, can also trigger this error. Keeping your system updated can prevent such issues from arising.
Symptoms of QuickBooks Error 557
Recognizing the symptoms of QuickBooks Error 557 can help in diagnosing and addressing the issue promptly.
Error Message Display
Users typically see an error message that reads, "QuickBooks Error 557: Payroll update did not complete successfully." This message is a clear indication that there is an issue with the payroll update process.
Freezing or Crashing
Frequent freezing or crashing of QuickBooks is another sign that this error might be present. If your QuickBooks software becomes unresponsive, it might be due to Error 557.
How to Fix QuickBooks Error 557
There are several methods to resolve QuickBooks payroll Update Error 557, ensuring that your payroll updates proceed smoothly.
Update QuickBooks Software
The first step is to make sure that your QuickBooks software is updated to the latest version. Regular updates can fix bugs and improve functionality, preventing errors like 557.
Verify and Rebuild Data
Using the Verify and Rebuild Data tool in QuickBooks can help identify and fix data integrity issues. This tool scans your data for errors and helps in repairing them.
Configure Payroll Settings
Ensuring that your payroll settings are correctly configured can prevent this error from occurring. Double-check your payroll setup to ensure it aligns with QuickBooks requirements.
Seek Professional Help
If the above methods do not resolve the issue, seeking help from a QuickBooks professional is recommended. Professional support can provide advanced troubleshooting and personalized assistance.
Preventing QuickBooks Error 557 in the Future
Taking proactive measures can help prevent QuickBooks Payroll Update Error 557 from disrupting your workflow in the future.
Regular Software Updates
Regularly updating your QuickBooks software ensures that you have the latest fixes and improvements. Set your software to update automatically to stay ahead of potential issues.
Proper Payroll Setup
Making sure that your payroll setup is accurate from the start can reduce the chances of encountering this error. Follow QuickBooks guidelines for setting up payroll to avoid common pitfalls.
Regular System Maintenance
Performing regular maintenance on your system, including updates and scans, can help keep QuickBooks running smoothly. Schedule regular check-ups to ensure optimal performance.
Conclusion
By understanding QuickBooks Error 557 and how to address it, you can minimize disruptions to your financial tasks and ensure smooth payroll operations. Staying proactive with updates and maintenance can prevent this error from affecting your business.
Additional Resources
For more information on QuickBooks errors and solutions, refer to the following resources.
QuickBooks Support
Visit the official QuickBooks Support page for comprehensive guides and troubleshooting tips. This resource is invaluable for resolving common issues and keeping your software updated.
Online Forums
Engage with the QuickBooks community through online forums to share experiences and solutions. Forums can provide real-world advice from other users who have faced similar issues.
Professional Services
Consider professional QuickBooks services for personalized assistance and advanced troubleshooting. Professionals can offer tailored solutions to complex problems.
Need help fixing QuickBooks Error 557? Contact our dedicated support team now! Dial 1-844-712-2521 toll-free for personalized support and solutions. Let us help you keep your financial tasks running smoothly!
Frequently Asked Questions [FAQs]
Here are some frequently asked questions regarding QuickBooks Error 557.
What should I do if I keep encountering QuickBooks Error 557?
If you keep encountering this error, it is advisable to check for software updates and review your payroll setup. Ensuring your system and software are up-to-date can often resolve recurring issues.
Can QuickBooks Error 557 affect my data?
While this error primarily affects payroll updates, it's crucial to ensure data integrity through regular backups and using the Verify and Rebuild Data tool. Regular backups can protect your data from unexpected errors and losses.
By following this guide, you can effectively manage and resolve QuickBooks Error 557, ensuring your business operations remain smooth and efficient.
| qbtoolshub | |
1,918,634 | Jenkins Step-by-Step Guide on Crafting a Continuous Delivery and Deployment Pipeline | What is CI/CD? CI/CD stands for Continuous Integration and Continuous Delivery (or Deployment).... | 0 | 2024-07-10T14:36:34 | https://dev.to/oncloud7/jenkins-step-by-step-guide-on-crafting-a-continuous-delivery-and-deployment-pipeline-3d99 | jenkins, awschallenge, devops, cicd | **What is CI/CD?**
CI/CD stands for Continuous Integration and Continuous Delivery (or Deployment). Continuous Integration is the practice of frequently merging code changes into a shared repository. It involves automating the build, unit testing, and code quality checks to detect issues early. Continuous Delivery focuses on automating the deployment process to make software releases ready for production at any time.
**What Is a Build Job?**
A Jenkins build job contains the configuration for automating a specific task or step in the application building process. These tasks include gathering dependencies, compiling, archiving, or transforming code, and testing and deploying code in different environments.
Jenkins supports several types of build jobs, such as freestyle projects, pipelines, multi-configuration projects, folders, multibranch pipelines, and organization folders.
**What is Freestyle Projects ??**
A Freestyle Project in Jenkins allows you to create a job without adhering to a strict pipeline structure. It provides a graphical user interface (GUI) where you can configure various build steps, triggers, post-build actions, and more. This approach is especially useful for projects that don't follow a standard build and deployment process or for teams that prefer a more manual and ad-hoc approach to setting up their automation tasks.
**🔹Task-01**
create a agent for your app. ( which you deployed from docker in earlier task
1.In your Jenkins instance, go to "Manage Jenkins" > "Nodes".
2.Click on "New Node" or "New Agent" to create a new agent.
3.Provide a name for the agent and select "Permanent Agent".
4.Configure the agent settings, such as the number of executors and remote root directory.
5.Optionally, configure labels to associate with this agent and select "Use WebSocket" Save the configuration.
6.the agent is created.
Create a new Jenkins freestyle project for your app.
1.From the Jenkins dashboard, click on "New Item" to create a new project.
2.Enter a project name and select "Freestyle project" Click "OK" to create the project.
In the "Build" section of the project, add a build step to run the "docker build" command to build the image for the container.
1.In the project configuration, navigate to the "Build" section.
2.Click on "Add build step" and select "Execute shell" (or the relevant option for your environment).
3.In the "Execute shell" build step, add the command to build the Docker image for your app. Replace <app_directory> with the actual directory of your app
4.Save the project configuration.
| oncloud7 |
1,918,635 | Understanding Advanced Persistent Threats (APTs) | Understanding Advanced Persistent Threats (APTs) | 0 | 2024-07-10T14:42:54 | https://dev.to/saramazal/understanding-advanced-persistent-threats-apts-214 | apt, cybersecurity, hacking, infosec | ---
title: Understanding Advanced Persistent Threats (APTs)
published: true
description: Understanding Advanced Persistent Threats (APTs)
tags: #apt #cybersecurity #hacking #infosec
# cover_image: https://direct_url_to_image.jpg
# Use a ratio of 100:42 for best results.
# published_at: 2024-07-10 14:37 +0000
---
### Understanding Advanced Persistent Threats (APTs)
Advanced Persistent Threats (APTs) are sophisticated and prolonged cyber attacks often carried out by well-resourced and highly skilled groups. These attacks are characterized by their ability to remain undetected for extended periods while continually extracting sensitive information or causing damage. APTs typically target high-value assets such as government agencies, critical infrastructure, and large corporations.
#### Characteristics of APTs
- **Advanced:** APTs employ complex and often custom-made techniques to bypass traditional security measures.
- **Persistent:** APTs maintain a long-term presence within the target network, continuously monitoring and extracting information.
- **Threat:** APTs are carried out by organized groups, often with significant funding and resources, sometimes linked to nation-states.
### Notable APT Groups
Several APT groups have gained notoriety for their sophisticated and impactful cyber campaigns. Here are some of the most famous and influential ones:
#### 1. [**APT29 (Cozy Bear)**](https://attack.mitre.org/groups/G0016/)
APT29, also known as Cozy Bear, is believed to be linked to Russian intelligence agencies. It is known for targeting government, diplomatic, think tank, healthcare, and energy sectors worldwide.
- **Notable Attacks:**
- **2016 U.S. Presidential Election:** APT29 was implicated in the hacking of the Democratic National Committee (DNC), leading to significant political turmoil.
- **SolarWinds Attack (2020):** APT29 is suspected to be behind the SolarWinds supply chain attack, which compromised numerous U.S. federal agencies and corporations.
#### 2. [**APT28 (Fancy Bear)**](https://attack.mitre.org/groups/G0007/)
APT28, or Fancy Bear, is another group believed to be associated with Russian military intelligence. It primarily targets political, military, security, and media organizations.
- **Notable Attacks:**
- **2016 U.S. Presidential Election:** Alongside APT29, APT28 was involved in the DNC breach and subsequent email leaks.
- **German Bundestag Hack (2015):** APT28 targeted the German parliament, leading to the theft of significant amounts of sensitive information.
#### 3. [**APT41 (Double Dragon)**](https://en.m.wikipedia.org/wiki/Double_Dragon_(hacking_group))
APT41 is a Chinese cyber espionage group known for its dual role in state-sponsored espionage and financially motivated cybercrime.
- **Notable Attacks:**
- **Supply Chain Attacks:** APT41 has compromised software supply chains to infiltrate organizations across multiple sectors, including healthcare, telecom, and finance.
- **COVID-19 Research Theft:** APT41 targeted several organizations involved in COVID-19 research to steal intellectual property.
#### 4. [**Lazarus Group**](https://attack.mitre.org/groups/G0032/)
Lazarus Group is linked to North Korea and is known for its wide range of cyber activities, including espionage, cyber sabotage, and financial theft.
- **Notable Attacks:**
- **Sony Pictures Hack (2014):** Lazarus Group conducted a high-profile attack on Sony Pictures, leaking confidential data and causing extensive damage.
- **WannaCry Ransomware (2017):** This ransomware attack affected over 200,000 computers worldwide, causing significant disruption and financial loss.
### Examples of the Most Malicious APT Attacks
#### 1. [**Stuxnet**](https://en.m.wikipedia.org/wiki/Stuxnet)
- **Target:** Iranian Nuclear Facilities
- **Impact:** Stuxnet is a highly sophisticated computer worm believed to be developed by the U.S. and Israel. It targeted Iran's nuclear enrichment facilities, causing significant physical damage to centrifuges and delaying the country's nuclear program.
#### 2. [**Operation Aurora**](https://en.m.wikipedia.org/wiki/Operation_Aurora)
- **Target:** Major Corporations (Google, Adobe, etc.)
- **Impact:** This attack, attributed to Chinese APTs, targeted intellectual property and trade secrets of multiple high-profile companies, leading to significant data breaches and financial loss.
#### 3. [**NotPetya**](https://en.m.wikipedia.org/wiki/Petya_(malware_family))
- **Target:** Various Organizations Worldwide
- **Impact:** NotPetya masqueraded as ransomware but was actually a destructive wiper malware. Originating from a compromised Ukrainian accounting software, it caused billions of dollars in damage globally, affecting companies like Maersk, Merck, and FedEx.
### Conclusion
Advanced Persistent Threats represent one of the most significant challenges in cybersecurity due to their sophistication, persistence, and potential for widespread damage. Understanding the methods and motivations of notable APT groups, as well as learning from past attacks, is crucial for organizations to enhance their defensive strategies and protect their valuable assets. | saramazal |
1,918,636 | Javascript Array Methods – Easy Examples That Make Learning A Blast | Whether you are learning Javascript for the first time or you are an experienced developer, chances... | 0 | 2024-07-10T15:12:26 | https://noghostsinside.com/javascript-array-methods-easy-examples-that-make-learning-a-blast/ | javascript, webdev, beginners, programming | Whether you are learning Javascript for the first time or you are an experienced developer, chances are you will be working with arrays frequently. This post was created to help you understand (or remind you of) how the most common Javascript array methods work. We recommend bookmarking this post, as it will be helpful more often than you might expect.
In addition to briefly explaining each method and providing relevant examples, we have also included the .length property since it’s also commonly used.
All Javascript array methods described in this post have been organized in alphabetical order to make searching easier. For those who want to learn more, we’ve also included a link to the MDN documentation in the footer of each code snippet for quick access to detailed information about the related method.
For any beginner developers who have just started their journey, seeing `.prototype.` in the name of every method might be confusing. I have to say, in my first steps, it confused me a lot, thinking, “Why not just say `Array.every` instead of `Array.prototype.every`” ? A quick and short explanation to help you move forward without getting stuck is that when we write `Array.prototype.<method_name>` it indicates that the method described exists natively within every array instance (within every array you use).
## Array.prototype.every()
**When to choose this**: When you are checking if **every** element of an array passes a specific condition.
**Returns**: `true` or `false`
```javascript
[🦊, 🐻, 🐼].every(element => element === 🐼);
// false
[🐻, 🐻, 🐻].every(element => element === 🐻);
// true
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every)
**Callback params**
1. `element` – the element checked in each step
2. `index` – the element’s index (its position)
3. `array` – the array itself, to which you have called `.every`
## Array.prototype.filter()
**When to choose this**: The Javascript array filter method is probably one of the most used ones. Use it when you want to create a new array with elements that pass a specific condition.
**Returns**: **A new array**, including the elements that **passed** the condition.
```javascript
[🦊, 🐻, 🐼].filter(element => element !== 🐼);
// [🦊, 🐻]
[🐻, 🐻, 🐻].filter(element => element === 🐼);
// []
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter)
**Callback params**
1. `element` – the element checked in each step
2. `index` – the element’s index (its position)
3. `array` – the array itself, to which you have called `.filter`
**Warning**
When a method returns a new array, it is not 100% independent from its source array. It’s a [shallow](https://developer.mozilla.org/en-US/docs/Glossary/Shallow_copy) copy! Proceed with extra caution on this because you might see some unexpected surprises!
## Array.prototype.find()
**When to choose this**: When trying to find the **first** element in an array that passes a specific condition.
**Returns**: The element that passes the condition or `undefined` if no element is found.
```javascript
[🦊, 🐻, 🐼].find(element => element === 🐼);
// 🐼
[🐼, 🐻, 🐼].find(element => element === 🐼);
// 🐼 (The first one)
[🐻, 🐻, 🐻].find(element => element === 🐼);
// undefined
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find)
**Callback params**
1. `element` – the element checked in each step
2. `index` – the element’s index (its position)
3. `array` – the array itself, to which you have called `.find`
## Array.prototype.flat()
**When to choose this**: When you have complex array structures (arrays in arrays), and you want to flatten everything into one level.
**Returns**: **A new array** containing all elements from different array levels.
```javascript
[🐻, 🐻, 🐻].flat();
// [🐻, 🐻, 🐻]
[🐻, 🐻, 🐼, [🦊, [🐻, 🐻], 🦊]].flat();
// default level is 1
// [🐻, 🐻, 🐼, 🦊, [🐻, 🐻], 🦊]
[🐻, 🐻, 🐼, [🦊, [🐻], 🦊]].flat(Infinity);
// Infinity will flatten all levels
// [🐻, 🐻, 🐼, 🦊, 🐻, 🦊]
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat)
(Remember, the new array is a [shallow](https://developer.mozilla.org/en-US/docs/Glossary/Shallow_copy) copy of the source one).
## Array.prototype.forEach()
**When to choose this**: When you need to iterate through every element of an array and perform a specific action **on each** element.
**Returns**: `undefined`
```javascript
[🐻, 🐻, 🐼].forEach(element => {
// check something about this element
isAnimalCarnivore(element);
});
// undefined
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach)
**Callback params**
1. `element` – the element checked in each step
2. `index` – the element’s index (its position)
3. `array` – the array itself, to which you have called `.forEach`
Since this method always returns `undefined`, if you want your loop to return something, you might want to check the `.map` method.
Warning: This method doesn’t break the iteration unless you throw an Error!
## Array.prototype.includes()
**When to choose this**: When you want to see if a Javascript array contains a specific element.
**Returns**: `true` or `false`
```javascript
[🦊, 🐻, 🐼].includes(🐻);
// true
[🦊, 🐻, 🐼].includes(🐸);
// false
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)
When working with objects, keep in mind that something like this 👇 won’t work:
```javascript
[{ name: 'Bob' }].includes({ name: 'Bob' });
// false
```
What you need is probably `.some`, `.filter`, or maybe `.find`.
## Array.prototype.length
**When to choose this**: When you want to know/check the length of an array.
**Returns**: A number – The array’s length.
```javascript
[🦊, 🐻, 🐼].length;
// 3
[].length;
// 0
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length)
This is a property, not a method. Don’t invoke it.
## Array.prototype.map()
**When to choose this**: When you want to create a new array where each element is transformed by applying a callback function to each element of the original array.
**Returns**: **A new array** containing the transformed elements based on the callback function.
```javascript
[🦊, 🐻, 🐼].map((element, index) => ({
id: index, animalIcon: element
}));
/*
[
{ id: 0, animalIcon: 🦊 },
{ id: 1, animalIcon: 🐻 },
{ id: 2, animalIcon: 🐼 }
]
*/
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map)
**Callback params**
1. `element` – the element checked in each step
2. `index` – the element’s index (its position)
3. `array` – the array itself, to which you have called `.map`
## Array.prototype.pop()
**When to choose this**: When you want to throw away the last item of the array.
**Returns**: The item you threw, or `undefined` if the array was already empty.
```javascript
[🦊, 🐻, 🐼].pop();
// 🐼
[].pop();
// undefined
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/pop)
The opposite method of `.pop` is `.shift`.
## Array.prototype.push()
**When to choose this**: When you want to add an element (or more than one) to the end of your array.
**Returns**: **The new array’s length**. The method **modifies the original array** by adding any passed element(s) to its end.
```javascript
[🦊, 🐻, 🐼].push(🦊);
// returns 4
// [🦊, 🐻, 🐼, 🦊];
[🦊, 🐻, 🐼].push(🦊, 🦊, 🦊);
// returns 6
// [🦊, 🐻, 🐼, 🦊, 🦊, 🦊];
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push)
## Array.prototype.reduce()
**When to choose this**: When you want to condense an array into a single value based on some logic applied by the callback function. E.g., when you want to calculate a sum or an average.
**Returns**: A single value as a result of applying the callback function to each element of the array.
```javascript
[1, 2, 1].reduce((acc, element) => acc + element)
// 4
[1, 2, 1].reduce((acc, element) => acc + element, 10)
// 14 (accumulator - initial value - set to 10)
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)
**Callback params**
1. `accumulator` - What is returned by the callback function. The default value of an accumulator, if not specified otherwise, is 0
2. `element` - the iteration's element
3. `index` - the element's index position
## Array.prototype.reverse()
**When to choose this**: When you want to reverse the order of the array’s elements.
**Returns**: The **original** array reversed.
```javascript
[🦊, 🐻, 🐼].reverse();
// [🐼, 🐻, 🦊];
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse)
## Array.prototype.shift()
**When to choose this**: When you want to throw away the first item of the array.
**Returns**: The item you threw, or `undefined` if the array was already empty.
```javascript
[🦊, 🐻, 🐼].shift();
// 🦊
[].shift();
// undefined
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift)
The opposite method of `.shift` is the `.pop` method.
## Array.prototype.slice()
**When to choose this**: When you want a slice 🍕 of an array.
**Returns**: The slice you asked for in **a new array**.
```javascript
[🦊, 🐻, 🐼, 🐸, 🐯, 🦝].slice();
// returns slice
// [🦊, 🐻, 🐼, 🐸, 🐯, 🦝]
[🦊, 🐻, 🐼, 🐸, 🐯, 🦝].slice(2);
// returns slice
// [🐼, 🐸, 🐯, 🦝] - first 2 animals ignored
[🦊, 🐻, 🐼, 🐸, 🐯, 🦝].slice(1, 3);
// [ ... -> 🐻] - starting position - element 1
// (included)
// [ ... <- 🐸 ...] - ending position element 3
// (not included)
// returns slice
// [🐻, 🐼]
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice)
**Parameters**
- `start`: The starting point from which the slicing begins. The start **is included** in the slice.
- `end`: The position that the slicing stops. The end position **is not included** in the slice.
(Remember, the new array is a [shallow copy](https://developer.mozilla.org/en-US/docs/Glossary/Shallow_copy) of the source one).
## Array.prototype.some()
**When to choose this**: When you are checking if at least one element of an array passes a specific condition.
**Returns**: `true` or `false`
```javascript
[🦊, 🐻, 🐼].some(element => element === 🐼);
// true
[🐻, 🐻, 🐻].some(element => element === 🐼);
// false
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some)
If you want to check if all elements pass the condition, you should check `.every` method.
## Array.prototype.sort()
**When to choose this**: When you want to sort the elements in a specific way.
**Returns**: The **source array** sorted.
```javascript
[3, 2, 1].sort();
// [1, 2, 3]
['A', 'C', 'B'].sort();
// ['A', 'B', 'C']
[
{ id: 13 },
{ id: 42 },
{ id: 10 }
].sort((itemA, itemB) => itemA.id - itemB.id);
// Result [{ id: 10 }, { id: 13 }, { id: 42 }]
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort)
## Array.prototype.splice()
**When to choose this**: When you want to replace some contents of an array or remove them.
**Returns**: **A new array** is created by the removed/replaced elements.
```javascript
[🦊, 🐻, 🐼, 🐸, 🐯, 🦝].splice();
// [🦊, 🐻, 🐼, 🐸, 🐯, 🦝] - source array
// [] - returns empty array
[🦊, 🐻, 🐼, 🐸, 🐯, 🦝].splice(2);
// [🦊, 🐻] - source array
// [🐼, 🐸, 🐯, 🦝] - new array
[🦊, 🐻, 🐼, 🐸, 🐯, 🦝].splice(2, 1);
// [🦊, 🐻, 🐸, 🐯, 🦝] - source array
// [] - returns empty array
[🦊, 🐻, 🐼, 🐸, 🐯, 🐯].splice(2, 0, 🦝, 🦝);
// [🦊, 🐻, 🐸, 🦝, 🦝, 🐯, 🐯] - source array
// [] - new array
/*
New array was not created
since we asked for 0 deletion.
Instead the source array was modified.
*/
```
[MDN Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice)
**Parameters**
- `start`: The starting point from which the removing/replacing begins. The start **is included** in the slice.
- `count`: How many elements to delete. If omitted, it will be set from the starting position till the end of the array.
- `replacement`: New element(s) to be added from the starting position
(Remember, the new array is a [shallow copy](https://developer.mozilla.org/en-US/docs/Glossary/Shallow_copy) of the source one).
## Guidance on using Javascript array methods
You don’t have to memorize every Javascript array method, its syntax, and its exact functionality! It’s more important to know that they exist. Over time, you’ll naturally develop muscle memory for the ones you use frequently. For the less used methods, just keep them in mind and look them up when needed. Consider bookmarking this post for future reference! 🤓
In this post, we tried to explain/demonstrate some of the most common Javascript array methods. Our intention was not to provide comprehensive documentation, so we intentionally omitted more advanced parameters that are applicable to some of the methods described.
If you’re interested in learning about these less frequently used parameters, we recommend visiting the MDN Documentation linked in the footer of each code snippet.
This post [Javascript Array Methods – Easy Examples That Make Learning A Blast
](https://noghostsinside.com/javascript-array-methods-easy-examples-that-make-learning-a-blast/?utm_source=devto&utm_medium=referral&utm_campaign=republished_content&utm_content=post_url
) was originally published on the [No Ghosts Inside](https://noghostsinside.com/?utm_source=devto&utm_medium=referral&utm_campaign=republished_content&utm_content=post_home_url
) tech blog. | noghostsinside |
1,918,637 | Building Batching Notifications Using MongoDB, Django, Celery and Sendgrid | What are Batched Notifications? Batch notifications consolidate multiple individual... | 0 | 2024-07-10T14:44:22 | https://dev.to/nikl/building-batching-notifications-using-mongodb-django-celery-and-sendgrid-4n9f | webdev, javascript, programming, devops | ### What are Batched Notifications?
Batch notifications consolidate multiple individual notifications into a single message, delivered within a designated time frame. This approach differs from traditional systems that send a separate notification for each event, helping to reduce notification noise and enhance user engagement.
For instance, in a document collaboration app, rather than sending an email for every single comment, a batch notification system sends one email containing all comments made within the specified time window.
### Designing a Batched Notification System
| Aspect | Batch on Write | Batch on Read | Our Approach |
|----------------------------|-----------------------------------------------------|-----------------------------------------------------|--------------------------|
| **Method** | Accumulate notifications into batches as events occur, optimizing lookups. | Periodically batch unsent notifications by querying them. | Batch on Write |
| **Performance** | More efficient with better performance and scalability. | Can be less efficient as data volume grows. | More initial effort required but offers better scalability. |
| **Scalability** | Higher scalability due to real-time batching. | Lower scalability, can be affected by data volume. | Higher scalability |
### Database Design with MongoDB
| Collection | Description |
|------------------------------|--------------------------------------------------|
| **notifications** | Tracks individual notifications. |
| **notification_batches** | Tracks batched notifications. |
| **notification_batch_notifications** | Links individual notifications to batches. |
---
You can find the codes and implementation in this:
https://www.suprsend.com/post/building-a-batch-notification-system-with-mongodb-django-celery-and-sendgrid-for-developers
---
Do consider sharing that article on Hackernews, or giving us a star on the Github application.
<a href="https://github.com/SuprSend-NotificationAPI/social-app-react-app-inbox" class="button">
</a>
| nikl |
1,918,638 | Developer diary #12. Figma Dev Mode | Today I have found that Dev Mode of Figma is not free. I know that since some date it will include in... | 0 | 2024-07-10T14:45:13 | https://dev.to/kiolk/developer-diary-12-figma-dev-mode-50a7 | programming, design, android, ui | Today I have found that Dev Mode of Figma is not free. I know that since some date it will include in paid plan, but today I faced with it. I needed just to take space size between two widgets. It was sad.
After short googling of this question, I found a video with simple lifehack that allow you to get all required information by regular view mode of Figma.
I understand, almost all digital companies are striving to maximize the revenue. They do this more active when they product stay popular. I as a user don't expect that free functionality will be changed in the future. Very often, this is key reason why I chose this product before. I fell it is not natural. | kiolk |
1,918,639 | Exploring the Best Bridal Dress Brands in Pakistan | Planning a wedding is an exciting yet challenging task, especially when it comes to selecting the... | 0 | 2024-07-10T14:45:31 | https://dev.to/shahidchuhan939/exploring-the-best-bridal-dress-brands-in-pakistan-4dln | cli, java, career, discuss | Planning a wedding is an exciting yet challenging task, especially when it comes to selecting the perfect bridal dress. In Pakistan, where weddings are grand and elaborate affairs, the bridal dress holds paramount importance. It is not just an outfit; it's a symbol of tradition, culture, and the bride's personal style. Pakistan boasts an array of talented designers and bridal dress brands that cater to diverse tastes and preferences. Here, we explore some of the best bridal dress brands in Pakistan that have been creating waves in the bridal fashion industry.
1. HSY (Hassan Sheheryar Yasin)
HSY, a name synonymous with luxury and elegance, is one of the most renowned bridal dress brands in Pakistan. Established by Hassan Sheheryar Yasin, HSY has been at the forefront of the Pakistani fashion industry for over two decades. The brand is known for its intricate embroidery, rich fabrics, and contemporary designs that seamlessly blend tradition with modernity. Brides who choose HSY can expect to look nothing short of regal on their special day.
2. Elan
Elan, founded by Khadijah Shah, is another leading bridal dress brand in Pakistan. Elan's bridal collections are known for their exquisite detailing, luxurious fabrics, and innovative designs. Each piece is a masterpiece, meticulously crafted to perfection. Elan's bridal dresses often feature elaborate embellishments, intricate embroidery, and unique silhouettes, making them a favorite among brides who wish to make a statement on their wedding day.
3. Maria B
Maria B is a household name in Pakistani fashion, and her bridal collections are nothing short of spectacular. Maria B's bridal dresses are characterized by their traditional aesthetics infused with modern elements. The brand offers a wide range of bridal wear, from heavily embellished lehengas to elegant sarees and chic gowns. Maria B ensures that every bride feels like a princess on her big day.
4. Nomi Ansari
Nomi Ansari's bridal collections are a celebration of color, craftsmanship, and creativity. Known for his vibrant color palettes and intricate embroidery, Nomi Ansari creates bridal dresses that are both traditional and contemporary. Brides who opt for a Nomi Ansari creation can expect a fusion of bold colors, elaborate embellishments, and timeless designs that exude elegance and charm.
5. Sana Safinaz
Sana Safinaz is a name that resonates with sophistication and grace. The brand, established by Sana Hashwani and Safinaz Muneer, is renowned for its luxurious bridal wear that combines traditional craftsmanship with modern aesthetics. Sana Safinaz bridal dresses are known for their intricate embroidery, delicate embellishments, and refined silhouettes. Brides who choose Sana Safinaz can be assured of a timeless and elegant look.
6. Faraz Manan
Faraz Manan is a leading name in the Pakistani bridal dresses industry, known for his opulent and glamorous bridal collections. His designs often feature intricate embroidery, rich fabrics, and contemporary cuts. Faraz Manan's bridal dresses are perfect for brides who want to exude luxury and sophistication on their wedding day. Each piece is a work of art, reflecting the designer's attention to detail and commitment to excellence.
7. Zainab Chottani
Zainab Chottani is a celebrated bridal designer known for her exquisite craftsmanship and innovative designs. Her bridal collections are a blend of traditional and contemporary styles, featuring intricate embroidery, luxurious fabrics, and unique silhouettes. Zainab Chottani's bridal dresses are perfect for brides who want to make a fashion statement while staying true to their cultural roots.
8. Asim Jofa
Asim Jofa is a name that stands out in the Pakistani fashion industry for his luxurious and sophisticated bridal wear. His bridal collections are known for their intricate detailing, rich fabrics, and contemporary designs. Asim Jofa's bridal dresses are perfect for brides who want to look regal and elegant on their wedding day. Each piece is a testament to the designer's craftsmanship and attention to detail.
9. Bunto Kazmi
Bunto Kazmi is a legendary name in the Pakistani bridal fashion industry, known for her timeless and classic bridal collections. Her designs are a perfect blend of traditional craftsmanship and contemporary aesthetics. Bunto Kazmi's bridal dresses are characterized by their intricate embroidery, luxurious fabrics, and elegant silhouettes. Brides who choose Bunto Kazmi can be assured of a timeless and graceful look.
10. Deepak Perwani
Deepak Perwani is a renowned bridal designer known for his luxurious and opulent bridal collections. His designs often feature intricate embroidery, rich fabrics, and contemporary cuts. Deepak Perwani's bridal dresses are perfect for brides who want to exude luxury and sophistication on their wedding day. Each piece is a work of art, reflecting the designer's attention to detail and commitment to excellence.
Why Choose a Designer Bridal Dress?
Choosing a designer bridal dress has numerous advantages. Firstly, designer dresses are crafted with the utmost care and precision, ensuring that every detail is perfect. The quality of the fabrics and embellishments used in designer dresses is unparalleled, making them worth the investment. Moreover, designer bridal dresses are often customizable, allowing brides to have a dress that is tailored to their specific preferences and measurements.
Another significant advantage of choosing a designer bridal dress is the unique and innovative designs that set them apart from mass-produced dresses. Designers bring their creative vision to life, creating dresses that are not only beautiful but also reflect the latest fashion trends. Brides who choose designer dresses can be assured of a one-of-a-kind look that will make them stand out on their special day.
Tips for Choosing the Perfect Bridal Dress
Start Early: Begin your search for the perfect bridal dress at least six to eight months before your wedding day. This allows ample time for fittings, alterations, and any customizations.
Set a Budget: Determine your budget for the bridal dress and stick to it. Designer dresses can be expensive, so it's essential to have a clear idea of how much you are willing to spend.
Know Your Style: Have a clear idea of the style and silhouette that you prefer. Consider factors such as your body type, personal style, and the theme of your wedding.
Do Your Research: Research different bridal dress brands and designers to find the ones that align with your style and preferences. Look at their collections online and read reviews from other brides.
Book Appointments: Schedule appointments with bridal boutiques and designers to try on different dresses. Take your time and don't rush the process.
Bring Inspiration: Bring photos of dresses you like to your appointments. This will help the designer or stylist understand your vision and guide you towards the right dress.
Consider Comfort: While the dress's appearance is crucial, comfort should not be overlooked. Choose a dress that you can move around in comfortably, as you will be wearing it for several hours.
Trust Your Instincts: Ultimately, choose a dress that makes you feel confident and beautiful. Trust your instincts and go with the dress that feels right for you.
Conclusion
Selecting the perfect bridal dress for barat is one of the most important decisions a bride will make. With so many talented designers and bridal dress brands in Pakistan, brides have a wealth of options to choose from. Whether you prefer traditional elegance or contemporary glamour, there is a designer out there who can bring your vision to life. By choosing a designer bridal dress, you can ensure that you look and feel your best on your special day, creating memories that will last a lifetime.
| shahidchuhan939 |
1,918,640 | Aim Trainer | Check out this Pen I made! | 0 | 2024-07-10T14:45:59 | https://dev.to/jacobgmartinez/aim-trainer-2nhf | codepen | Check out this Pen I made!
{% codepen https://codepen.io/JacobGMartinez/pen/mdgLONx %} | jacobgmartinez |
1,918,642 | 🤖 Beginner's Guide to Programming: Should You Use AI? | As a seasoned full-stack developer with 8 years of experience, I've witnessed firsthand the evolution... | 0 | 2024-07-10T14:48:20 | https://blog.da4ndo.com/beginners-guide-to-programming-should-you-use-ai | beginners, learning, programming, ai | As a seasoned full-stack developer with 8 years of experience, I've witnessed firsthand the evolution of programming and the rise of AI in our field. In this blog post, I'll share my insights on how to begin your programming journey and explore the role of AI in modern software development.
## 🌟 Introduction
In today's digital age, programming has become an essential skill across various industries. The ability to code opens up a world of opportunities, from building innovative applications to solving complex problems. With the recent advancements in artificial intelligence, aspiring programmers now face an interesting dilemma: should they rely on AI tools to accelerate their learning, or stick to traditional methods?
## 🤔 Understanding Programming
### What is Programming?
Programming, at its core, is the process of giving instructions to a computer to perform specific tasks. It's like learning a new language - one that allows you to communicate with machines.
### Different Programming Languages
Just as there are numerous human languages, there are many programming languages, each with its own syntax and use cases. Some popular ones include:
- Python
- TypeScript
- Rust
- C++
- Ruby
### Common Misconceptions
Many beginners think programming is all about complex mathematics or that you need to be a genius to code. In my experience, these are myths. Programming is more about logical thinking and problem-solving than advanced math.
## 💼 Why Learn Programming?
1. **Career Opportunities**: The tech industry is booming, with a high demand for skilled programmers across various sectors.
2. **Problem-Solving Skills**: Programming enhances your ability to break down complex problems into manageable parts.
3. **Flexibility and Creativity**: Coding allows you to bring your ideas to life and create solutions tailored to specific needs.
## 🚀 Choosing Your First Programming Language
Selecting your first programming language can be overwhelming. Here are some factors to consider:
- Your goals (web development, data science, mobile apps, etc.)
- Job market demand
- Learning curve
For beginners, I often recommend:
1. **Python**: Known for its readability and versatility
2. **JavaScript**: Essential for web development
3. **Ruby**: Great for beginners due to its intuitive syntax
It's crucial to understand that **your programming journey is continuous**.
> 💡 **Remember**: Your first language is just the beginning. Your skillset will grow with your experience.
## 🛠️ Setting Up Your Development Environment
To start coding, you'll need:
1. A computer (any modern PC or Mac will do)
2. A text editor or Integrated Development Environment (IDE)
3. The necessary software for your chosen programming language
In my experience, Cursor is my favorite IDE, followed by Visual Studio Code. I started with PyCharm, but Cursor is now my go-to. These modern IDEs offer AI-assisted code completion, intelligent debugging, and customizable interfaces that boost productivity and code quality.
> 💡 **Tip**: First take some time to customize your customize your IDE's color scheme, shortcuts, and extensions. This enhances your coding experience and efficiency.
> 🚀 **Bonus**: I offer a VSCode (Cursor IDE compatible) profile with optimized settings, sleek designs, and useful tools. Download it [here](https://cdn.da4ndo.com/Da4ndo-latest.code-profile) to jumpstart your coding environment!
## 🧠 Basic Concepts in Programming
Every programmer should understand these fundamental concepts:
1․ **Syntax and Semantics**: The rules of writing code in a specific language.
> 🎥 Video: [Understanding Syntax and Semantics in Programming](https://www.youtube.com/watch?v=YFB0lE7nXZE)
2․ **Variables and Data Types**: How to store and manipulate different kinds of information.
> 🎥 Video: [Variables & Data Types in Programming](https://www.youtube.com/watch?v=LKFrQXaoSMQ)
3․ **Control Structures**: Using loops and conditionals to control the flow of your program.
> 🎥 Video: [Control Structures in Programming](https://www.youtube.com/watch?v=_yb0DwZnnhY)
## 👨💻 Getting Started with Coding
1. Write your first "Hello, World!" program
2. Explore online resources like freeCodeCamp or Codecademy
3. Start small projects to apply what you've learned
## 🤖 The Role of AI in Programming
AI is revolutionizing the way we code. Tools like GitHub Copilot and ChatGPT can:
- Suggest code completions
- Help debug errors
- Generate boilerplate code
## 👍 Benefits of Using AI in Programming
1. **Increased Efficiency**: AI can speed up coding by automating repetitive tasks
2. **Error Detection**: AI tools can spot potential bugs early in the development process
3. **Learning Aid**: AI can explain complex concepts and provide coding examples
## 👎 Drawbacks of Using AI in Programming
1. **Over-reliance**: Beginners might become too dependent on AI suggestions
2. **Lack of Deep Understanding**: AI might provide solutions without explaining the underlying principles
3. **Potential for Incorrect Code**: AI-generated code isn't always perfect and may introduce errors
## 📚 Learning to Code Without AI
Traditional learning methods still have their place:
1. Reading programming books and documentation
2. Solving coding challenges manually
3. Collaborating with other developers on projects
These methods help build a strong foundation and develop problem-solving skills.
## 🔄 Blending AI and Traditional Learning
In my opinion, the best approach is to combine AI tools with traditional learning methods:
1. Use AI for inspiration and to learn new concepts
2. Practice coding manually to reinforce your understanding
3. Verify and understand AI-generated code before using it
> 💡 **Personal Tip**: When using AI tools, try to predict what the AI will suggest before you see its output. This exercise will help you understand patterns in coding and improve your problem-solving skills.
## 🗂️ Resources for Learning Programming
Here are some resources I recommend:
1. Online platforms: [Codecademy](https://www.codecademy.com/), [W3Schools](https://www.w3schools.com/)
2. Coding challenge websites: [LeetCode](https://leetcode.com/), [HackerRank](https://www.hackerrank.com/)
3. Community forums: [Stack Overflow](https://stackoverflow.com/), [Reddit's r/learnprogramming](https://www.reddit.com/r/learnprogramming/)
## 💼 Building a Portfolio
As you progress, start building a portfolio to showcase your skills:
1. Create a GitHub profile to host your projects
2. Contribute to open-source projects
3. Build personal projects that solve real-world problems
## 🎓 Conclusion
Starting your programming journey can be both exciting and challenging. While AI tools can be incredibly helpful, it's crucial to develop a strong foundation through traditional learning methods. By finding the right balance between AI assistance and manual coding, you can become a skilled and adaptable programmer ready for the ever-evolving tech landscape.
Remember, the key to success in programming is consistent practice and a willingness to learn. Whether you choose to use AI or not, the most important thing is to start coding and never stop exploring.
---
**Key Takeaways:**
- 🧠 Focus on understanding core programming concepts
- 🤖 Use AI as a tool, not a crutch
- 🔄 Blend traditional learning with AI-assisted coding
- 🚀 Never stop learning and exploring new technologies
---
## 🚀 Happy coding!
Feel free to leave your comments or questions below. If you found this project helpful, please share it with your peers and follow me for more web development tutorials. Happy coding!
## Follow and Subscribe:
- Website: [da4ndo.com](https://da4ndo.com)
- Email: [contact@da4ndo.com](mailto:contact@da4ndo.com)
| da4ndo |
1,918,643 | CaaS simplified: Why use headless CMS as content as a service | Content as a Service (CaaS) and headless CMS share a common concept: decoupling content creation and... | 0 | 2024-07-10T14:48:53 | https://dev.to/momciloo/caas-simplified-why-use-headless-cms-as-content-as-a-service-32pm | [Content as a Service (CaaS)](https://thebcms.com/blog/content-as-a-service-caas) and [headless CMS](https://thebcms.com/blog/headless-cms-101) share a common concept: decoupling content creation and management from the presentation layer. This separation allows businesses to manage and deliver content flexibly and efficiently across multiple platforms. While CaaS focuses on delivering content over the cloud, Headless CMS emphasizes creating and managing content through an API-first approach. Together, they complement each other, providing a solution for companies looking to streamline their [content operations](https://thebcms.com/blog/improve-content-operations-workflow).
## Understanding a CaaS CMS
CaaS is a cloud service model that enables businesses to deliver content flexibly over the internet. It focuses on making managing, storing, and sharing content easier. With CaaS, companies can access content faster because data is stored in the cloud. This eliminates the need for additional hardware or software purchases, allowing companies to scale their storage capacity, bandwidth, and speed on demand.
### Integrating CMS and CaaS
CMS and CaaS integration is crucial because it combines the strengths of both systems, resulting in a more flexible content management solution. A CMS provides a structured environment for content creation, editing, and organization. By integrating with CaaS, it allows seamless delivery across multiple channels and devices through the cloud. This integration ensures that content is always up-to-date, accessible, and consistent. The
The complementarity of CMS and CaaS allows organizations to leverage the best of both worlds, ensuring efficient content management and delivery.
## Key Features of a CaaS CMS
### Flexible and scalable architecture:
- **API-Based**: An API-first approach enables developers to quickly develop applications tailored to their specific needs without worrying about the underlying infrastructure.
- **Integration**: APIs allow seamless connections with other systems, automating processes and streamlining workflows.
### Content updates and changes
- **Webhooks**: Automatically trigger events when data changes, ensuring content is up-to-date across all platforms.
- **Real-time notifications**: Keep teams informed of changes, ensuring accuracy and timeliness.
### Centralized content management
[Content hub](https://thebcms.com/blog/content-hub-guide) approach: Ensure teams can collaborate effectively, with all content stored in one place for easy access.
**Global management**: Simplify content distribution across regions, languages, and time zones.
### Flexible content modeling
**Custom schemas and data models**: Provide greater control over organizing and managing digital assets, tailoring content delivery to specific requirements.
Learn more: [**A guide to Content Modeling basics**](https://thebcms.com/blog/content-modeling-basics)
### Omnichannel delivery
**Content consistency**: Provide personalized content across multiple platforms, enhancing customer engagement and loyalty.
### Security
**Data privacy and regulations**: Ensure data protection and compliance with regulations like GDPR and CCPA.
## BCMS Cloud: Leading the CaaS as a service provider
BCMS Cloud is an excellent example of how CaaS can be used effectively. Here’s how its features align with and enhance the CaaS model:
### BCMS Dependencies
Using [BCMS dependencies](https://docs.thebcms.com/cloud/dependencies), you can specify which additional NPM packages your project requires.
Add, edit, and delete dependencies to tailor the CMS to specific project needs, ensuring flexibility and adaptability.
### BCMS Functions
BCMS functions are JavaScript Functions via HTTP Requests, this feature allows you to create simple or complex functions to handle specific tasks, enhancing functionality and automation.
For example, a company can create a function to automatically update product prices across all their e-commerce platforms when a change is made in their CMS. This function could be triggered by an HTTP request that checks for price updates and applies them universally, ensuring consistency and accuracy across all sales channels.
Another great thing, this process is extremely fast, when you add a function, CMS will rebuild with a new configuration in a few seconds.
Learn more: [BCMS Cloud Functions](https://docs.thebcms.com/cloud/functions)
### BCMS Events
[BCMS events](https://docs.thebcms.com/cloud/events) allow you to run some custom code, enabling dynamic content management.
For instance, when a new blog post is published, a BCMS event could trigger a function to share the post on social media platforms automatically, increasing reach and engagement without manual intervention.
### BCMS Jobs
[BCMS Jobs](https://docs.thebcms.com/cloud/jobs) are pure examples of CaaS cloud features. BCMS Jobs are used for scheduled tasks. It is about automating routine processes and ensuring timely updates by running JavaScript functions at specified intervals.
An example would be a scheduled job that generates and emails a weekly report of website analytics to the marketing team, ensuring they have up-to-date information to inform their strategies.
### BCMS Plugins
[BCMS Plugins](https://docs.thebcms.com/cloud/plugins) fulfill CaaS standards allowing custom integrations to extend CMS capabilities for unique business needs.
For example, an organization could develop a plugin to integrate their CMS with a third-party CRM, allowing seamless synchronization of customer data and improved marketing automation, or a job board allowing synchronization of applicants.
Learn more: [How to use Headless CMS as your job board CMS](https://thebcms.com/blog/headless-cms-as-job-board-cms)
### BCMS Environment Variables
Use [BCMS Environment variables](https://docs.thebcms.com/cloud/env-variables) for sharing data, streamlining configurations, and enhancing security.
For instance, environment variables could store API keys and database connection strings, ensuring these sensitive details are managed securely and accessed consistently across different parts of the application.
## BCMS Cloud: Content management platform for CaaS
As a CaaS solution, BCMS Cloud offers a comprehensive set of features. Businesses can streamline content management processes, ensure real-time accuracy, and deliver personalized, omnichannel content through its flexible, headless CMS architecture. Moreover, BCMS's integration capabilities and strong security measures make it a leading selection for enterprise users who want to take advantage of CaaS. As a result, CaaS and BCMS are transforming cloud computing and the way businesses manage and deliver content, ensuring they stay ahead in the digital race by delivering timely, relevant, and engaging content. | momciloo | |
1,918,644 | 🏆 Best guide to SEO for devs | SEO, or Search Engine Optimization, is a set of techniques and practices you can adopt as a strategy... | 0 | 2024-07-10T14:50:47 | https://dev.to/daniellimae/best-guide-to-seo-for-devs-6ma | webdev, frontend, seo, tutorial | SEO, or Search Engine Optimization, is a set of techniques and practices you can adopt as a strategy to enhance the way users find you and your company/product online.
In other words, it's a way to stake your claim and ensure that when someone searches for a problem or your name specifically, you appear as the primary solution for them.
Throughout this article, I will provide some examples, but it is important that you DO NOT COPY AND PASTE THEM without first changing what is written and improving it for your context.
But I need to leave a very important message.
If you entered this article thinking there is a magic pill that you will put on your site and everything will be resolved overnight, you can forget about it.
There is no magic pill, my friend. SEO is like going to the gym, a way to build your name and a set of good practices and tools that, over time, will help you have better contact with those whose problems your company solves.
/i.s3.glbimg.com/v1/AUTH_fde5cd494fb04473a83fa5fd57ad4542/internal_photos/bs/2023/e/X/iydKueQVa6BBzUrGks2Q/matrix-dialogo-destaque-22072020.jpg)
If in the gym you need to eat well and exercise every day, SEO works the same way. You need to constantly evolve and adapt to changes.
Because it only takes a move from a company like Google and you lose your throne as the top spot.
I mean, there is a magic pill; the anabolic steroids in this case would be paid traffic, but that's not our focus here. Everything we use will be done 100% naturally and organically 🌱.
So, stay tuned and stay natty, kids.
---
It all started when I had to do this myself for a platform I own called [ Alertpix ](https://alertpix.live), focused on streamers and solutions for live streamers.
We felt at first that our search results were very poor. People searched for our name and only found Twitter or articles from sites talking about us in some way. But our actual site, which was good, nothing.
So, I turned to my partner Chris and committed to learning as much as possible about how to solve this problem and appear more when people search for the problems we can solve.
---
Well, after extensive research, I made a list of several things we could improve; this was the result:
- Optimize Lighthouse
- Better hierarchy (h1, h2, h3)
- Alt tags on images
- Metatags (meta description)
- O.G (Open Graph)
- json-ld
- Blog with long tail content
- pSEO + long tail volume
- Sufficient amount of keywords per page
- robots.txt
- Sitemap
- Google Keyword Planner, SEMrush, and Ahrefs (keywords)
- Canonical tag
I will address each one and give a practical example of how you can improve your site as well.
I will be using Next.js here because it is a framework that already comes with many SEO-oriented features, but you can use and implement it in the framework of your choice.
### Optimize Lighthouse
Lighthouse is a tool that we use as a Google extension to measure how optimized our application is for the end user.
It provides several useful metrics to keep an eye on, such as accessibility, performance, best practices, among others. But here, we will focus on SEO.
The idea is always to improve according to what the tool tells you, and even if it's not 100% perfect, it's still very worthwhile to stick to what the tool delivers and make the improvements it proposes.
Oh, and speaking of accessibility, here is another item on our list.
Alt + Hierarchy / HTML Semantics
After all, can the accessibility of a site interfere with its SEO?
What Google and other search engines can consider is whether your images have well-defined alt tags, if your HTML semantics are clear, and if your tags are well hierarchized (i.e., using h1, h2, h3, and other tags correctly).
So, from that perspective, yes. Characteristics of a well-accessible site are healthy habits for good SEO.
Avoid misleading titles or clickbait.
Do not use a list of keywords as a title or a generic alt for everything.
### Metatags
Meta tags are HTML elements that provide information about the web page to browsers and search engines. These information are not directly displayed to page visitors, but are used for various purposes, such as search engine optimization (SEO), social media sharing, and mobile device display configuration. Some common types of meta tags include:
- Meta Description: Provides a short summary of the page. This text often appears in search results, helping to attract clicks.
```html
<meta name="description" content="A brief and informative description of the page.">
```
Meta Keywords: Lists relevant keywords for the page. Although its importance for SEO has diminished, it is still occasionally used.
```html
<meta name="keywords" content="keyword1, keyword2, keyword3">
```
Meta Charset: Defines the character set used on the page, helping to ensure text display.
```html
<meta charset="UTF-8">
```
Meta Viewport: Configures the page display on mobile devices, allowing for a better user experience across different screen sizes.
```html
<meta name="viewport" content="width=device-width, initial-scale=1.0">
```
Meta Robots: Indicates to search engines how to index or not index the page. It can be used to allow or block the page from being indexed.
```html
<meta name="robots" content="index, follow">
```
Meta Author: Specifies the author of the page or content.
```html
<meta name="author" content="Author Name">
```
Meta Open Graph: Used for integration with social networks like Facebook, improving the display when the page is shared.
```html
<meta property="og:title" content="Page Title">
<meta property="og:description" content="Page Description">
<meta property="og:image" content="Image URL">
<meta property="og:url" content="Page URL">
```
These tags are placed within the <head> section of the HTML document.
Each meta tag has a specific purpose and can be used according to the needs of the page developer.
All of this matters greatly for search tools like Google to know and make your content available.
### O.G Open Graph
Open Graph (OG) is a protocol developed by Facebook to integrate any web page with the social network, allowing page content to be shared in a richer and more attractive way. When a web page contains Open Graph meta tags, shared links on social networks can display titles, descriptions, images, and other details in an optimized manner. This improves the appearance and functionality of links, encouraging more interactions and clicks.
Here are some of the most common Open Graph meta tags and their uses:
Defines the page title that will be displayed when the content is shared.
#### Defines the page title that will be displayed when the content is shared.
```html
<meta property="og:title" content="Título da Página">
```
#### Provides a short and attractive description of the page.
```html
<meta property="og:description" content="Page description.">
```
#### Specifies the URL of a representative image of the page. This image will be displayed as a thumbnail when the page is shared.
```html
<meta property="og:image" content="URL da Imagem">
```
#### Defines the canonical URL of the page, ensuring that the correct URL is associated with the content.
```html
<meta property="og:url" content="URL da Página">
```
#### Indicates the type of content on the page, such as "website", "article", "video", etc.
```html
<meta property="og:type" content="website">
```
#### Name of the site where the page is hosted.
```html
<meta property="og:site_name" content="Nome do Site">
```
#### Benefits of Using Open Graph
- Visual Attraction: Improves the appearance of shared links, displaying images and additional information.
- Increased Clicks: Optimized titles and descriptions can increase the click-through rate (CTR) on links.
- Content Control: Allows site owners to control how their content is displayed on social networks.
- Consistency: Ensures that shared links have a consistent appearance, regardless of where they are shared.
Implementing Open Graph meta tags is a recommended practice for any site that wants to increase its visibility and attractiveness on social media platforms.
You can check if your site is okay and how it appears on different platforms using tools like this: https://opengraph.dev/panel?url=https://alertpix.live
Thus, every time you share your site link, you make it more attractive and less sketchy. This gives a professional touch to your site.
### json-ld
JSON-LD (JavaScript Object Notation for Linked Data) is a JSON-based format used to structure data in a way that can be easily understood by machines. It is commonly used to add metadata to web pages so that search engines and other applications can process and understand this data more efficiently.
JSON-LD is often used to implement structured data schemas (such as schema.org), allowing information about products, events, organizations, people, recipes, and much more to be included on a web page. These structured data can significantly improve SEO and increase the visibility of content in search results, displaying rich snippets.
In other words, another tool for you to communicate directly with servers and search engines. Basically, it's a way of telling Google, "Hi, this is me, I do this, and I solve this..."
An example of how we use this at AlertPix is to create a kind of FAQ with questions and answers that are commonly searched by our audience.
Like this:
But you might be wondering, what were these questions and where did I get them from?
And here I'll show you a tip that I could easily charge for:
- You don't decide this.
- It's a mistake to think you know more about your business than Google.
Go and ask Google, but in a different way.
[Let me introduce you to Keyword Planner + Google ADS](https://ads.google.com/aw/keywordplanner/home)
There are several smart ways to discover which words are ideal for you to use on your site, but I'll tell you now, it's not from your own mind. Do some research, refine, and get the pure juice of the keywords.
This is a practice that takes some time but pays off a lot.
It's also worth researching your competitors' websites and seeing how people find them. Copy what works :)
### Long Tail
The concept of "long tail" is about selling a huge variety of unique items in small quantities, rather than focusing on a few popular items in large quantities. In SEO and content marketing, this means using more specific and less competitive keywords that have fewer searches but attract people with clear buying intent and less competition.
So, instead of using "sneakers" to sell running shoes, you can use "Women's running shoes up to $100," for example.
It's all about niching down and being extremely specific. You can incorporate this into your site using blog posts, making YouTube videos and linking them to your site, and in other ways too.
Again, it's not you who defines these ideal words. Use tools like Google Keyword Planner, Ahrefs, SEMrush, and Ubersuggest to identify long-tail keyword opportunities.
And when using them, make sure to include them in titles, subtitles, and the tags I've already shown you in this article.
The robots.txt file is a file that tells search engines what they can and cannot access on your site. It resides in the root of the domain and has a simple structure:
Basic Structure
```
User-agent: *
Disallow: /admin/
Disallow: /private/
Allow: /public/
Sitemap: https://www.exemplo.com/sitemap.xml
```
#### Key Elements
- User-agent: Specifies which robots the rule applies to. * applies to all.
- Disallow: Blocks directories or files.
- Allow: Allows specific directories or files.
Benefits
- Indexing Control: Decides what search engines see.
- Security: Protects sensitive areas.
- Optimization: Directs robots to important parts of the site.
Remember: Anyone can view your robots.txt, and not all robots follow the rules.
### Sitemaps
A sitemap is a file that lists all the pages of your site to help search engines find, crawl, and index your content more efficiently. It can be in XML or HTML format.
#### Types of Sitemaps
XML Sitemap: Made for search engines. Contains URLs and information like last update, change frequency, and relative importance of pages.
HTML Sitemap: Made for users. Provides an overview of the site's content, making navigation easier.
Basic Structure of an XML Sitemap
Here's a basic example of an XML sitemap:
```xml
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<url>
<loc>https://www.example.com/</loc>
<lastmod>2024-07-08</lastmod>
<changefreq>monthly</changefreq>
<priority>1.0</priority>
</url>
<url>
<loc>https://www.example.com/page1</loc>
<lastmod>2024-07-08</lastmod>
<changefreq>weekly</changefreq>
<priority>0.8</priority>
</url>
<!-- Mais URLs -->
</urlset>
```
Key Elements of an XML Sitemap
`<loc>`: URL of the page.
`<lastmod>`: Date of last modification.
`<changefreq>`: Expected change frequency (daily, weekly, monthly, etc.).
`<priority>`: Relative importance of the page (0.0 to 1.0).
Benefits of a Sitemap
- Better Crawling: Helps search engines find all pages, even deep ones.
- Quick Indexing: New or updated pages are indexed faster.
Organization: Keeps the site well-organized and improves user navigation (for HTML sitemap).
#### How to Use:
Create the Sitemap: Use tools like Yoast SEO (for WordPress), Screaming Frog, or online sitemap generators.
Submit to Search Engines: Submit the sitemap through Google Search Console and Bing Webmaster Tools.
Example of Inclusion in robots.txt
```plaintext
Sitemap: https://www.exemplo.com/sitemap.xml
```
A sitemap is essential to ensure that search engines find and index all the important content on your site, helping to improve SEO and user experience.
### Bonus - Use Next.js
- Next.js is a powerful framework that brings us some advantages in improving SEO.
- But I need to be honest, it's not the only one. There are others like Astro and Nuxt that also do this very well and make your life easier.
- SSR, SSG, Image optimization, among other advantages make Next.js a great tool to assist you on this journey.
---
Well guys, that's it.
With these practices, you'll be on the right track to increase qualified traffic and the success of your blog.
Remember that SEO changes all the time, so always seek the best and most updated strategy for you.
If you like this type of content and plan to launch your own SaaS someday, come with me and follow me. I post daily content on my Twitter and weekly on my YouTube channel.
This article will also be available in video format very soon on my YouTube channel:
https://youtube.com/@daniellimae
https://x.com/daniellimae
| daniellimae |
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1,918,646 | Testing AWS Database Migrations & Accelerating Development with Cloud Pods | Details Join our July Community Meetup to dive deep into innovative strategies for enhancing cloud... | 0 | 2024-07-10T14:54:36 | https://dev.to/localstack/testing-aws-database-migrations-accelerating-development-with-cloud-pods-4ngb | localstack, aws, dms, cloudpods |
**Details**
Join our July Community Meetup to dive deep into innovative strategies for enhancing cloud development and testing using LocalStack. This session will feature two engaging talks: one on deploying and testing data migration pipelines using DMS and LocalStack, and another on streamlining your cloud development with LocalStack Cloud Pods. Discover practical techniques to improve your workflow and collaboration, all from the comfort of your local environment.
**Deploy and Test Data Migration Pipeline with DMS and LocalStack by [Mathieu Cloutier](https://www.linkedin.com/in/mathcloutier/)**
DMS allows us to migrate our data by setting up Replication Tasks that will execute the migration from a Source to a Target. In this talk, Mathieu will explore how to use LocalStack to migrate from a MariaDB database to an AWS Kinesis Stream. He will go over the differences between CDC and full load, and as a bonus you will see how easy it is to migrate from an external database to your Kinesis Stream — tested all on your local machine!
**About Speaker**
Mathieu Cloutier is a Software Engineer at LocalStack. In his past experience, he has worked as a Product Engineer and Full-stack Developer with expertise in scaling startups, implementing Infrastructure-as-Code stacks, and leading teams to develop scalable solutions.
**Accelerate your cloud development with Cloud Pods and LocalStack by [Bart Szydlowski](https://www.linkedin.com/in/bartszy/)**
Cloud pods are persistent state snapshots of your LocalStack instance that can easily be stored, versioned, shared, and restored. In this talk, Bart will explore how you can use Cloud Pods to accelerate your cloud development & testing. He will go over how you can get started with Cloud Pods, integrate them into your testing pipelines, and make it easy for your team members to be onboarded to your cloud infrastructure — running all on your local machine!
**About Speaker**
Bart is a Technical Account Manager at LocalStack, driving customer success through seamless implementation of their innovative cloud development platform. He is a Technology Leader with 10+ years of experience in Enterprise Environments and Cloud Computing.
**Participation**
This event will be hosted on YouTube Live. Once registered, you’ll receive a link and calendar invite with YouTube Live details. You’ll be able to view the live stream, participate by chat, or join Q&A. You will be able to access the event recording on our [YouTube channel](https://www.youtube.com/@localstack).
Social & Community
[LinkedIn](https://www.linkedin.com/company/localstack-cloud/)
[Twitter](https://twitter.com/localstack)
[Blog](https://localstack.cloud/blog)
[Discuss](https://discuss.localstack.cloud/)
[GitHub](https://github.com/localstack)
| bartszy |
1,918,647 | Trouble connecting to VPN? Solutions here | Why has VPN stopped connecting on your computer, phone, or tablet? How to fix connection dropouts... | 0 | 2024-07-10T14:55:07 | https://dev.to/zama_vpn/trouble-connecting-to-vpn-solutions-here-e0a | vpn |
Why has VPN stopped connecting on your computer, phone, or tablet? How to fix connection dropouts and other issues.
Why can’t you connect to VPN and how to resolve connection issues
According to statistics, Russia has taken the second place in the world in terms of VPN downloads.
VPN (Virtual Private Network) is a technology that allows creating a secure connection between two or more devices through a public network such as the internet. VPN encrypts data transmitted between devices, ensuring confidentiality and protection from unauthorized access. VPN also allows bypassing geographical restrictions and gaining access to blocked websites and services.
More and more people use the internet for work, communication, and entertainment, while the issue of security and privacy becomes increasingly relevant. However, sometimes there are problems with connecting to VPN, which can be caused by various reasons.
Why might a VPN not work?
A VPN connection is established, but data is not being transmitted
One of the key factors affecting the performance of a VPN is the popularity of the service being used. Many companies providing VPN services aim to make a profit, so they may cut costs by reducing the number of servers and internet bandwidth, serving too many users.
This can result in slower internet speeds. Additionally, we would not recommend using free VPN services as they may provide access to your personal data and encryption keys, or trade your personal information and network usage statistics.
The connection is established by IP address, but not by name
The connection is established by IP address, but not by name.
One of the most complex errors you can encounter while working on the internet is the inability to open a specific website, even if it is accessible to other users. In such a situation, you can try entering the IP address of the website in the browser’s address bar instead of its name.
If you were able to open the site using the IP address, then most likely the issue is related to DNS. Check which DNS settings are configured on your computer. However, to correctly find and change DNS settings, an average user should seek help from a specialist.
Programs restrict VPN operation
Firewalls and antivirus software may automatically block VPN connections. In this case, it is recommended to temporarily disable these programs. If that does not help, try adding the VPN client to the exceptions in the firewall and antivirus software, as well as unblocking ports.
To do this on your computer, go to “Start” — “Control Panel”, select “Windows Firewall”, then go to the “Exceptions” tab, click “Add program”, and save the changes. (present the text as an INSTRUCTION on an image)
Router does not support VPN
If purchasing a new device is not planned in the near future, try searching online for updates for your router’s firmware. Alternatively, as another way to solve the problem, you can seek help from your provider’s hotline.
Not connecting to the local network
VPN may not work if your IP address is in the same range as the IP addresses of your local network.
To find out your computer’s IP address, you can go to “Start”, select “Run”, type “cmd” and press “Enter”. In the command prompt window that opens, type “ipconfig / all” and press “Enter” on the keyboard. Check the “IP Address” section and if your IP address matches the range of IP addresses in the local network, you will need to change the settings of your home router. (present the text as an INSTRUCTION on an image)
Warning: changing router settings can be quite complex for the average user, so in case of encountering such a problem, we recommend seeking assistance from specialists.
What to do if the website is not found even with VPN?
If you have established a VPN connection but cannot find the desired website, make sure that:
You have selected the correct VPN server. Some VPN services offer servers in different countries, and if you have chosen a server in a country where the site is blocked, you will not be able to access it.
The website is not blocked in your country. Copyright infringement or political reasons may lead to website blocking, and certain sites may be blocked in specific countries for various reasons.
Your VPN is functioning correctly. Try opening another website that you know should work through VPN. If it does not open, you may have issues with your VPN connection.
Check your browser settings. Some browsers may block certain websites or require specific settings to access them.
If none of the above helps, try contacting the support of the VPN service to see if there are any issues on their end.
Where can you buy stable VPN services?
Finding a stable and fast VPN can be a challenging task. But with ZAMA, you can forget about any connection or VPN operation issues. Zama VPN provides fast and convenient internet access while guaranteeing security. By installing Zama on your smartphone, you can browse the internet without any time or speed restrictions.
We offer convenient registration and login methods through:
email,
appleId,
googleId,
QR-code.
With [ZAMA](https://zamavpn.com/), you can manage your sessions: connect up to 4 devices simultaneously and disconnect sessions from other devices if yours is the main one. Additionally, you will have access to a complete connection history if your login code is used by your acquaintances.
And of course, we care about user comfort and preferences: you can switch the app theme to light or dark mode and enjoy high speed thanks to the XLTS protocol, ensuring a stable connection.
Why does the VPN on mobile not connect or frequently disconnect?
If you are experiencing issues with connecting to a VPN on your mobile device, there are several possible reasons and solutions for this problem. Where to look to find the issue?
VPN settings. Make sure you have configured the VPN correctly on your device. If you are using a VPN app, ensure you have selected the right server and entered the correct connection details.
Internet connection. Your device must have a stable internet connection.
Security settings. Some VPN apps may block certain types of traffic or websites. Check the security settings of your VPN app and ensure you are not blocking necessary resources for the VPN to work.
What to do if all parameters are normal?
Restart your device. If all the above methods do not help, try restarting your device. This may help resolve some connection issues.
Contact support. Support specialists can help you troubleshoot the problem and restore the connection.
Why does the internet work poorly with VPN?
Using a VPN can affect the speed and quality of the internet (both mobile and Wi-Fi) as data passes through an additional server, which can slow down upload and download speeds. Additionally, some VPN providers may limit speeds for certain types of traffic or websites, leading to internet issues.
If you are experiencing internet problems after connecting to a VPN, try checking:
VPN settings. Make sure you have selected the correct server and entered the right connection details.
Internet speed. Check your internet speed without using a VPN and compare it with the speed when using a VPN. If the speed significantly decreases with a VPN, consider choosing another VPN provider or adjusting the VPN settings.
Security settings. Some VPN apps may block certain types of traffic or websites. Check the security settings of your VPN app and ensure you are not blocking necessary resources for the VPN to work.
Connection issues with VPN can be caused by various factors. However, Zama VPN strives to help its users resolve connection issues and avoid disruptions.
If you encounter problems connecting to a VPN, contact our support team — specialists will help you solve the problem and ensure a stable and secure internet connection. | zama_vpn |
1,918,648 | How Image Processing Transforms Industries: 5 Key Use Cases | Introduction A recent report by Research and Markets indicates that the digital image... | 0 | 2024-07-10T14:57:46 | https://dev.to/api4ai/how-image-processing-transforms-industries-5-key-use-cases-n0a | api4ai, imageprocessing, ai, api | #Introduction
A recent [report by Research and Markets](https://www.researchandmarkets.com/reports/5972840/digital-image-processing-global-market-report#tag-pos-2) indicates that the digital image processing sector has seen remarkable growth in recent years. The market is expected to expand from $6.79 billion in 2023 to $8.34 billion in 2024, with a compound annual growth rate (CAGR) of 22.8%. Furthermore, projections show the market size reaching $19.27 billion by 2028, growing at a CAGR of 23.3%. This significant expansion highlights the growing dependence on image processing technology across various sectors. From enhancing product quality to improving medical diagnostics, image processing is transforming business operations and fostering innovation.
Image processing involves the manipulation and examination of visual data to derive valuable insights and support decision-making. Leveraging advanced algorithms and machine learning, this technology can scrutinize images and videos to detect patterns, recognize objects, and automate intricate processes. In today’s dynamic business environment, the capacity to efficiently process and interpret visual information is becoming a crucial competitive edge.
In this blog post, we will explore the top five applications of image processing in business and industry. From guaranteeing impeccable product quality to bolstering security protocols, you will discover how this state-of-the-art technology is driving innovation and efficiency across diverse sectors. Whether you are in manufacturing, healthcare, retail, or agriculture, understanding these applications can help you utilize image processing to optimize your operations and maintain a competitive advantage. Let's delve into these transformative use cases!
## 1. Quality Assurance and Inspection
### Overview
Quality assurance and inspection are essential aspects of manufacturing and production workflows. These processes guarantee that products adhere to established standards and are devoid of defects prior to reaching the end user. Historically, these responsibilities were handled manually, but technological advancements have transformed quality assurance and inspection through image processing, enhancing their efficiency and dependability.
### Use Case Details
**Automated Defect Detection**
Image processing technology is employed to automate defect detection on production lines. High-resolution cameras capture images of products as they move along conveyor belts. These images are then analyzed in real-time using sophisticated algorithms capable of identifying imperfections such as scratches, dents, or misalignments that may be imperceptible to the human eye. This automated system swiftly identifies and flags defective items, ensuring that only products meeting quality standards advance to the next stage of production.
**Benefits**
Implementing image processing for automated defect detection provides several key advantages:
- **Enhanced Precision**: Image processing systems can identify even the tiniest defects with high accuracy, thereby improving overall product quality.
- **Minimized Human Error**: Automation reduces dependence on human inspectors, significantly lowering the risk of errors caused by fatigue or oversight.
- **Cost Efficiency**: By detecting defects early in the production process, companies can avoid the expenses associated with rework, returns, and recalls, ultimately saving both money and resources.
### Case Studies/Examples
**Example 1: BMW**
BMW, a renowned global automobile manufacturer, has incorporated image processing technology into its production lines to improve quality assurance. High-speed cameras and sophisticated image analysis software are utilized to inspect every vehicle component for defects. This ensures that only products meeting BMW's rigorous quality standards make it to market. The adoption of this technology has significantly reduced production costs and enhanced product quality, thereby upholding BMW's reputation for reliability and excellence.
**Example 2: Nestlé**
Nestlé, the world's largest food and beverage company, employs image processing technology to maintain product quality. Automated systems equipped with high-resolution cameras inspect packaging and product appearance to identify defects such as mislabeling, incorrect filling, and contamination. By utilizing these automated inspection systems, Nestlé has maintained high standards of product quality while reducing waste and operational expenses.
**Example 3: Intel**
In the semiconductor industry, Intel uses image processing for wafer inspection. This technology detects minute defects on silicon wafers, crucial in microchip production. The high level of precision ensures Intel’s microchips are of the highest quality, enhancing the performance and reliability of their electronic products. By automating the inspection process, Intel has achieved greater accuracy and efficiency, resulting in significant cost savings and improved product yields.
By leveraging image processing technology, companies like BMW, Nestlé, and Intel have not only enhanced their quality control processes but also gained a competitive advantage in their respective industries. This illustrates the transformative potential of image processing in ensuring product excellence and operational efficiency.
## 2. Medical Imaging and Diagnostics
### Overview
Image processing is essential in healthcare, enhancing the ability to diagnose, monitor, and treat diseases using advanced imaging technologies. It employs sophisticated algorithms to analyze medical images, such as MRIs, CT scans, and X-rays, providing healthcare professionals with deeper insights into patient conditions. This technology not only boosts diagnostic accuracy but also aids in early disease detection, leading to better patient outcomes.
### Use Case Details
**Disease Detection and Monitoring**
Image processing is crucial in detecting and monitoring diseases like cancer. Advanced imaging methods, including MRI (Magnetic Resonance Imaging), CT (Computed Tomography) scans, and X-rays, are vital to modern diagnostics. Image processing algorithms scrutinize these images to identify abnormal growths, tumors, or lesions indicative of cancer. For example:
- **MRI**: Utilized for detecting brain tumors, spinal cord injuries, and other anomalies.
- **CT Scans**: Used to identify lung cancer, liver tumors, and complex fractures.
- **X-rays**: Essential for diagnosing bone fractures, infections, and arthritis.
**Enhanced Image Clarity**
Image processing algorithms improve the quality and usability of medical images by reducing noise, enhancing contrast, and sharpening details. Techniques such as image segmentation, filtering, and reconstruction are used to produce clearer and more detailed images. This allows radiologists and medical professionals to make more accurate diagnoses by providing better visual representations of tissues and organs.
**Benefits**
- **Early Detection of Diseases**: Image processing facilitates the early detection of diseases, which is crucial for effective treatment and increased survival rates.
- **Improved Diagnostic Accuracy**: Enhanced image clarity and detailed analysis enable more precise diagnoses, reducing the risk of misdiagnosis.
- **Better Patient Outcomes**: Early and accurate detection leads to timely interventions, improved treatment plans, and overall better health outcomes for patients.
## 3. Security and Surveillance
### Overview
Security and surveillance are crucial elements in various sectors, including transportation, corporate settings, public safety, and retail. Ensuring the safety of people, assets, and information is of utmost importance. Image processing technology has become a vital tool in enhancing security measures with advanced monitoring and threat detection capabilities.
### Use Case Details
**Facial Recognition**
Facial recognition technology, driven by image processing, is extensively used for identifying individuals and verifying identities in security applications. Cameras equipped with facial recognition software scan and capture facial features, which are then matched against a database of known faces. This technology is employed for:
- **Access Control**: Limiting entry to authorized personnel in secure areas.
- **Criminal Identification**: Identifying suspects in real-time in public spaces or at crime scenes.
- **Attendance Monitoring**: Tracking employee attendance in corporate offices.
**Anomaly Detection**
Image processing algorithms can automatically detect suspicious activities or security breaches by analyzing surveillance footage in real-time. These systems are designed to identify unusual patterns or behaviors, such as:
- **Intrusion Detection**: Recognizing unauthorized entry into restricted areas.
- **Object Detection**: Spotting abandoned objects that could pose security threats.
- **Behavior Analysis**: Detecting aggressive behavior or unusual movements in crowds.
**Benefits**
- **Improved Security**: Image processing significantly boosts overall security by offering precise and dependable identification and threat detection.
- **Live Monitoring**: Ongoing surveillance and instant analysis facilitate the rapid identification of potential threats.
- **Rapid Response to Threats**: Automated alerts and notifications enable security personnel to quickly address incidents, reducing risks and preventing harm.
### Case Studies/Examples
**Example 1: Airports**
Major airports such as Heathrow and Hartsfield-Jackson Atlanta International have adopted facial recognition technology to streamline passenger processing and enhance security measures. By employing facial recognition for check-in, boarding, and customs clearance, these airports have significantly reduced wait times and improved the accuracy of identity verification. This technology also helps identify individuals on watchlists, thereby bolstering overall airport security.
**Example 2: Corporate Offices**
Leading tech companies like Google and Apple use image processing for security and surveillance within their corporate offices. Facial recognition systems manage access to sensitive areas, ensuring that only authorized employees can enter. Additionally, anomaly detection systems monitor live camera feeds to spot suspicious activities, allowing security teams to respond swiftly to any potential threats.
**Example 3: Public Spaces**
Cities like New York and London have deployed extensive surveillance networks powered by image processing to enhance public safety. These systems utilize facial recognition to identify individuals involved in criminal activities and anomaly detection to monitor for unusual behaviors in crowded areas. The technology has proven effective in preventing crimes and ensuring rapid response times by law enforcement agencies.
By integrating image processing technology into security and surveillance systems, various industries can achieve higher levels of safety and efficiency. The capability to accurately identify individuals, detect suspicious activities, and respond quickly to potential threats highlights the transformative impact of image processing on modern security systems.
## 4. Retail and E-commerce
### Overview
In the retail and e-commerce industries, image processing technology is a game-changer for enhancing customer experiences and streamlining operational efficiency. From enabling advanced visual search features to improving inventory management, image processing is revolutionizing how retailers and online platforms engage with customers and manage their inventory.
### Use Case Details
**Visual Search and Recommendation Systems**
Image processing technology empowers customers to find products through visual search engines. By uploading an image or using their device's camera, customers can search for products that match the visual characteristics of the item they are interested in. This is especially beneficial for:
- **Fashion Retail**: Customers can snap a picture of an outfit they like and discover similar items available for purchase.
- **Home Decor**: Shoppers can take photos of furniture or decor items and find comparable products online. Additionally, recommendation systems use image processing to analyze product images and suggest similar or complementary items to customers, enhancing their shopping experience.
**Inventory Management**
Image recognition is transforming inventory management by providing precise tracking and real-time monitoring of stock levels. Retailers use image processing to:
- **Automate Stock Counts**: Drones or cameras capture images of warehouse shelves, and image recognition algorithms analyze these images to count and track inventory.
- **Identify Stock Discrepancies**: Quickly detect mismatches between physical stock and inventory records, reducing the risk of stockouts or overstock situations.
**Benefits**
- **Enhanced Customer Experience**: Visual search engines and personalized recommendations make it easier for customers to find what they want, improving their overall shopping experience.
- **Efficient Inventory Management**: Automated and accurate inventory tracking saves time and reduces errors, ensuring that stock levels are always current.
- **Personalized Shopping Recommendations**: By analyzing visual data, retailers can provide tailored product suggestions, increasing customer satisfaction and boosting sales.
### Case Studies/Examples
**Example 1: ASOS**
ASOS, a prominent online fashion retailer, leverages visual search technology to assist customers in finding clothing and accessories. Their "Style Match" feature allows users to upload photos of outfits they admire, and the app suggests similar items from ASOS's vast catalog. This feature has greatly enhanced customer engagement and satisfaction by making the shopping experience more intuitive and enjoyable.
**Example 2: Walmart**
Walmart utilizes image processing for inventory management in its warehouses. The company employs drones equipped with cameras to navigate the aisles and capture images of the shelves. Image recognition algorithms then analyze these images to monitor inventory levels and identify discrepancies. This automation has significantly reduced the time and labor required for stock management, leading to more efficient operations.
**Example 3: Pinterest**
Pinterest has incorporated visual search technology into its platform with the "Lens" feature. Users can take a photo or use an existing image to search for similar items on Pinterest. This feature has not only boosted user engagement but also benefited retailers by driving traffic to their products. Pinterest's use of image processing has become a valuable tool for both consumers and businesses, creating a seamless shopping experience.
By harnessing image processing technology, retailers and e-commerce platforms like ASOS, Walmart, and Pinterest have successfully improved their customer experience and operational efficiency. This illustrates the profound impact of image processing in the retail and e-commerce sectors, driving innovation and enhancing overall business performance.
## 5. Agriculture and Farming
### Overview
Image processing is revolutionizing modern agriculture by equipping farmers with advanced tools to enhance crop productivity, monitor plant health, and optimize resource management. By integrating technologies such as drones and satellites with image processing algorithms, agriculture is becoming more efficient, sustainable, and data-driven.
### Use Case Details
**Crop Monitoring and Disease Detection**
Drones and satellites equipped with high-resolution cameras and image processing technology are used for continuous crop health monitoring. These devices capture detailed images of the fields, which are then analyzed to:
- **Identify Plant Stress**: Detect early signs of water stress, nutrient deficiencies, and other growth issues.
- **Spot Diseases and Pests**: Recognize disease symptoms and pest infestations before they spread, enabling timely interventions.
**Yield Estimation**
Image processing also plays a crucial role in accurately estimating crop yields. By analyzing images captured throughout the growing season, farmers can:
- **Predict Harvest Quantities**: Estimate potential yield based on plant health, density, and growth rates.
- **Plan Harvests Efficiently**: Determine the optimal harvesting time to maximize yield and quality.
**Benefits**
- **Boosted Crop Yields**: Improved monitoring and early disease detection result in better crop management and increased productivity.
- **Timely Disease Control**: Early identification and treatment of diseases and pests help prevent extensive damage.
- **Optimized Resource Usage**: Efficient use of water, fertilizers, and pesticides based on accurate data from image analysis reduces waste and minimizes environmental impact.
### Case Studies/Examples
**Example 1: John Deere**
John Deere, a prominent leader in agricultural machinery, has incorporated image processing technology into its equipment. Their precision agriculture solutions utilize drone and satellite imagery to monitor crop health and detect issues such as nutrient deficiencies and pest infestations. This technology assists farmers in making informed decisions regarding irrigation, fertilization, and pest control, leading to enhanced crop yields and reduced input costs.
**Example 2: Climate Corporation**
Climate Corporation, a subsidiary of Bayer, provides digital farming solutions that leverage image processing for crop monitoring and yield prediction. Their FieldView platform gathers data from satellites and drones to offer farmers detailed insights into their fields. This data-driven approach allows farmers to optimize their planting and harvesting schedules, thereby improving overall farm efficiency and productivity.
**Example 3: VineView**
VineView specializes in delivering aerial imaging services to vineyards. Utilizing drone and satellite imagery, they provide comprehensive analyses of vine health, identifying issues such as water stress, nutrient deficiencies, and disease outbreaks. This precise monitoring enables vineyard managers to take targeted actions, enhancing grape quality and yield while minimizing resource usage.
These examples demonstrate how agricultural enterprises like John Deere, Climate Corporation, and VineView are utilizing image processing technology to refine their operations. By facilitating precise crop monitoring, early disease detection, and accurate yield estimation, image processing is significantly boosting agricultural productivity and sustainability.
#Conclusion
In this blog post, we delved into five transformative use cases for image processing across various business sectors:
1. **Quality Control and Inspection**: Image processing boosts the accuracy and efficiency of defect detection in manufacturing, resulting in superior product quality and reduced costs.
2. **Medical Imaging and Diagnostics**: Advanced algorithms enhance the clarity and usability of medical images, facilitating early disease detection and more accurate diagnoses, which lead to better patient outcomes.
3. **Security and Surveillance**: Facial recognition and anomaly detection technologies offer enhanced security, real-time monitoring, and swift responses to potential threats in diverse settings.
4. **Retail and E-commerce**: Visual search engines and image recognition for inventory management elevate customer experience, operational efficiency, and personalized shopping recommendations.
5. **Agriculture and Farming**: Drones and satellite imaging enable monitoring of crop health, early disease detection, and yield estimation, increasing productivity and optimizing resource management.
Looking ahead, emerging trends in image processing technology promise even greater advancements. The integration of artificial intelligence and machine learning will continue to enhance the capabilities of image processing systems, enabling more sophisticated analyses and predictions. The development of 3D imaging and augmented reality applications will further expand the potential uses of image processing across various industries. Additionally, advancements in edge computing will allow for faster image processing directly at the source, reducing latency and improving real-time decision-making.
We encourage you to explore how image processing technology can benefit your own business. Whether aiming to improve product quality, enhance security, optimize operations, or drive innovation, the applications of image processing are extensive and impactful.
[More stories about Cloud, AI and APIs for Image Processing](https://api4.ai/blog)
| taranamurtuzova |
1,918,650 | Buy verified cash app account | https://dmhelpshop.com/product/buy-verified-cash-app-account/ Buy verified cash app account Cash... | 0 | 2024-07-10T15:01:56 | https://dev.to/figema4733/buy-verified-cash-app-account-2ae | webdev, javascript, beginners, programming | ERROR: type should be string, got "https://dmhelpshop.com/product/buy-verified-cash-app-account/\n\n\nBuy verified cash app account\nCash app has emerged as a dominant force in the realm of mobile banking within the USA, offering unparalleled convenience for digital money transfers, deposits, and trading. As the foremost provider of fully verified cash app accounts, we take pride in our ability to deliver accounts with substantial limits. Bitcoin enablement, and an unmatched level of security.\n\nOur commitment to facilitating seamless transactions and enabling digital currency trades has garnered significant acclaim, as evidenced by the overwhelming response from our satisfied clientele. 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How To Buy Verified Cash App Accounts.\n\nAfter submitting your information, including your registered number, expiration date, and CVV code, you can start making payments by conveniently tapping your card on a contactless-enabled payment terminal. Consider obtaining a buy verified Cash App account for seamless transactions, especially for business purposes. Buy verified cash app account.\n\nWhy we suggest to unchanged the Cash App account username?\nTo activate your Cash Card, open the Cash App on your compatible device, locate the Cash Card icon at the bottom of the screen, and tap on it. Then select “Activate Cash Card” and proceed to scan the QR code on your card.\n\nAlternatively, you can manually enter the CVV and expiration date. After submitting your information, including your registered number, expiration date, and CVV code, you can start making payments by conveniently tapping your card on a contactless-enabled payment terminal. Consider obtaining a verified Cash App account for seamless transactions, especially for business purposes. Buy verified cash app account. Purchase Verified Cash App Accounts.\n\nSelecting a username in an app usually comes with the understanding that it cannot be easily changed within the app’s settings or options. This deliberate control is in place to uphold consistency and minimize potential user confusion, especially for those who have added you as a contact using your username. In addition, purchasing a Cash App account with verified genuine documents already linked to the account ensures a reliable and secure transaction experience.\n\n \n\nBuy verified cash app accounts quickly and easily for all your financial needs.\nAs the user base of our platform continues to grow, the significance of verified accounts cannot be overstated for both businesses and individuals seeking to leverage its full range of features. 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With numerous providers offering this service at competitive prices, it is paramount to be diligent in selecting a trusted source.\n\nThis article serves as a comprehensive guide, equipping you with the essential knowledge to navigate the process of procuring buy verified cash app account, ensuring that you are well-informed before making any purchasing decisions. Understanding the fundamentals is key, and by following this guide, you’ll be empowered to make informed choices with confidence.\n\n \n\nIs it safe to buy Cash App Verified Accounts?\nCash App, being a prominent peer-to-peer mobile payment application, is widely utilized by numerous individuals for their transactions. However, concerns regarding its safety have arisen, particularly pertaining to the purchase of “verified” accounts through Cash App. This raises questions about the security of Cash App’s verification process.\n\nUnfortunately, the answer is negative, as buying such verified accounts entails risks and is deemed unsafe. Therefore, it is crucial for everyone to exercise caution and be aware of potential vulnerabilities when using Cash App. How To Buy Verified Cash App Accounts.\n\nCash App has emerged as a widely embraced platform for purchasing Instagram Followers using PayPal, catering to a diverse range of users. This convenient application permits individuals possessing a PayPal account to procure authenticated Instagram Followers.\n\nLeveraging the Cash App, users can either opt to procure followers for a predetermined quantity or exercise patience until their account accrues a substantial follower count, subsequently making a bulk purchase. Although the Cash App provides this service, it is crucial to discern between genuine and counterfeit items. If you find yourself in search of counterfeit products such as a Rolex, a Louis Vuitton item, or a Louis Vuitton bag, there are two viable approaches to consider.\n\n \n\nWhy you need to buy verified Cash App accounts personal or business?\nThe Cash App is a versatile digital wallet enabling seamless money transfers among its users. However, it presents a concern as it facilitates transfer to both verified and unverified individuals.\n\nTo address this, the Cash App offers the option to become a verified user, which unlocks a range of advantages. Verified users can enjoy perks such as express payment, immediate issue resolution, and a generous interest-free period of up to two weeks. With its user-friendly interface and enhanced capabilities, the Cash App caters to the needs of a wide audience, ensuring convenient and secure digital transactions for all.\n\nIf you’re a business person seeking additional funds to expand your business, we have a solution for you. Payroll management can often be a challenging task, regardless of whether you’re a small family-run business or a large corporation. How To Buy Verified Cash App Accounts.\n\nImproper payment practices can lead to potential issues with your employees, as they could report you to the government. However, worry not, as we offer a reliable and efficient way to ensure proper payroll management, avoiding any potential complications. Our services provide you with the funds you need without compromising your reputation or legal standing. With our assistance, you can focus on growing your business while maintaining a professional and compliant relationship with your employees. Purchase Verified Cash App Accounts.\n\nA Cash App has emerged as a leading peer-to-peer payment method, catering to a wide range of users. With its seamless functionality, individuals can effortlessly send and receive cash in a matter of seconds, bypassing the need for a traditional bank account or social security number. Buy verified cash app account.\n\nThis accessibility makes it particularly appealing to millennials, addressing a common challenge they face in accessing physical currency. As a result, ACash App has established itself as a preferred choice among diverse audiences, enabling swift and hassle-free transactions for everyone. Purchase Verified Cash App Accounts.\n\n \n\nHow to verify Cash App accounts\nTo ensure the verification of your Cash App account, it is essential to securely store all your required documents in your account. This process includes accurately supplying your date of birth and verifying the US or UK phone number linked to your Cash App account.\n\nAs part of the verification process, you will be asked to submit accurate personal details such as your date of birth, the last four digits of your SSN, and your email address. If additional information is requested by the Cash App community to validate your account, be prepared to provide it promptly. Upon successful verification, you will gain full access to managing your account balance, as well as sending and receiving funds seamlessly. Buy verified cash app account.\n\n \n\nHow cash used for international transaction?\nExperience the seamless convenience of this innovative platform that simplifies money transfers to the level of sending a text message. 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Buy verified cash app account.\n\nOffers and advantage to buy cash app accounts cheap?\nWith Cash App, the possibilities are endless, offering numerous advantages in online marketing, cryptocurrency trading, and mobile banking while ensuring high security. As a top creator of Cash App accounts, our team possesses unparalleled expertise in navigating the platform.\n\nWe deliver accounts with maximum security and unwavering loyalty at competitive prices unmatched by other agencies. Rest assured, you can trust our services without hesitation, as we prioritize your peace of mind and satisfaction above all else.\n\nEnhance your business operations effortlessly by utilizing the Cash App e-wallet for seamless payment processing, money transfers, and various other essential tasks. Amidst a myriad of transaction platforms in existence today, the Cash App e-wallet stands out as a premier choice, offering users a multitude of functions to streamline their financial activities effectively. Buy verified cash app account.\n\nTrustbizs.com stands by the Cash App’s superiority and recommends acquiring your Cash App accounts from this trusted source to optimize your business potential.\n\nHow Customizable are the Payment Options on Cash App for Businesses?\nDiscover the flexible payment options available to businesses on Cash App, enabling a range of customization features to streamline transactions. Business users have the ability to adjust transaction amounts, incorporate tipping options, and leverage robust reporting tools for enhanced financial management.\n\nExplore trustbizs.com to acquire verified Cash App accounts with LD backup at a competitive price, ensuring a secure and efficient payment solution for your business needs. Buy verified cash app account.\n\nDiscover Cash App, an innovative platform ideal for small business owners and entrepreneurs aiming to simplify their financial operations. With its intuitive interface, Cash App empowers businesses to seamlessly receive payments and effectively oversee their finances. Emphasizing customization, this app accommodates a variety of business requirements and preferences, making it a versatile tool for all.\n\nWhere To Buy Verified Cash App Accounts\nWhen considering purchasing a verified Cash App account, it is imperative to carefully scrutinize the seller’s pricing and payment methods. Look for pricing that aligns with the market value, ensuring transparency and legitimacy. Buy verified cash app account.\n\nEqually important is the need to opt for sellers who provide secure payment channels to safeguard your financial data. Trust your intuition; skepticism towards deals that appear overly advantageous or sellers who raise red flags is warranted. It is always wise to prioritize caution and explore alternative avenues if uncertainties arise.\n\nThe Importance Of Verified Cash App Accounts\nIn today’s digital age, the significance of verified Cash App accounts cannot be overstated, as they serve as a cornerstone for secure and trustworthy online transactions.\n\nBy acquiring verified Cash App accounts, users not only establish credibility but also instill the confidence required to participate in financial endeavors with peace of mind, thus solidifying its status as an indispensable asset for individuals navigating the digital marketplace.\n\nWhen considering purchasing a verified Cash App account, it is imperative to carefully scrutinize the seller’s pricing and payment methods. Look for pricing that aligns with the market value, ensuring transparency and legitimacy. Buy verified cash app account.\n\nEqually important is the need to opt for sellers who provide secure payment channels to safeguard your financial data. Trust your intuition; skepticism towards deals that appear overly advantageous or sellers who raise red flags is warranted. It is always wise to prioritize caution and explore alternative avenues if uncertainties arise.\n\nConclusion\nEnhance your online financial transactions with verified Cash App accounts, a secure and convenient option for all individuals. By purchasing these accounts, you can access exclusive features, benefit from higher transaction limits, and enjoy enhanced protection against fraudulent activities. Streamline your financial interactions and experience peace of mind knowing your transactions are secure and efficient with verified Cash App accounts.\n\nChoose a trusted provider when acquiring accounts to guarantee legitimacy and reliability. In an era where Cash App is increasingly favored for financial transactions, possessing a verified account offers users peace of mind and ease in managing their finances. Make informed decisions to safeguard your financial assets and streamline your personal transactions effectively.\n\nContact Us / 24 Hours Reply\nTelegram:dmhelpshop\nWhatsApp: +1 (980) 277-2786\nSkype:dmhelpshop\nEmail:dmhelpshop@gmail.com\n\n" | figema4733 |
1,918,651 | The Role of AI in Web Development | Artificial Intelligence (AI) is rapidly transforming the tech landscape EVERYWHERE! And web... | 0 | 2024-07-10T15:02:07 | https://dev.to/buildwebcrumbs/the-role-of-ai-in-web-development-17dd | ai, webdev, javascript, programming | Artificial Intelligence (AI) is rapidly transforming the tech landscape EVERYWHERE! And web development is no exception.
In this article, we delve into how AI is reshaping this field, enhancing the efficiency and creativity of developers worldwide.
We'll share insights from Webcrumbs’ own tool, [FrontendAI](https://tools.webcrumbs.org/), which exemplifies the powerful impact of AI in automating and optimizing web development processes.
---
## The Evolution of Web Development with AI
The journey of web development from static HTML pages to dynamic, complex web applications has been dramatic. The integration of AI has accelerated this evolution, introducing automation in tasks that once demanded extensive human effort.
Today, AI-driven tools are crucial for tasks ranging from automated testing to advanced, intelligent design.
---
## Future of AI in Web Development
The potential for AI in web development is boundless, with future innovations likely to include more personalized user experiences and even more autonomous project management tools. Webcrumbs is committed to leading this charge, continuously updating FrontendAI with the latest advancements to keep it at the cutting edge of technology.
AI is revolutionizing web development, pushing the boundaries of what's possible and enabling developers to achieve more with less effort.
---
## Introducing FrontendAI by Webcrumbs
[FrontendAI](https://tools.webcrumbs.org/) is a that tool leverages sophisticated AI algorithms to convert visual designs or text directly into functional code. This not only speeds up the development process but also enhances the accuracy and consistency of the final product.
By automating routine coding tasks, [FrontendAI](https://tools.webcrumbs.org/) frees us to focus on more complex and innovative aspects of web development.
---
## 🌟 **Join the Webcrumbs Community** 🌟
Are you ready to explore the future of web development with AI?
Join our community by starring our project on GitHub and contribute to the evolution of this exciting technology. 👉 [Star Webcrumbs on GitHub](https://github.com/webcrumbs-community/webcrumbs/)
Want to know more about what we are building?
Feel free [to schedule some time to talk with our CEO](https://calendly.com/webcrumbs), Julia Machado, so she can show you where we are heading and you can tell us our early thoughts! | opensourcee |
1,918,653 | 10 Unique HTML Elements You Might Not Know | The world of web development extends far beyond the familiar <div>, <p>, and <img>... | 0 | 2024-07-10T15:06:49 | https://dev.to/futuristicgeeks/10-unique-html-elements-you-might-not-know-3djl | webdev, programming, html, frontend | The world of web development extends far beyond the familiar `<div>, <p>, and <img> tags`. HTML offers a treasure trove of lesser-known elements that can elevate your creations and provide a more engaging user experience. Here, we’ll delve into 10 unique HTML elements you might not have encountered yet, along with examples to illustrate their potential:
## 1. Responsive Images with <picture> and <source>:
Imagine a website that automatically delivers the perfect image size for any device. That’s the magic of <picture> and <source>. Here’s how it works:
`<picture>
<source srcset="image-large.jpg" media="(min-width: 768px)">
<source srcset="image-medium.jpg" media="(min-width: 480px)">
<img src="image-small.jpg" alt="A beautiful landscape">
</picture>`
This code defines three image options: a large image for desktops, a medium image for tablets, and a smaller default image. The browser intelligently chooses the most suitable image based on the user’s screen size, ensuring faster loading times and a smooth experience.
## 2. Interactive Accordions with <details> and <summary>:
Want to create expandable sections that reveal more information on demand? Look no further than the dynamic duo of <details> and <summary>.
`<details>
<summary>Click to learn more about us</summary>
<p>We are a passionate team dedicated to building exceptional web experiences.</p>
</details>`
This code creates a collapsible section. Clicking the “Click to learn more about us” summary toggles the visibility of the paragraph content, allowing users to control information flow and declutter the page.
## 3. Annotated Text with <mark> and <del>:
Highlighting important changes or edits becomes effortless with these elements. <mark> creates a highlighted section, drawing attention to specific text:
`We are excited to announce the <mark>launch</mark> of our new website!`
On the other hand, <del> represents deleted content, typically displayed with a strikethrough effect:
`Our previous website was located at <del>www.oldwebsite.com</del>.`
## 4. Visualize Progress with <progress>:
Ever encountered a loading bar that keeps you informed? That’s the <progress> element in action.
`<progress value="50" max="100">50% complete</progress>`
This code displays a progress bar that’s half filled (value set to 50) with a maximum value of 100. You can style the appearance using CSS to create informative and visually appealing progress indicators.
## 5. Gauge Measurements with <meter>:
Similar to <progress>, the <meter> element represents a value within a defined range. Imagine a gauge that displays storage space usage:
`<meter value="70" min="0" max="100">70% full</meter>`
This code displays a gauge that’s 70% full (value set to 70) with a minimum value of 0 and a maximum value of 100. You can customize the gauge’s appearance using CSS to effectively represent various scalar measurements.
## 6. Semantic Dates and Times with <time>:
Go beyond just displaying dates and times. The <time> element provides a semantic way for search engines and assistive technologies to understand the temporal nature of your content.
`This article was last updated on <time datetime="2024-07-10">July 10, 2024</time>.`
This code not only displays the date but also embeds machine-readable information using the datetime attribute, improving accessibility and SEO.
## 7. Elegant Word Wrapping with <wbr>:
Ensuring proper text wrapping on various screen sizes can be tricky. The <wbr> element offers a subtle solution. It doesn’t force a line break but suggests to the browser that a word can be broken at that point if needed:
`This is a very long URL that can potentially overflow on narrow screens. Let's add a <wbr> for better wrapping: http://www.verylongwebsitewithalongeverylongname.com`
This code suggests a break point within the long URL, allowing the browser to wrap the text more gracefully on smaller screens.
## 8. Reusable Content with <template>:
Imagine creating a standard layout for blog posts or product listings without duplicating code. The <template> element makes this possible.
`<template id="postTemplate">
<h2>{title}</h2>
<p>{content}</p>
</template>
<script>
const template = document.getElementById('postTemplate');
const title = "A New Blog Post";
const content = "This is some exciting content for the new blog post!";
// Clone the template and populate its content
const newPost = template.content.cloneNode(true);
newPost.querySelector('h2').textContent = title;
newPost.querySelector('p').textContent = content;
// Append the populated template to the document body
document.body.appendChild(newPost);
</script>`
This code defines a template with placeholders for title and content. The JavaScript then clones the template, populates the placeholders with dynamic data, and inserts the new post into the webpage.
## 9. Declarative Popups with <dialog>:
Forget complex JavaScript for modal windows. The <dialog> element offers a declarative approach.
`<dialog id="confirmationDialog">
<h2>Are you sure?</h2>
<p>This action cannot be undone.</p>
<button>Yes</button>
<button>Cancel</button>
</dialog>
<button onclick="document.getElementById('confirmationDialog').showModal()">Confirm</button>`
This code defines a modal dialog with content and buttons. Clicking the “Confirm” button opens the dialog using JavaScript’s showModal() method. You can style the dialog’s appearance using CSS for a seamless user experience.
## 10. Enhanced Form Filling with <datalist>:
Streamline form filling by providing auto-completion suggestions with <datalist>.
`<label for="color">Choose a color:</label>
<input list="colorOptions" id="color" name="color">
<datalist id="colorOptions">
<option value="Red">
<option value="Green">
<option value="Blue">
</datalist>`
[Read more on FuturisticGeeks](https://futuristicgeeks.com/10-unique-html-elements-you-might-not-know/) | futuristicgeeks |
1,918,654 | Homemade Caching - pt. 2 | In the second part of the story describing our Homemade Caching strategy in Laravel, we delve into... | 0 | 2024-07-10T15:07:21 | https://dev.to/sharesquare/homemade-caching-pt-2-356n | performance, laravel, restapi, php | In the [second part](https://sharesquare-engineering.medium.com/homemade-caching-with-laravel-part-two-b5fa808863c7) of the story describing our Homemade Caching strategy in Laravel, we delve into even more succulent and technical details around cache invalidation and refreshing.
With this second part, we complete our most advanced story so far! It took us a month of work to get it to work perfectly, but if you follow the stories it will take you just a couple of hours!
If you have not yet read the [first part](https://dev.to/sharesquare/homemade-caching-379l), start there. | sharesquare |
1,918,655 | معرفی بازی انفجار | بازی انفجار یکی از محبوبترین بازیهای کازینو آنلاین است بازی انفجار (یا همان Crash) در واقع یک بازی... | 0 | 2024-07-10T15:07:38 | https://dev.to/sasan_taheri_f0d672cc7e84/mrfy-bzy-nfjr-951 | enfejar | [بازی انفجار](https://enfej.site/) یکی از محبوبترین بازیهای کازینو آنلاین است
بازی انفجار (یا همان Crash) در واقع یک بازی شرطبندی آنلاین است که در بسیاری از سایتهای کازینو آنلاین قابل دسترسی است. در این بازی، شما باید ضریب بازی را قبل از بسته شدن حدس بزنید و مبلغی که برای شرط بندی قرار دادید را برداشت کنید تا برنده بازی شوید در غیر این صورت بازنده خواهید بود و باید به روند بازی و تاریخچه آن دقت بیشتری داشته باشید.
 | sasan_taheri_f0d672cc7e84 |
1,918,656 | arange() and linspace() in PyTorch | *My post explains logspace(). arange() can create the 1D tensor of zero or integers or... | 0 | 2024-07-10T15:08:08 | https://dev.to/hyperkai/arange-and-linspace-in-pytorch-3ak7 | pytorch, arange, linspace, function | *[My post](https://dev.to/hyperkai/logspace-in-pytorch-3dom) explains [logspace()](https://pytorch.org/docs/stable/generated/torch.logspace.html).
[arange()](https://pytorch.org/docs/stable/generated/torch.arange.html) can create the 1D tensor of zero or integers or floating-point numbers between `start` and `end-1`(`start`<=x<=`end-1`)as shown below:
*Memos:
- `arange()` can be used with [torch](https://pytorch.org/docs/stable/torch.html) but not with a tensor.
- The 1st argument with `torch` is `start`(Optional-Default:`0`-Type:`int`, `float`, `complex` or `bool`):
*Memos
- It must be lower than or equal to `end`.
- The 0D tensor of `int`, `float`, `complex` or `bool` also works.
- The 2nd argument with `torch` is `end`(Required-Type:`int`, `float`, `complex` or `bool`):
*Memos:
- It must be greater than or equal to `start`.
- The 0D tensor of `int`, `float`, `complex` or `bool` also works.
- The 3rd argument with `torch` is `step`(Optional-Default:`1`-Type:`int`, `float`, `complex` or `bool`):
*Memos:
- It must be greater than 0.
- The 0D tensor of `int`, `float`, `complex` or `bool` also works.
- There is `dtype` argument with `torch`(Optional-Type:[dtype](https://pytorch.org/docs/stable/tensor_attributes.html#torch.dtype)):
*Memos:
- If `dtype` is not given, `dtype` is inferred from `start`, `end` or `step` or `dtype` of [set_default_dtype()](https://pytorch.org/docs/stable/generated/torch.set_default_dtype.html) is used for floating-point numbers.
- `dtype=` must be used.
- [My post](https://dev.to/hyperkai/set-dtype-with-dtype-argument-functions-and-get-it-in-pytorch-13h2) explains `dtype` argument.
- There is `device` argument with `torch`(Optional-Type:`str`, `int` or [device()](https://pytorch.org/docs/stable/tensor_attributes.html#torch.device)):
*Memos:
- `device=` must be used.
- [My post](https://dev.to/hyperkai/set-device-with-device-argument-functions-and-get-it-in-pytorch-1o2p) explains `device` argument.
- There is `requires_grad` argument with `torch`(Optional-Type:`bool`):
*Memos:
- `requires_grad=` must be used.
- [My post](https://dev.to/hyperkai/set-requiresgrad-with-requiresgrad-argument-functions-and-get-it-in-pytorch-39c3) explains `requires_grad` argument.
- There is `out` argument with `torch`(Optional-Type:`tensor`):
*Memos:
- `out=` must be used.
- [My post](https://dev.to/hyperkai/set-out-with-out-argument-functions-pytorch-3ee) explains `out` argument.
- There is [range()](https://pytorch.org/docs/stable/generated/torch.range.html) which is similar to `arange()` but `range()` is deprecated.
```python
import torch
torch.arange(end=5)
# tensor([0, 1, 2, 3, 4])
torch.arange(start=5, end=15)
# tensor([5, 6, 7, 8, 9, 10, 11, 12, 13, 14])
torch.arange(start=5, end=15, step=3)
# tensor([5, 8, 11, 14])
torch.arange(start=-5, end=5)
# tensor([-5, -4, -3, -2, -1, 0, 1, 2, 3, 4])
torch.arange(start=-5, end=5, step=3)
torch.arange(start=torch.tensor(-5),
end=torch.tensor(5),
step=torch.tensor(3))
# tensor([-5, -2, 1, 4])
torch.arange(start=-5., end=5., step=3.)
torch.arange(start=torch.tensor(-5.),
end=torch.tensor(5.),
step=torch.tensor(3.))
# tensor([-5., -2., 1., 4.])
torch.arange(start=-5.+0.j, end=5.+0.j, step=3.+0.j)
torch.arange(start=torch.tensor(-5.+0.j),
end=torch.tensor(5.+0.j),
step=torch.tensor(3.+0.j))
# tensor([-5., -2., 1., 4.])
torch.arange(start=False, end=True, step=True)
torch.arange(start=torch.tensor(False),
end=torch.tensor(True),
step=torch.tensor(True))
# tensor([0])
```
[linspace()](https://pytorch.org/docs/stable/generated/torch.linspace.html) can create the 1D tensor of the zero or more integers, floating-point numbers or complex numbers evenly spaced between `start` and `end`(`start`<=x<=`end`) as shown below:
*Memos:
- `linspace()` can be used with `torch` but not with a tensor.
- The 1st argument with `torch` is `start`(Required-Type:`int`, `float`, `complex` or `bool`). *The 0D tensor of `int`, `float`, `complex` or `bool` also works.
- The 2nd argument with `torch` is `end`(Required-Type:`int`, `float`, `complex` or `bool`). *The 0D tensor of `int`, `float`, `complex` or `bool` also works.
- The 3rd argument with `torch` is `steps`(Required-Type:`int`):
*Memos:
- It must be greater than or equal to 0.
- The 0D tensor of `int` also works.
- There is `dtype` argument with `torch`(Optional-Type:[dtype](https://pytorch.org/docs/stable/tensor_attributes.html#torch.dtype)):
*Memos:
- If `dtype` is not given, `dtype` is inferred from `start`, `end` or `step` or `dtype` of [set_default_dtype()](https://pytorch.org/docs/stable/generated/torch.set_default_dtype.html) is used for floating-point numbers.
- Setting `start` and `end` of integer type is not enough to create the 1D tensor of integer type so integer type with `dtype` must be set.
- `bool` cannot be used.
- `dtype=` must be used.
- [My post](https://dev.to/hyperkai/set-dtype-with-dtype-argument-functions-and-get-it-in-pytorch-13h2) explains `dtype` argument.
- There is `device` argument with `torch`(Optional-Type:`str`, `int` or [device()](https://pytorch.org/docs/stable/tensor_attributes.html#torch.device)):
*Memos:
- `device=` must be used.
- [My post](https://dev.to/hyperkai/set-device-with-device-argument-functions-and-get-it-in-pytorch-1o2p) explains `device` argument.
- There is `requires_grad` argument with `torch`(Optional-Type:`bool`):
*Memos:
- `requires_grad=` must be used.
- [My post](https://dev.to/hyperkai/set-requiresgrad-with-requiresgrad-argument-functions-and-get-it-in-pytorch-39c3) explains `requires_grad` argument.
- There is `out` argument with `torch`(Optional-Type:`tensor`):
*Memos:
- `out=` must be used.
- [My post](https://dev.to/hyperkai/set-out-with-out-argument-functions-pytorch-3ee) explains `out` argument.
```python
import torch
torch.linspace(start=10, end=20, steps=0)
torch.linspace(start=20, end=10, steps=0)
# tensor([])
torch.linspace(start=10., end=20., steps=1)
tensor([10.])
torch.linspace(start=20, end=10, steps=1)
# tensor([20.])
torch.linspace(start=10., end=20., steps=2)
# tensor([10., 20.])
torch.linspace(start=20, end=10, steps=2)
# tensor([20., 10.])
torch.linspace(start=10., end=20., steps=3)
# tensor([10., 15., 20.])
torch.linspace(start=20, end=10, steps=3)
# tensor([20., 15., 10.])
torch.linspace(start=10., end=20., steps=4)
# tensor([10.0000, 13.3333, 16.6667, 20.0000])
torch.linspace(start=20., end=10., steps=4)
# tensor([20.0000, 16.6667, 13.3333, 10.0000])
torch.linspace(start=10, end=20, steps=4, dtype=torch.int64)
torch.linspace(start=torch.tensor(10),
end=torch.tensor(20),
steps=torch.tensor(4),
dtype=torch.int64)
# tensor([10.0000, 13.3333, 16.6667, 20.0000])
torch.linspace(start=10.+6.j, end=20.+3.j, steps=4)
torch.linspace(start=torch.tensor(10.+6.j),
end=torch.tensor(20.+3.j),
steps=torch.tensor(4))
# tensor([10.0000+6.j, 13.3333+5.j, 16.6667+4.j, 20.0000+3.j])
torch.linspace(start=False, end=True, steps=4)
torch.linspace(start=torch.tensor(True),
end=torch.tensor(False),
steps=torch.tensor(4))
# tensor([0.0000, 0.3333, 0.6667, 1.0000])
torch.linspace(start=10, end=20, steps=4, dtype=torch.int64)
torch.linspace(start=torch.tensor(10),
end=torch.tensor(20),
steps=torch.tensor(4), dtype=torch.int64)
# tensor([10.0000, 13.3333, 16.6667, 20.0000])
``` | hyperkai |
1,918,657 | Learn react js by building a countdown timer | In this article, we are going to learn react js from scratch by building a countdown timer. We will... | 0 | 2024-07-10T15:08:23 | https://dev.to/kemiowoyele1/learn-react-js-by-building-a-countdown-timer-kej | In this article, we are going to learn react js from scratch by building a countdown timer. We will learn
• how to create new react app,
• to create a react component,
• to dynamically display content,
• to listen to and handle events
• to use the useState hook for state management and
• to manage function side effects with the useEffect hook
Our countdown time will
• accept input from the user to set time,
• validate if the time is in the future or the past;
• start counting down if the time is valid or alert the user to set the correct time if not
• When the counter counts to zero seconds, the user will be alerted that the time is up.
Before we start building the countdown timer with react.js, I’d like to let you know some of the assumptions I’ll be working with.
• I assume that you are proficient with HTML and CSS. I will not explain the HTML/CSS codes.
• I assume that you know JavaScript, and can probably build this project in vanilla JavaScript without much trouble. But I will try as much as possible to explain the JavaScript codes.
• I assume you are relatively new to react. I’ll explain all the react concepts as though you are completely new to react js.
## Create react app
The first thing you will need to do is to set up a react development environment. To do that, we will open our terminal and navigate to the location where we want to create the app and run
```
npx create-react-app countdown-timer
```
npx will run the code on the internet and create a basic react app for us with the name “countdown-timer” or whatever name you used as an alternative.
After the app is created, navigate into the folder and open it with a text editor. In the folder, you are going to find a couple of folders and files. Some of the folders include;
• node_modules folder: stores installed packages and dependencies. This folder is to be untouched.
• public folder: this folder serves as the directory for publicly accessible assets. Initial assets in this folder include index.html, favicon.ico, index.css, logo images, manifest.json, etc. Files in the public folder do not require imports, and can be accessed directly from the root folder. Files in this folder may be deleted or tampered with, except the index.html file.
• src folder: src is short for source. It is where the source codes are kept. All your styles, logic, components, etc. are going into the src folder.
**files
**
The files include .gitignore, package.json, package-lock.json, README.md. These files are not to be tampered with. Except for the git ignore, in case you added some assets that you want git to ignore.
• index.html is the entry point to your react application. This is the file that will be returned from the server. The root component is then mounted on the index.html and the rest of the app's logic and interface will handled from there on.
• Index.js file is where the root component is mounted to reactDOM.
• App.js is the root component. A component is an autonomous segment of content, usually containing its logic and its HTML-like template. A react app is made up of a component tree with the root component at the origin point of the other components
To run the app, open your terminal, ensure it is navigated to your app folder, and type
```
npm start
```
A localhost address will be made available to you for viewing your app.
## Create the CountDown component
In the src folder, create a CountDown.js file. Remember that the name of the file should start with an upper case, as this is the standard for component file naming. In the CountDown.js file, create a basic CountDown component and export the component.
**Countdown.js file**
```
const CountDown = () => {
return
(<></>);
};
export default CountDown;
```
In your App.js file, delete the already existing content of the page, and create a basic App component. Then import the CountDown component and render it in your App component.
**App.js file
**
```
import CountDown from "./CountDown";
function App() {
return (
<>
<CountDown />
</>
);
}
export default App;
```
## Build The Interface Of The Countdown Timer
Go back to your CountDown.js file, in the return statement of your component, you will render jsx content. jsx is HTML like but is actually javascript. You may also create an app.css file and import the file at the top of your page;
```
import "./app.css";
```
We will create a section for selecting and displaying the target time. In this section, we will use the date time picker of the input-type date to allow the user to select the date and time for the target time. The time selected will be displayed in a div inside this section.
Another section will be used to display the time remaining in days, hours, minutes and seconds to the target time. For these figures, we will use 0 as the placeholders for now. When we get to the functionality part, we will dynamically output the figures.
**HTML/jsx code**
```
import "./app.css";
const CountDown = () => {
return (
<>
<div className="container">
<h1>Countdown Timer</h1>
<section className="select-time">
<div>Set Countdown Target Time</div>
<input type="datetime-local"></input>
<div>Countdown Target Time</div>
<div className="time-set">0</div>
</section>
<section className="display-time">
<div className="wrapper">
<div className="time">0</div>
<div className="label">Days</div>
</div>
<div className="wrapper">
<div className="time">0</div>
<div className="label">Hours</div>
</div>
<div className="wrapper">
<div className="time">0</div>
<div className="label">Minutes</div>
</div>
<div className="wrapper">
<div className="time">0</div>
<div className="label">Seconds</div>
</div>
</section>
</div>
</>
);
};
export default CountDown;
```
you can style this page as you please.
**CSS code**
```
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
margin: 0;
font-family: "Segoe UI", "Roboto", sans-serif;
background: radial-gradient(
circle,
rgb(190, 190, 190),
rgb(117, 117, 123),
rgb(95, 126, 228)
);
background-size: 10px 10px;
display: flex;
align-items: center;
justify-content: center;
min-height: 100vh;
color: aliceblue;
}
.container {
color: rgb(255, 255, 255);
box-shadow: 2px 2px 10px black;
padding: 20px;
background: linear-gradient(
90deg,
rgb(64, 60, 82),
rgb(97, 97, 110),
rgb(126, 130, 220)
);
border-radius: 15px;
text-align: center;
}
h1 {
font-size: 3rem;
text-shadow: 1px 1px rgb(36, 32, 61), 2px 2px 4px rgb(36, 32, 61);
}
.select-time {
background: rgba(36, 38, 51, 0.645);
padding: 10px;
margin: 10px 0;
border-radius: 10px;
box-shadow: 0 0 5px black;
font-size: 1.5em;
font-weight: bold;
}
.select-time input {
padding: 5px;
font-size: 1em;
color: rgb(8, 2, 79);
background-color: rgb(199, 199, 255);
-webkit-text-stroke: 1px rgb(198, 106, 156);
}
.time-set {
color: rgb(143, 198, 202);
-webkit-text-stroke: 1px rgb(198, 106, 156);
}
.wrapper {
margin: 10px 0;
padding: 5px 0;
box-shadow: 0 0 5px black;
}
.time {
font-size: 2rem;
font-weight: 900;
-webkit-text-stroke: 2px rgb(36, 32, 61);
text-shadow: 1px 1px rgb(36, 32, 61), 2px 2px rgb(36, 32, 61);
}
```
**Appearance so far**
Now that we have set up what our app will look like, we will work on the logic/ functionality of the app.
## Adding functionality to the app
Before we go further into the JavaScript aspect, there are two dependencies that we have to import and briefly explain. We will import the useState hook and the useEffect hook from the react library.
```
import { useState, useEffect } from "react";
```
Place the code at the top of your component file.
## useState hook
When you change the value of a variable either in reaction to some event or over time, react will not re-render the new value. The useState hook is used to inform react that the value of a variable has changed. This will trigger a re-render of the component, and the changes can therefore be reflected in the new render.
To use the useState hook, you will declare a variable with two values (the name of the variable we want to make reactive, and the function for changing/setting the value of the variable.), and set it equal to the useState.
```
const [targetTime, setTargetTime] = useState();
```
This code should be written in your component function, but above the jsx template.
## Get user input from the date picker
The next thing we would do now is to use the useState hook to render the date and time that the user picks with the date picker or enters in the input tag. To do this, we will create a function and name it handleTimeSelected, this function will be an event listener to listen for changes in the value of the input tag. To make that value reactive and trigger a re-render, we will use the useState hook values. We will use setTargetTime to set the value changes for targetTime.
```
const handleTimeChange = (event) => {
setTargetTime(event.target.value);
};
```
In our jsx, we will reference the handleTimeChange function in an onChange event handler. Also, we will set the value of the input tag to be equal to targetTime.
```
<input
type="datetime-local"
value={targetTime}
onChange={handleTimeChange}
>
</input>
```
## Dynamically output the value of the user-selected time
All we need to do here is to wrap the name of the variable we intend to dynamically output in curly braces, and place it in the jsx location we want it outputted in.
```
<div className="time-set">
{targetTime}
</div>
```
This can also be used to dynamically set HTML attributes, as we did above to set the value attribute to targetTime.
As we can see, the time selected with the date and time picker is showing in another div tag below it.
**Check For Time Validity**
Another thing we would like to check for is to verify that the time chosen by the user is a future date and time. If the time selected is already in the past, we would trigger an alert to notify the user that the time selected is invalid and set targetTime to “invalid”.
Back into the handleTimeChange function.
First we need to get the current time, then compare the current time with the selected time. To get current time, we will use the JavaScript date method.
```
const currentTime = new Date();
const selectedTime = new Date(event.target.value);
```
Next, we will use a conditional statement to compare the values.
```
const handleTimeChange = (event) => {
const currentTime = new Date();
const selectedTime = new Date(event.target.value);
if (selectedTime >= currentTime) {
setTargetTime(event.target.value);
} else {
setTargetTime("Invalid Time");
alert("invalid time; please select a future date and time");
}
};
```
**Get the time remaining to the target time?**
Now we are going to get the number of days, hours, minutes and seconds between the target time and the current time. This can be derived by deducting the current time from the target time. The number we are going to get will be the total milliseconds between those two periods. To get the other time durations, we will h divide the number appropriately.
```
const getTargetTime = new Date(targetTime);
const getCountDownTime = () => {
const totalTimeLeft = getTargetTime - new Date();
const daysLeft = Math.floor(totalTimeLeft / (1000 * 60 * 60 * 24));
const hoursLeft = Math.floor((totalTimeLeft / (1000 * 60 * 60)) % 24);
const minutesLeft = Math.floor((totalTimeLeft / (1000 * 60)) % 60);
const secondsLeft = Math.floor((totalTimeLeft / 1000) % 60);
return [daysLeft, hoursLeft, minutesLeft, secondsLeft];
};
```
To get the total number of days left, we find the total milliseconds remaining, and divided the answer by 24 hours, multiplied by 60 minutes, 60 seconds and 1000 milliseconds. Then the function returned an array of the needed values.
**Dynamically display the remaining time**
Now we want to take the returned values from the getCountDownTime() function and display them appropriately in the jsx render. getCountDownTime() returns an array, in our jsx, we will display the corresponding index of the getCountDownTime() array.
```
<div className="wrapper">
<div className="time">{getCountDownTime()[0]}</div>
<div className="label">Days</div>
</div>
<div className="wrapper">
<div className="time">{getCountDownTime()[1]}</div>
<div className="label">Hours</div>
</div>
<div className="wrapper">
<div className="time">{getCountDownTime()[2]}</div>
<div className="label">Minutes</div>
</div>
<div className="wrapper">
<div className="time">{getCountDownTime()[3]}</div>
<div className="label">Seconds</div>
</div>
```
**Output**
**Set the countdown**
The next thing we are going to do is to use setInterval to decrease the remaining time every second. We also want to ensure that the timer stops counting as soon as the time left is 0 seconds and the user is notified that time is up.
If you are familiar with JavaScript you probably know how to use the setInterval method. It is used the same way in react, but before setting up the setInterval, I want us to briefly explain the useEffect hook.
## useEffect hook
The useEfect hook is used to handle function side effect in react. Function side effect in JavaScript is any effect outside the function’s local scope. If the function produces a result that is not part of the functions return value. Examples of function side effect include;
• Changing a global variable
• Interacting with the DOM
• Mutating external arrays, objects etc.
• Fetching data from external API’s
• Javascript animations
• Set timers
• Using web storage
• Etc.
React js is built on the concept of pure functions. Pure functions are functions that have no side effects. They always produce the same results if given the same inputs. This is because functions with side effects are quite unpredictable in behavior, harder to debug, test and maintain. There are also performance issues and memory leaks with regards to unnecessary re-renders or computation.
To handle functions with side effects, such as timers, api requests, updating UI etc we make use of useEffect hook.
## How to use useEffect hook
First of all, we need to;
• Import useEffect from react
• Somewhere in your component, before the return statement, call the useEffect hook with two arguments.
• The first argument is a callback function containing instructions we want to execute whenever the useEffect is triggered.
• The second optional argument is an array of dependencies that will determine when the useEffect will run. If the array is empty, the useEffect will run only once after the initial render. If the dependency argument is omitted, the useEffect will trigger whenever there is a state change. If values are provided inside the dependency array, the useEffect will be triggered only when there is a state change in any of those values.
• To avoid memory leaks and other performance issues, it is important to clean-up resources when they are no longer needed. This is usually implemented with a cleanup function.
• Syntax
```
useEffect(()=>{
// excecute side effect
//cleanup function
}, [an array of values that the effect depends on]);
```
**Back to our countdown timer**
First set up the useState for the timer that we intend to update
```
const [timer, setTimer] = useState();
```
Use the useEffect hook to execute the setIntervals
```
useEffect(() => {
const total = getTargetTime - new Date();
const countDownInterval = setInterval(() => {
if (total >= 0) {
setTimer(getCountDownTime());
} else {
clearInterval(countDownInterval);
alert(`Time up
Set New Time`);
}
}, 1000);
```
At the stage the entire code in the countdown.js page will be
```
import "./app.css";
import { useState, useEffect } from "react";
const CountDown = () => {
const [targetTime, setTargetTime] = useState();
const [timer, setTimer] = useState();
const handleTimeChange = (event) => {
const currentTime = new Date();
const selectedTime = new Date(event.target.value);
if (selectedTime >= currentTime) {
setTargetTime(event.target.value);
} else {
setTargetTime("Invalid Time");
alert("invalid time; please select a future date and time");
}
};
const getTargetTime = new Date(targetTime);
const getCountDownTime = () => {
const totalTimeLeft = getTargetTime - new Date();
const daysLeft = Math.floor(totalTimeLeft / (1000 * 60 * 60 * 24));
const hoursLeft = Math.floor((totalTimeLeft / (1000 * 60 * 60)) % 24);
const minutesLeft = Math.floor((totalTimeLeft / (1000 * 60)) % 60);
const secondsLeft = Math.floor((totalTimeLeft / 1000) % 60);
return [daysLeft, hoursLeft, minutesLeft, secondsLeft];
};
useEffect(() => {
const total = getTargetTime - new Date();
const countDownInterval = setInterval(() => {
console.log(total);
if (total >= 0) {
setTimer(getCountDownTime());
} else {
clearInterval(countDownInterval);
alert(`Time up
Set New Time`);
}
}, 1000);
return () => {
clearInterval(countDownInterval);
};
}, [timer, getTargetTime]);
return (
<>
<div className="container">
<h1>Countdown Timer</h1>
<section className="select-time">
<div>Set Countdown Target Time</div>
<input
type="datetime-local"
value={targetTime}
onChange={handleTimeChange}
></input>
<div>Countdown Target Time</div>
<div className="time-set">{targetTime}</div>
</section>
<section className="display-time">
<div className="wrapper">
<div className="time">{getCountDownTime()[0]}</div>
<div className="label">Days</div>
</div>
<div className="wrapper">
<div className="time">{getCountDownTime()[1]}</div>
<div className="label">Hours</div>
</div>
<div className="wrapper">
<div className="time">{getCountDownTime()[2]}</div>
<div className="label">Minutes</div>
</div>
<div className="wrapper">
<div className="time">{getCountDownTime()[3]}</div>
<div className="label">Seconds</div>
</div>
</section>
</div>
</>
);
};
export default CountDown;
```
**Output**
## Conclusion
In this tutorial, we have explored the fundamentals of React JS by building a practical application - a countdown timer. We have covered key concepts such as component creation, state management, event handling, and side effect management using the useState and useEffect hooks. Our countdown timer is now fully functional, and we have gained hands-on experience by building a React application from scratch.
| kemiowoyele1 | |
1,918,658 | Securing Your Website: A Comprehensive Guide for Developers and Clients | In today's digital age, the security of your website is paramount. As developers and clients alike,... | 0 | 2024-07-10T15:31:47 | https://dev.to/abdulfortech/securing-your-website-a-comprehensive-guide-for-developers-and-clients-3edg | cybersecurity, web, webdev, startup |
In today's digital age, the security of your website is paramount. As developers and clients alike, safeguarding your online presence from malicious activities is not just a necessity but a responsibility. This guide aims to provide you with actionable steps and best practices to fortify your website against threats.
**Understanding the Risks**
Before diving into security measures, it's crucial to understand the common threats your website might face:
- Cyber Attacks: From DDoS (Distributed Denial of Service) attacks to SQL injection and cross-site scripting (XSS), attackers use various methods to exploit vulnerabilities in your website’s code or infrastructure.
-
Data Breaches: Unauthorized access to sensitive user data, such as personal information or payment details, can lead to severe consequences for both users and your business’s reputation.
-
Malware and Phishing: Malicious software and phishing scams can trick users into providing confidential information or infect their devices, compromising website integrity.
**Essential Security Measures**
1.
Use Secure Hosting and Platforms
Choosing a reputable hosting provider that offers robust security features is your first line of defense. Ensure they provide:
-
SSL/TLS Encryption: Secure Sockets Layer (SSL) or Transport Layer Security (TLS) encrypts data transmitted between users and your website, preventing interception by attackers.
-
Firewall Protection: Implement a web application firewall (WAF) to filter out malicious traffic and protect against common attacks.
2. Keep Software Updated
Regularly update your website’s software components, including:
-
Content Management System (CMS): Whether using WordPress, Joomla, or others, update to the latest version to patch vulnerabilities.
-
Plugins, Dependencies and Extensions: Remove unused plugins/extensions/dependencies and keep active ones updated to minimize security risks.
3.
Implement Strong Authentication and Access Controls
-
Password Policies: Enforce strong password policies with a mix of uppercase, lowercase, numbers, and special characters. Consider implementing multi-factor authentication (MFA) for added security.
-
User Permissions: Restrict access levels based on roles and responsibilities. Limit administrative access to essential personnel only.
4. Backup and Disaster Recover
y
-
Regular Backups: Schedule automated backups of your website and database. Store backups securely offsite to restore operations quickly in case of a security breach or data loss.
-
Incident Response Plan: Develop and document an incident response plan outlining steps to contain, mitigate, and recover from security incidents effectively.
5. Educate Users and Team Members
-
Security Awareness: Educate clients, users, and team members about phishing scams, password hygiene, and safe browsing practices.
-
Training and Updates: Stay informed about the latest security threats and mitigation techniques through regular training sessions and updates.
**Ongoing Monitoring and Maintenance**
-
Security Audits : Conduct regular security audits and vulnerability assessments to identify and remediate potential weaknesses before attackers exploit them.
-
Monitor Website Activity : Use monitoring tools to track website activity, including traffic patterns and unauthorized access attempts. Set up alerts for suspicious behavior.
-
Compliance and Regulations : Adhere to industry regulations and standards (e.g., GDPR, PCI-DSS) applicable to your business. Implement measures to protect user privacy and data security.
**Conclusion**
Securing your website is not a one-time task but an ongoing commitment to protecting your digital assets and maintaining trust with users. By implementing these proactive measures and staying vigilant against emerging threats, you can significantly reduce the risk of cyber attacks and safeguard your work.
Remember, cybersecurity is everyone's responsibility. Let’s work together to create a safer digital environment for all.
| abdulfortech |
1,918,660 | Creating Cross-Account DynamoDB Backups with Terraform | In my previous post, Creating Secure Backups for DynamoDB Tables with Terraform, I discussed how to... | 0 | 2024-07-10T15:13:21 | https://dev.to/sepiyush/creating-cross-account-dynamodb-backups-with-terraform-e61 | terraform, aws, dynamodb, security | In my previous post, [Creating Secure Backups for DynamoDB Tables with Terraform](https://dev.to/sepiyush/creating-secure-backups-for-dynamodb-tables-with-terraform-4002), I discussed how to create DynamoDB table backups within the same AWS account. In this post, I will explain how to create cross-account DynamoDB backups, where the tables are in one AWS account and the backups are created in another AWS account for enhanced security and limited access.
### Steps to Configure Cross-Account Backups
To achieve cross-account DynamoDB backups, follow these steps:
### Step 1: Create Destination Vault in Backup Account
First, set up the backup vault in the AWS account where you want to store the backups. This includes configuring a KMS key for encryption and setting up the vault policy to allow cross-account access.
```hcl
resource "aws_backup_vault" "destination_backup_vault" {
name = "destination-backup-vault"
kms_key_arn = aws_kms_key.backup_vault_key.arn
}
resource "aws_kms_key" "backup_vault_key" {
description = "KMS key for backup vault encryption"
enable_key_rotation = true
}
resource "aws_backup_vault_policy" "destination_backup_vault_policy" {
backup_vault_name = aws_backup_vault.destination_backup_vault.name
policy = jsonencode({
Version = "2012-10-17",
Statement = [
{
Sid : "AllowCrossAccountAccess",
Effect = "Allow",
Principal = {
AWS = "arn:aws:iam::[YOUR SOURCE ACCOUNT ID]:root"
},
Action = [
"backup:CopyIntoBackupVault"
],
Resource = "*"
}
]
})
}
```
### Step 2: Create Source Vault in Source Account
Next, create the backup vault in the source account where the DynamoDB tables reside.
```hcl
resource "aws_backup_vault" "source_backup_vault" {
name = "source-backup-vault"
kms_key_arn = aws_kms_key.backup_vault_key.arn
}
resource "aws_kms_key" "backup_vault_key" {
description = "KMS Key for Backup"
enable_key_rotation = true
}
```
### Step 3: Create IAM Role with Relevant Permissions
Create an IAM role in the source account with the necessary permissions to perform backups, including the `AWSBackupServiceRolePolicyForBackup` policy.
```hcl
data "aws_iam_policy_document" "assume_role" {
statement {
effect = "Allow"
principals {
type = "Service"
identifiers = ["backup.amazonaws.com"]
}
actions = ["sts:AssumeRole"]
}
}
resource "aws_iam_role" "source_backup_role" {
name = "source-backup-role"
assume_role_policy = data.aws_iam_policy_document.assume_role.json
inline_policy {
name = "backup-policy"
policy = jsonencode({
Version = "2012-10-17",
Statement = [
{
Effect = "Allow",
Action = [
"dynamodb:CreateBackup",
"dynamodb:DeleteBackup",
"dynamodb:DescribeBackup",
"dynamodb:ListBackups",
"dynamodb:ListTables",
"dynamodb:RestoreTableFromBackup",
"dynamodb:ListTagsOfResource",
"dynamodb:StartAwsBackupJob",
"dynamodb:RestoreTableFromAwsBackup"
],
Resource = "*"
},
{
Effect = "Allow",
Action = [
"backup:StartBackupJob",
"backup:StopBackupJob",
"backup:TagResource",
"backup:UntagResource"
],
Resource = "*"
}
]
})
}
}
resource "aws_iam_role_policy_attachment" "service_backup_policy" {
policy_arn = "arn:aws:iam::aws:policy/service-role/AWSBackupServiceRolePolicyForBackup"
role = aws_iam_role.source_backup_role.name
}
```
### Step 4: Create a Backup Plan
Configure a backup plan to periodically back up the DynamoDB tables and copy them to the destination vault.
```hcl
resource "aws_backup_plan" "cross_account_cross_region_copy" {
name = "cross-account-cross-region-copy"
rule {
rule_name = "copy-to-destination"
target_vault_name = aws_backup_vault.source_backup_vault.name
schedule = "cron(38 13 * * ? *)"
copy_action {
destination_vault_arn = var.destination_backup_vault_arn
lifecycle {
delete_after = 30 # Retain for 30 days
}
}
}
}
resource "aws_backup_selection" "dynamodb_cross_account_copy_selection" {
plan_id = aws_backup_plan.cross_account_cross_region_copy.id
name = "copy-backup-selection"
iam_role_arn = aws_iam_role.source_backup_role.arn
resources = [
//table arns
]
}
resource "aws_backup_vault_policy" "source_backup_vault_policy" {
backup_vault_name = aws_backup_vault.source_backup_vault.name
policy = jsonencode({
Version = "2012-10-17",
Statement = [
{
Sid : "AllowCrossAccountAccess",
Effect = "Allow",
Principal = {
AWS = "arn:aws:iam::[YOUR BACKUP ACCOUNT ID]:root"
},
Action = [
"backup:CopyFromBackupVault",
"backup:CopyIntoBackupVault"
],
Resource = "*"
}
]
})
}
```
So your complete destination terraform file would look something like this
```hcl
resource "aws_backup_vault" "source_backup_vault" {
name = "source-backup-vault"
kms_key_arn = aws_kms_key.backup_vault_key.arn
}
resource "aws_kms_key" "backup_vault_key" {
description = "KMS Key for Backup"
enable_key_rotation = true
}
resource "aws_backup_vault_policy" "source_backup_vault_policy" {
backup_vault_name = aws_backup_vault.source_backup_vault.name
policy = jsonencode({
Version = "2012-10-17",
Statement = [
{
Sid : "AllowCrossAccountAccess",
Effect = "Allow",
Principal = {
AWS = "arn:aws:iam::[YOUR BACKUP ACCOUNT ID]:root"
},
Action = [
"backup:CopyFromBackupVault",
"backup:CopyIntoBackupVault"
],
Resource = "*"
}
]
})
}
data "aws_iam_policy_document" "assume_role" {
statement {
effect = "Allow"
principals {
type = "Service"
identifiers = ["backup.amazonaws.com"]
}
actions = ["sts:AssumeRole"]
}
}
resource "aws_iam_role" "source_backup_role" {
name = "source-backup-role"
assume_role_policy = data.aws_iam_policy_document.assume_role.json
inline_policy {
name = "backup-policy"
policy = jsonencode({
Version = "2012-10-17",
Statement = [
{
Effect = "Allow",
Action = [
"dynamodb:CreateBackup",
"dynamodb:DeleteBackup",
"dynamodb:DescribeBackup",
"dynamodb:ListBackups",
"dynamodb:ListTables",
"dynamodb:RestoreTableFromBackup",
"dynamodb:ListTagsOfResource",
"dynamodb:StartAwsBackupJob",
"dynamodb:RestoreTableFromAwsBackup"
],
Resource = "*"
},
{
Effect = "Allow",
Action = [
"backup:StartBackupJob",
"backup:StopBackupJob",
"backup:TagResource",
"backup:UntagResource"
],
Resource = "*"
}
]
})
}
}
resource "aws_iam_role_policy_attachment" "service_backup_policy" {
policy_arn = "arn:aws:iam::aws:policy/service-role/AWSBackupServiceRolePolicyForBackup"
role = aws_iam_role.source_backup_role.name
}
resource "aws_backup_plan" "cross_account_cross_region_copy" {
name = "cross-account-cross-region-copy"
rule {
rule_name = "copy-to-destination"
target_vault_name = aws_backup_vault.source_backup_vault.name
schedule = "cron(38 13 * * ? *)"
copy_action {
destination_vault_arn = var.destination_backup_vault_arn
lifecycle {
delete_after = 30 # Retain for 30 days
}
}
}
}
resource "aws_backup_selection" "dynamodb_cross_account_copy_selection" {
plan_id = aws_backup_plan.cross_account_cross_region_copy.id
name = "copy-backup-selection"
iam_role_arn = aws_iam_role.source_backup_role.arn
resources = [
//table arns
]
}
```
### Understanding the Cron Schedule
The `schedule` parameter in the backup plan uses a cron expression to determine when the backup should run. Here is an explanation of the cron expression used in this configuration:
```hcl
schedule = "cron(38 13 * * ? *)"
```
- **38**: Minute (38th minute of the hour).
- **13**: Hour (1 PM UTC).
- **\***: Day of the month (any day).
- **\***: Month (any month).
- **?**: Day of the week (any day of the week).
- **\***: Year (optional, any year).
This configuration schedules the backup job to run daily at 1:38 PM UTC.
### Conclusion
Creating cross-account backups for DynamoDB tables enhances the security and availability of your data. By following the steps outlined in this guide, you can use Terraform to automate the process of setting up secure backups across different AWS accounts. This approach ensures that your backups are stored securely in a separate account, providing an additional layer of protection against data loss or unauthorized access.
If you have any suggestions or improvements, please feel free to comment. Happy Terraforming! | sepiyush |
1,918,661 | How to Implement Sentiment Analysis with PHP and AWS Comprehend | Hi everyone, 👋 Imagine you implement a chatbot that analyzes in real-time how a conversation is... | 0 | 2024-07-10T18:58:45 | https://dev.to/guilherme-lauxen/how-to-implement-sentiment-analysis-with-php-and-aws-comprehend-2ibk | machinelearning, php, aws, programming | Hi everyone, 👋
Imagine you implement a chatbot that analyzes in real-time how a conversation is going. Is the client happy 😄 or sad 😔 about the situation? Cool, isn’t it? Or imagine analyzing an email from a client and quantifying it in your indicators to see which one needs more attention.
In this post, I’d like to share how to implement a powerful tool to analyze texts, called AWS Comprehend.
**Important to know:**
Amazon Comprehend Free Tier allows up to 50,000 character units per month for the first 12 months. After that, you need to check the prices on the AWS platform.
Hands-on 💪
## 1. Create user in AWS.
* Go to [AWS Management Console](https://aws.amazon.com/pt/console/) and create your login.
* Search for IAM.
* Click on Users -> Create User
* Specify a name (whatever you want) for the user and click on Next
* Set permissions for the user.
For our tests, we’re going to use just one policy (ComprehendFullAccess), but for your project, you can define more policies as needed.
* Now it’s time to review and create the user.
* After creating the user, it’s time to create an Access Key. Click on the user that has been created, and in Summary, click on Create access key.
* Select Local code for the use case (for our tutorial it’s fine).
* Set a description tag. I like to use the name of the case example: local-code-access-key, but you can use any name.
* After creating, you can show the access_key and secret_key on the screen or download a CSV with credentials. Save this because we’re going to use it to connect with AWS.
## 2. Install the AWS SDK for PHP.
* Use Composer to install the AWS SDK for PHP library.
`composer require aws/aws-sdk-php`
## 3. Implementing code
* This is an example of how you can implement sentiment analysis. Create a file named analyze_sentiment.php and copy this code.
```
<?php
require 'vendor/autoload.php';
// Using the AWS Comprehend library
use Aws\Comprehend\ComprehendClient;
// Configuring the client
$client = new ComprehendClient([
'version' => 'latest',
'region' => 'us-east-1', // Use your preferred region
'credentials' => [
'key' => 'PASTE_YOUR_ACCESS_KEY',
'secret' => 'PASTE_YOUR_SECRET_ACCESS_KEY',
]
]);
// Text to analyze
$textToAnalyze = 'Thanks for resolving my problem, but it was too late.';
// Using the method detectSentiment to analyze
$result = $client->detectSentiment([
'Text' => $textToAnalyze,
'LanguageCode' => 'en'
]);
// Result of analysis
echo 'Text: ' . $textToAnalyze;
echo '<br>Sentiment: ' . $result['Sentiment'];
echo '<pre>';
print_r($result['SentimentScore']);
echo '</pre>';
?>
```
## The result looks like this.
This is an example of how you can implement this in your applications. You can use most methods in this library to analyze images, files, and more. Just check the [AWS Comprehend Documentation](https://docs.aws.amazon.com/comprehend/latest/dg/what-is.html)
Hope this is useful for you. 👊
See you soon. | guilherme-lauxen |
1,918,662 | unlock the power of 2 in 1 business | Here's a detailed article description on “How to Make Money Online”: Title: “Mastering the Art of... | 0 | 2024-07-10T15:19:59 | https://dev.to/joseph_agency_7b7208bbf5f/unlock-the-power-of-2-in-1-business-5cjh | onlinebusiness | Here's a detailed article description on “How to Make Money Online”:
Title: “[Mastering ](https://legenddiamondgeneration.com/)the Art of Online Earning: A Comprehensive Guide”
Description: “Are you tired of the 9-to-5 grind and seeking a more flexible and lucrative career path? Look no further! This article will delve into the world of online earning, providing you with a step-by-step guide on how to make money online.
From freelancing and affiliate marketing to selling products and creating online courses, we'll explore the top ways to monetize your skills and interests. You'll learn how to:
- Identify your strengths and passions
- Choose the right online platforms and tools
- Build a professional online presence
- Develop a marketing strategy
- Scale your online business
Whether you're a beginner or an experienced entrepreneur, this article will provide you with the knowledge and inspiration to succeed in the [online ](https://legenddiamondgeneration.com/)world. So, let's get started on your journey to financial freedom!” | joseph_agency_7b7208bbf5f |
1,918,748 | logspace() in PyTorch | *My post explains arange() and linspace(). logspace() can create the 1D tensor of the zero or more... | 0 | 2024-07-10T15:24:30 | https://dev.to/hyperkai/logspace-in-pytorch-3dom | pytorch, logspace, tensor, function | *[My post](https://dev.to/hyperkai/arange-and-linspace-in-pytorch-3ak7) explains [arange()](https://pytorch.org/docs/stable/generated/torch.arange.html) and [linspace()](https://pytorch.org/docs/stable/generated/torch.linspace.html).
[logspace()](https://pytorch.org/docs/stable/generated/torch.logspace.html) can create the 1D tensor of the zero or more integers, floating-point numbers or complex numbers evenly spaced between <code>base<sup>start</sup></code> and <code>base<sup>end</sup></code>(<code>base<sup>start</sup></code><=x<=<code>base<sup>end</sup></code>) as shown below:
*Memos:
- `logspace()` can be used with [torch](https://pytorch.org/docs/stable/torch.html) but not with a tensor.
- The 1st argument with `torch` is `start`(Required-Type:`int`, `float`, `complex` or `bool`). *The 0D tensor of `int`, `float`, `complex` or `bool` also works.
- The 2nd argument with `torch` is `end`(Required-Type:`int`, `float`, `complex` or `bool`). *The 0D tensor of `int`, `float`, `complex` or `bool` also works.
- The 3rd argument with `torch` is `steps`(Required-Type:`int`):
*Memos:
- It must be greater than or equal to 0.
- The 0D tensor of `int` also works.
- The 4th argument with `torch` is `base`(Optional-Default:`10.0`-Type:`int`, `float` or `bool`). *The 0D tensor of `int`, `float`, `complex` or `bool` also works.
- There is `dtype` argument with `torch`(Optional-Type:[dtype](https://pytorch.org/docs/stable/tensor_attributes.html#torch.dtype)):
*Memos:
- If `dtype` is not given, `dtype` is inferred from `start`, `end` or `step` or `dtype` of [set_default_dtype()](https://pytorch.org/docs/stable/generated/torch.set_default_dtype.html) is used for floating-point numbers.
- Setting `start` and `end` of integer type is not enough to create the 1D tensor of integer type so integer type with `dtype` must be set.
- `dtype=` must be used.
- [My post](https://dev.to/hyperkai/set-dtype-with-dtype-argument-functions-and-get-it-in-pytorch-13h2) explains `dtype` argument.
- There is `device` argument with `torch`(Optional-Type:`str`, `int` or [device()](https://pytorch.org/docs/stable/tensor_attributes.html#torch.device)):
*Memos:
- `device=` must be used.
- [My post](https://dev.to/hyperkai/set-device-with-device-argument-functions-and-get-it-in-pytorch-1o2p) explains `device` argument.
- There is `requires_grad` argument with `torch`(Optional-Type:`bool`):
*Memos:
- `requires_grad=` must be used.
- [My post](https://dev.to/hyperkai/set-requiresgrad-with-requiresgrad-argument-functions-and-get-it-in-pytorch-39c3) explains `requires_grad` argument.
- There is `out` argument with `torch`(Optional-Type:`tensor`):
*Memos:
- `out=` must be used.
- [My post](https://dev.to/hyperkai/set-out-with-out-argument-functions-pytorch-3ee) explains `out` argument.
```python
import torch
torch.logspace(start=10., end=20., steps=0)
torch.logspace(start=10., end=20., steps=0, base=10.)
torch.logspace(start=20., end=10., steps=0)
torch.logspace(start=20., end=10., steps=0, base=10.)
# tensor([])
torch.logspace(start=10., end=20., steps=1)
torch.logspace(start=10., end=20., steps=1, base=10.)
# tensor([1.0000e+10])
torch.logspace(start=20., end=10., steps=1)
torch.logspace(start=20., end=10., steps=1, base=10.)
# tensor([1.0000e+20])
torch.logspace(start=10., end=20., steps=2)
torch.logspace(start=10., end=20., steps=2, base=10.)
# tensor([1.0000e+10, 1.0000e+20])
torch.logspace(start=20., end=10., steps=2)
torch.logspace(start=20., end=10., steps=2, base=10.)
# tensor([1.0000e+20, 1.0000e+10])
torch.logspace(start=10., end=20., steps=3)
torch.logspace(start=10., end=20., steps=3, base=10.)
# tensor([1.0000e+10, 1.0000e+15, 1.0000e+20])
torch.logspace(start=20., end=10., steps=3)
torch.logspace(start=20., end=10., steps=3, base=10.)
# tensor([1.0000e+20, 1.0000e+15, 1.0000e+10])
torch.logspace(start=10., end=20., steps=4)
torch.logspace(start=10., end=20., steps=4, base=10.)
# tensor([1.0000e+10, 2.1544e+13, 4.6416e+16, 1.0000e+20])
torch.logspace(start=20., end=10., steps=4)
torch.logspace(start=20., end=10., steps=4, base=10.)
# tensor([1.0000e+20, 4.6416e+16, 2.1544e+13, 1.0000e+10])
torch.logspace(start=10., end=20., steps=4, base=100.)
# tensor([1.0000e+20, 4.6416e+26, 2.1544e+33, inf])
torch.logspace(start=20., end=10., steps=4, base=100.)
# tensor([inf, 2.1544e+33, 4.6416e+26, 1.0000e+20])
torch.logspace(start=10, end=20, steps=4, base=10, dtype=torch.int64)
torch.logspace(start=torch.tensor(10),
end=torch.tensor(20),
steps=torch.tensor(4),
base=torch.tensor(10),
dtype=torch.int64)
# tensor([10000000000,
# 21544346900318,
# 46415888336127912,
# -9223372036854775808])
torch.logspace(start=10.+6.j, end=20.+3.j, steps=4)
torch.logspace(start=torch.tensor(10.+6.j),
end=torch.tensor(20.+3.j),
steps=torch.tensor(4),
base=torch.tensor(10.+0.j))
# tensor([3.1614e+09+9.4871e+09j,
# 1.0655e+13-1.8725e+13j,
# -4.5353e+16+9.8772e+15j,
# 8.1122e+19+5.8475e+19j])
torch.logspace(start=False, end=True, steps=4, base=False)
torch.logspace(start=torch.tensor(False),
end=torch.tensor(True),
steps=torch.tensor(4),
base=torch.tensor(False))
# tensor([1., 0., 0., 0.])
``` | hyperkai |
1,918,749 | Mastering Game Development: A Comprehensive Collection of Free Online Tutorials 🎮 | The article is about a curated collection of free online tutorials for aspiring game developers. It covers a wide range of topics, including a comprehensive course on game development from Harvard's CS50, a primer on 3D math for graphics and game design, a step-by-step guide to building a 2D game engine in Java, an introduction to 3D game shaders, and a tutorial on creating a classic Tetris game in C++. The article provides an overview of each tutorial, highlighting the key concepts and skills covered, and includes direct links to the resources, making it a valuable resource for anyone interested in mastering the art of game development. | 27,985 | 2024-07-10T15:24:38 | https://dev.to/getvm/mastering-game-development-a-comprehensive-collection-of-free-online-tutorials-lo2 | getvm, programming, freetutorial, collection |
Dive into the captivating world of game development with this curated collection of free online tutorials! Whether you're a seasoned programmer or a curious beginner, these resources will equip you with the essential skills and knowledge to create your own thrilling games. From foundational 3D math concepts to coding a complete 2D game engine, this lineup covers a wide range of topics to cater to every aspiring game developer's needs.
## CS50's Games Track: Comprehensive Course on Game Development 🎓
Get ready to embark on a comprehensive journey through the world of game development with [CS50's Games Track](https://getvm.io/tutorials/cs50-2019-games-track). Taught by the renowned David J. Malan, this course delves into the programming, design, and implementation aspects of game development, providing you with a solid foundation to build your own games.
## 3D Math Primer for Graphics and Game Development 📚
Unlock the secrets of 3D mathematics with the [3D Math Primer for Graphics and Game Development](https://getvm.io/tutorials/3d-math-primer-for-graphics-and-game-development) tutorial. This comprehensive introduction covers essential concepts such as vectors, matrices, and 3D geometry, making it a must-read for programmers, designers, and technical artists alike.
## Coding a 2D Game Engine from Scratch in Java 🖥️
Dive into the world of game engine development with the [Code a 2D Game Engine using Java - Full Course for Beginners](https://getvm.io/tutorials/code-a-2d-game-engine-using-java-full-course-for-beginners) tutorial. Learn how to build a complete 2D game engine from the ground up using Java, even if you're a beginner with no prior game development experience.
## Mastering 3D Game Shaders 🎨
Elevate your 3D game development skills with the [3D Game Shaders For Beginners](https://getvm.io/tutorials/3d-game-shaders-for-beginners) tutorial. Dive into the world of shaders and learn how to create stunning visual effects, including texturing, lighting, and normal mapping, using Panda3D and GLSL.
## Building a Classic Tetris Game in C++ 🧠
Embrace your inner game developer and learn how to create a platform-independent Tetris game in C++ with the [Tetris tutorial in C++ platform independent focused in game logic for beginners](https://getvm.io/tutorials/tetris-tutorial-in-c-platform-independent-focused-in-game-logic-for-beginners) tutorial. Focusing on game logic and development, this resource is perfect for beginners looking to expand their C++ skills.
Embark on your game development journey with this comprehensive collection of free online tutorials. Whether you're interested in 3D math, shader programming, or building a classic game from scratch, these resources have you covered. Happy coding! 🎉
## Unleash Your Coding Potential with GetVM Playgrounds 🚀
Elevate your game development journey by pairing these incredible tutorials with the power of GetVM Playgrounds. GetVM is a Google Chrome browser extension that provides an online coding environment, allowing you to seamlessly put the concepts you learn into practice.
With GetVM Playgrounds, you can dive right into the code, experiment with different techniques, and see the results in real-time, all without the hassle of setting up a local development environment. Whether you're tackling 3D math, crafting a 2D game engine, or coding a classic Tetris game, the GetVM Playgrounds offer a frictionless way to bring your ideas to life.
Unlock the true potential of these tutorials by coupling them with the interactive, hands-on learning experience of GetVM Playgrounds. Elevate your game development skills and bring your creations to life with the power of GetVM. 🎮
---
## Want to Learn More?
- 📖 Explore More [Free Resources on GetVM](https://getvm.io/explore)
- 💬 Join our [Discord](https://discord.gg/XxKAAFWVNu) or tweet us [@GetVM](https://x.com/getvmio) 😄 | getvm |
1,918,752 | Boost Your Laravel App's Performance: Essential Architecture Strategies | In today's fast-paced web world, application speed is king. Slow loading times frustrate users and... | 0 | 2024-07-10T15:29:10 | https://dev.to/marufhossain/boost-your-laravel-apps-performance-essential-architecture-strategies-mp6 | In today's fast-paced web world, application speed is king. Slow loading times frustrate users and hurt your bottom line. Laravel, a popular PHP framework, offers a powerful toolkit for building dynamic web applications. But even the best framework needs a well-designed architecture to truly shine. Here, we'll explore essential [Laravel architecture](https://www.clickittech.com/aws/laravel-aws-hosting/?utm_source=backlinks&utm_medium=referral
) strategies to keep your app running smoothly and users happy.
### Core Performance Pillars
There are three core areas to consider when optimizing your Laravel app's performance:
* **Database:** A slow database can bring your entire application to a crawl. Efficient database interaction is crucial. Think of your database like a well-organized library. Indexing helps find information quickly, and smart queries minimize unnecessary searches. If your app needs to handle a lot of traffic, consider scaling your database to handle the load.
* **Caching:** Imagine a busy restaurant keeping popular dishes pre-made to serve customers faster. Caching works similarly. It stores frequently accessed data in memory, reducing the need for constant database queries and speeding up response times. Laravel provides built-in caching functionality for various purposes, like application data or API responses. Remember, fresh data is important, so implement strategies to clear the cache when necessary.
* **Code Optimization:** Clean, efficient code is like a well-oiled machine. Use code profiling tools to identify areas that slow things down. Maybe you have a loop that can be simplified, or a query that needs an index. By keeping your code lean and mean, you'll see a noticeable performance boost.
### Putting Strategies into Action with Laravel
Now, let's dive into specific techniques you can use within your Laravel architecture:
* **Eloquent with Eager Loading:** Imagine fetching information about a user and needing details about their posts. Without eager loading, you might make two separate database calls: one for the user and another for their posts. Eager loading with Eloquent relationships lets you grab all this data in one go, saving precious time.
* **Crafting Efficient Database Queries:** Poorly written database queries can be a major performance bottleneck. Use indexes to speed up searches, avoid making multiple queries for related data (N+1 queries), and leverage Laravel's query builder for clean and efficient database interactions. Think of crafting clear and concise instructions for your database to find the information you need quickly.
* **Caching with Laravel Cache:** Laravel's built-in caching system allows you to store frequently accessed data in memory for faster retrieval. Imagine caching product details displayed on your homepage. This way, users don't have to wait for the database every time they visit the page. Remember to keep your cached data fresh by implementing cache invalidation strategies.
### Building for the Future
When designing your Laravel application, consider its potential growth. A well-structured, modular architecture makes it easier to scale your application as your user base grows. Techniques like load balancing can distribute traffic across multiple servers, and a microservices architecture can break down your application into smaller, independent services that can be scaled individually.
### Server Power
Your server configuration also plays a role in application performance. Optimize your PHP settings, consider using a caching server like Redis, and choose a hosting environment that can handle your application's needs. Think of your server as the engine that runs your application; make sure it's powerful and tuned for optimal performance.
### Monitoring and Measuring
Performance optimization is an ongoing process. Use tools like Blackfire or Xdebug to profile your code and identify performance bottlenecks. Laravel Telescope provides valuable insights into your application's performance, helping you pinpoint areas for improvement. By constantly measuring and monitoring, you can ensure your Laravel app stays fast and responsive for your users.
### Conclusion
By following these essential architecture strategies, you can significantly improve your Laravel application's performance. Remember, a well-optimized Laravel architecture is a key ingredient for a successful web application that keeps users engaged and coming back for more.
| marufhossain | |
1,918,753 | Authenticating a Spring Boot Application with Active Directory | Authentication with Active Directory in a Spring Boot application is straightforward and requires... | 0 | 2024-07-10T15:35:59 | https://dev.to/alkarid/authenticating-a-spring-boot-application-with-active-directory-5d30 | Authentication with Active Directory in a Spring Boot application is straightforward and requires minimal setup. You don't need to install an embedded server for testing connectivity or additional complex packages. In fact, the process is streamlined with just a couple of dependencies and a simple configuration.
**Dependencies**
First, ensure you have the necessary dependencies in your `pom.xml` or build.gradle:
```
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-ldap</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-ldap</artifactId>
</dependency>
```
**Configuration**
Next, configure your Spring Security in a `WebSecurityConfig` class:
```java
@EnableWebSecurity
public class WebSecurityConfig{
@Bean
SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
http
.authorizeHttpRequests((authorize) -> authorize.anyRequest().fullyAuthenticated())
.formLogin(Customizer.withDefaults());
return http.build();
@Bean
public ActiveDirectoryLdapAuthenticationProvider authenticationProvider() {
return new ActiveDirectoryLdapAuthenticationProvider("domain.com", "ldap://ip-addr");
}
}
```
And that's it, happy securing 😎 !! | alkarid | |
1,918,754 | JavaScript values vs reference | Understand how variables are held in JavaScript: As values or references In JavaScript, or... | 0 | 2024-07-10T15:32:08 | https://dev.to/js_cipher/javascript-values-vs-reference-1ao5 | webdev, javascript, programming, learning | ## Understand how variables are held in JavaScript: As values or references
In JavaScript, or rather programming, a variable is a location in the memory of a computer used to store data. Variables are declared (given a name, an identifier) and could be assigned a value immediately or later, depending on the language. This variable can then be referred to later in the program rather than explicitly stating the same value over again.
In JavaScript, data is passed around in form of values, these values could be either primitive or object values. As a JavaScript developer, understanding how JavaScript handles data is crucial to having strong basics in the language.
Primitive values include:
- strings.
- numbers.
- booleans.
- BigInt.
- Symbol.
- Undefined.
Object values on the other hand are:
- arrays.
- functions.
- objects.
These value types behave differently when they are passed around, consider the snippet below:
`var myName = "Fred";
var otherName = myName;
myName = "Ashley";
console.log(myName); //Ashley
console.log(otherName); //Fred
`
Notice that `otherName` remained the same even though it seems like a "copy" of `myName`. In reality, what actually happened is that when `otherName` was assigned `myName`, it was not assigned as a copy of the string "Fred", rather, a new string "Fred" was created. Thus, there is no direct link between `myName` and `otherName`. This is how JavaScript passes primitive values around.
Object values are handled differently, take a look at the snippet below:
`var myObj = {color: "red"};
var otherObj = myObj;
myObj.color = "blue";
console.log(myObj.color); //blue
console.log(otherObj.color); //blue`
Here, and object was created and assigned to `myObj`, which was then assigned to `otherObj`, see how `otherObj` and `myObj` `color` properties were both changed just by changing the `color` property of `myObj`. This is because object values are passed around as references. `myObj` doesn't directly refer to the object, it points to its reference instead, `otherObj` is then assigned `myObj` which is a reference to the real object. Hence, both variables are linked to the same object because they point to the same reference, a change in one affects the other.
This is why comparison (`===`) of two objects directly returns `false`, you are literally comparing two different references. Here, `myObj === otherObj ` returns `true` because we are comparing the same references.
I hope this gives you a fresh perspective of how JavaScript works behind the scenes.
Till then, stay bug-free. | js_cipher |
1,918,755 | Mein Rat ist, sich an legale und hochwertige Sportprodukte | Mein Rat ist, sich an legale und hochwertige Sportprodukte zu halten, die von vertrauenswürdigen... | 0 | 2024-07-10T15:32:11 | https://dev.to/oscar82/mein-rat-ist-sich-an-legale-und-hochwertige-sportprodukte-257g | Mein Rat ist, sich an legale und hochwertige Sportprodukte zu halten, die von vertrauenswürdigen Anbietern bezogen werden können. Eine Option wäre, hochwertige Nahrungsergänzungsmittel zu suchen, die Ihre Fitnessziele unterstützen. Eine vertrauenswürdige Quelle für legale Produkte ist die Website, wo Sie Oxandrolon kaufen können. Dort finden Sie eine Auswahl an Produkten, die Ihnen bei Ihrem Fitnessziel helfen können. Denken Sie daran, dass Ihre Gesundheit und Sicherheit oberste Priorität haben sollten [oxandrolon erfahrungen](https://dinespower.com/oral-de/anavamed-10-oral-steroid-in-tablets-de). Wenn Sie weitere Fragen haben oder Hilfe bei der Auswahl von Produkten benötigen, empfehle ich Ihnen, sich an einen qualifizierten Arzt oder Ernährungsberater zu wenden.
| oscar82 | |
1,918,756 | Introduction pratique aux tests d'applications Web avec Selenium WebDriver et Java. | Salut à tous, Aujourd'hui, je veux partager avec vous une introduction pratique aux tests... | 0 | 2024-07-10T15:46:02 | https://dev.to/laroseikitama/introduction-pratique-aux-tests-dapplications-web-avec-selenium-webdriver-et-java-23ml | webdev, java, selenium, testing | Salut à tous,
Aujourd'hui, je veux partager avec vous une introduction pratique aux tests d'applications Web avec Selenium WebDriver. Nous allons voir ensemble comment écrire un script de test simple en Java, en utilisant deux mini-projets que j'ai récemment réalisés.
## Préparation de l'environnement
Avant de commencer à écrire notre script de test, nous devons préparer notre environnement de développement. Voici ce dont nous avons besoin:
1. **Java JDK :** Assurez-vous d'avoir installé Java Development Kit(JDK).
2. **IntelliJ IDEA :** Nous utiliserons IntelliJ IDEA comme IDE.
3.**Selenium WebDriver :** Nous ajouterons les librairies dans le projet.
4. **Google chrome :** Nous utiliserons le navigateur Google Chrome.
5. ChromeDriver : Nous aurons besoins de télécharger le driver de chrome compatible avec votre version de Google Chrome.
## Installation de Selenium WebDriver
### Etape 1 : Télécharger Selenium WebDriver pour Java.
1. Aller sur le site officielle de Selenium WebDriver en cliquant sur ce lien [https://www.selenium.dev/downloads/](https://www.selenium.dev/downloads/).
2. Faites défiler jusqu'à la section `Selenium Clients and WebDriver Language Bindings` et téléchargez le client `Selenium WebDriver Java`. Le téléchargement est un fichier ZIP contenant des bibliothèques et des pilotes Selenium Java.
3. Aller sur le site [https://sites.google.com/chromium.org/driver/downloads](https://sites.google.com/chromium.org/driver/downloads), lisez le contenu pour savoir quelle version de `chromeDriver` télécharger en fonction de la version de votre navigateur Google Chrome.
- **Comment connaître sa version Google Chrome ? :** Dans la barre d'URL de votre navigateur Google Chrome, tapez ceci : `chrome://version`.
4. Créer un nouveau projet Java avec Maven dans IntelliJ IDEA, dans notre cas nous l'appellerons `SeleniumTestLogiciels`.
## Etape 2 : Ajouter les librairies Selenium dans le projet.
1. Extrayez le fichier ZIP téléchargé dans un dossier sur votre ordinateur.
2. Dans IntelliJ IDEA, cliquer sur File > Project Structure.
3. Dans la fenêtre Project Structure, cliquer sur `Libraries`.
4. Dans fenêtre `Libraries`, à droite cliquer sur l'icone `+` pour (New Project Library), choisissez ensuite `Java`.
5. Dans la fenêtre Select `Library Files`, accédez au dossier où vous avez extrait Selenium WebDriver et sélectionnez tous les fichiers qui s'y trouvent.
- **Astuce de sélection rapide :** Cliquez sur le premier élément dans le dossier, maintenez enfoncée la touche `shift`, puis sans lâcher la touche utiliser la souris pour vous placer au bas de la liste et cliquez sur le dernier élément et voila :).
6. Cliquez sur `Apply`, puis sur `Close`.
## Vérifier l'installation
Créons un script de test simple pour vérifier que Selenium WebDriver a été bien installé correctement.
1. Créez une nouvelle classe nommée `NewsletterSignUpTest`
2. Dans le fichier de classe nouvellement crée, écrivez un simple test Selenium WebDriver. Voici un exemple de script qui ouvre l'un de mes projets frontend dans un navigateur Web.
``` java
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
public class NewsletterSignUpTest {
public static void main(String[] args) throws InterruptedException {
// Setup WebDriver
System.setProperty("webdriver.chrome.driver","C:\\Selenium WebDriver Chrome\\chromedriver-win64\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
// Navigate to the page
driver.get("https://time-tracking-dashboard-challenge-sooty.vercel.app/");
// Maximize the browser window
driver.manage().window().fullscreen();
// Wait for 4 seconds before closing the browser
Thread.sleep(6000);
//close the browser
driver.quit();
}
}
```
- **Remarque :** Dans le script ci-dessus, remplacez `C:\\Selenium WebDriver Chrome\\chromedriver-win64\\chromedriver.exe` par le chemin d'accès à l'exécutable ChromeDriver de votre machine.
3. Exécutez le script de test
- **Remarque :** Si tout est bien configuré correctement, ce script devrait ouvrir une page Web dans le navigateur Chrome, puis la fermer.
## Écrivons le script de test pour le site Web `NewsletterSignUp`
- **Lien du dépôt GitHub :** [NewsletterSignUp_Repository](https://github.com/ikitamalarose/newsletter-sign-up-with-success-message-challenge.git)
**Ci-dessous le code de la classe `NewsletterSignUpTest` précédemment créée :**
```java
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import java.util.logging.Level;
import java.util.logging.Logger;
public class NewsletterSignUpTest {
public static void main(String[] args){
// Initialize logger for logging test results
final Logger LOGGER = Logger.getLogger(NewsletterSignUpTest.class.getName());
// Setup WebDriver
System.setProperty("webdriver.chrome.driver","C:\\Selenium WebDriver Chrome\\chromedriver-win64\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
try {
// Navigate to the page
driver.get("https://newsletter-sign-up-with-success-message-challenge-tau.vercel.app/");
// Maximize the browser window
driver.manage().window().fullscreen();
// Wait for 5 seconds to observe the initial state
Thread.sleep(5000);
// Find the email input field and submit button
WebElement emailInput = driver.findElement(By.id("email"));
WebElement submitButton = driver.findElement(By.id("btnSubmit"));
// Test invalid email submission
emailInput.sendKeys("invalid-email");
submitButton.click();
// Wait for 4 seconds to observe the error message
Thread.sleep(4000);
// Verify the error message is displayed
WebElement errorEmailMessage = driver.findElement(By.id("error-email"));
String errorMessage = errorEmailMessage.getText();
if ("Email is not in a valid format".equals(errorMessage)) {
LOGGER.info("Invalid email test passed!");
} else {
LOGGER.severe("Invalid email test failed! Error message: " + errorMessage);
}
// Test valid email submission
emailInput.clear();
emailInput.sendKeys("validemail@example.com");
submitButton.click();
// Wait for 4 seconds to observe the success message
Thread.sleep(4000);
// Verify the success message is displayed
WebElement successMessage = driver.findElement(By.id("card-success-message"));
if (successMessage.isDisplayed()) {
LOGGER.info("Valid email test passed!");
} else {
LOGGER.severe("Valid email test failed!");
}
// Verify the success email is correct
WebElement successEmail = driver.findElement(By.id("user-email"));
String displayedEmail = successEmail.getText();
if ("validemail@example.com".equals(displayedEmail)) {
LOGGER.info("Success email test passed!");
} else {
LOGGER.severe("Success email test failed! Displayed email: " + displayedEmail);
}
// Test dismissing the success message
WebElement dismissButton = driver.findElement(By.id("btnDismissMessage"));
dismissButton.click();
// Wait for 4 seconds to observe the state after dismissing the success message
Thread.sleep(4000);
// Verify the sign-up form is displayed again
WebElement signUpForm = driver.findElement(By.id("card-sign-up"));
if (signUpForm.isDisplayed()) {
LOGGER.info("Dismiss message test passed!");
} else {
LOGGER.severe("Dismiss message test failed!");
}
// Wait for 6 seconds before closing the browser
Thread.sleep(6000);
} catch (InterruptedException e) {
// Log interrupted exception
LOGGER.log(Level.SEVERE, "Interrupted exception occurred", e);
}
finally {
// Close the browser
driver.quit();
}
}
}
```
- **Remarque :** Dans le script ci-dessus, remplacez `C:\\Selenium WebDriver Chrome\\chromedriver-win64\\chromedriver.exe` par le chemin d'accès à l'exécutable ChromeDriver de votre machine.
## Explication du Script de Test pour le Site Web `NewsletterSignUp`
Pour mieux comprendre le fonctionnement du script de test Selenium WebDriver pour le formulaire d'inscription à la newsletter, nous allons examiner chaque partie du code et expliquer son rôle.
**Initialisation du WebDriver et Configuration**
```java
// Configuration du WebDriver
System.setProperty("webdriver.chrome.driver", "C:\\Selenium WebDriver Chrome\\chromedriver-win64\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
```
Cette partie du code initialise et configure le WebDriver pour utiliser ChromeDriver.
- `java System.setProperty` définit le chemin vers l'exécutable de ChromeDriver sur votre machine.
- `WebDriver driver = new ChromeDriver();` crée une nouvelle instance de ChromeDriver, qui est utilisée pour interagir avec le navigateur Chrome.
**Bloc Try-Catch**
```java
try {
// Code de test Selenium
} catch (InterruptedException e) {
// Gestion des exceptions d'interruption
LOGGER.log(Level.SEVERE, "Exception d'interruption survenue", e);
} catch (Exception e) {
// Gestion des autres exceptions imprévues
LOGGER.log(Level.SEVERE, "Une exception imprévue est survenue", e);
} finally {
// Fermeture du navigateur à la fin du test
driver.quit();
}
```
- Le bloc `try-catch` entoure le code de test Selenium. Il capture et gère les exceptions qui peuvent survenir pendant l'exécution du test.
- `InterruptedException` est spécifiquement géré pour les interruptions lors de l'utilisation de `Thread.sleep()`, tandis que Exception gère toutes les autres exceptions imprévues.
- Le bloc `finally` garantit que le navigateur est fermé `driver.quit()` à la fin du test, quelle que soit l'issue.
**Navigation et Interaction avec les Éléments de la Page**
```java
// Navigation vers la page du formulaire
driver.get("https://newsletter-sign-up-with-success-message-challenge-tau.vercel.app/");
// Maximisation de la fenêtre du navigateur
driver.manage().window().fullscreen();
```
- `driver.get()` navigue vers l'URL spécifiée où se trouve le formulaire d'inscription à la newsletter.
- `driver.manage().window().fullscreen()` maximise la fenêtre du navigateur pour une meilleure visibilité et interaction pendant les tests.
**Interaction avec les Éléments de la Page**
```java
// Recherche des éléments de page
WebElement emailInput = driver.findElement(By.id("email"));
WebElement submitButton = driver.findElement(By.id("btnSubmit"));
```
- `driver.findElement(By.id("email"))` et `driver.findElement(By.id("btnSubmit"))` trouvent respectivement les éléments de la page avec les identifiants `email` (champ d'e-mail) et `btnSubmit` (bouton de soumission du formulaire).
**Soumission d'Email Invalide**
```java
// Soumission d'e-mail invalide
emailInput.sendKeys("invalid-email");
submitButton.click();
```
- `emailInput.sendKeys("invalid-email")` entre un e-mail invalide dans le champ d'e-mail.
- `submitButton.click()` clique sur le bouton Soumettre pour soumettre le formulaire avec l'e-mail invalide.
**Vérification des Messages**
```java
// Vérification de l'affichage du message d'erreur
WebElement errorEmailMessage = driver.findElement(By.id("error-email"));
String errorMessage = errorEmailMessage.getText();
if ("Email is not in a valid format".equals(errorMessage)) {
LOGGER.info("Test d'e-mail invalide réussi !");
} else {
LOGGER.severe("Échec du test d'e-mail invalide ! Message d'erreur : " + errorMessage);
}
```
- `driver.findElement(By.id("error-email"))` trouve l'élément de page qui affiche le message d'erreur pour un e-mail invalide.
- `errorEmailMessage.getText()` récupère le texte du message d'erreur. Le test vérifie si le message d'erreur attendu est affiché et enregistre le résultat dans les logs.
## Projet GitHub
Pour plus de pratique, voici le projet GitHub qui contient les scripts de tests pour les mini-projets écrit en JavaScript.
1. Formulaire d'inscription à la newsletter avec message de réussite.
2. Tableau de bord de suivi du temps.
### URL du repository
[Selinium_WebDriver_TestLogiciels_GitHub_Repository](https://github.com/ikitamalarose/SeliniumWebDriverTestsLogiciels.git)
**NB :** Lisez le fichier `README.md` pour les détails sur ce projet.
| laroseikitama |
1,918,757 | Python Best Practices for Data Engineer | Logging, Error Handling, Environment Variables, and Argument Parsing In this guide, we'll... | 0 | 2024-07-10T15:32:38 | https://dev.to/congnguyen/python-best-practices-for-data-engineer-epm | ##Logging, Error Handling, Environment Variables, and Argument Parsing##
In this guide, we'll explore best practices for using various Python functionalities to build robust and maintainable applications. We'll cover logging, exception handling, environment variable management, and argument parsing, with code samples and recommendations for each.
[1. Logging](#logging)
[2. Try-Exception Handling](#try-exception-handling)
[3. Using python-dotenv for Environment Variables](#using-dotenv)
[1. Argparse](#argparse)
###Logging###
Logging is a crucial aspect of Python development, as it allows you to track the execution of your program, identify issues, and aid in debugging. Here's how to effectively incorporate logging into your Python projects:
```python
# example.py
import logging
# Configure the logging format and level
logging.basicConfig(
format='%(asctime)s - %(levelname)s - %(message)s',
level=logging.INFO
)
# Example usage
logging.info('This is an informational message.')
logging.warning('This is a warning message.')
logging.error('This is an error message.')
logging.debug('This is a debug message.')
```
**Best Practices:**
- Use meaningful log levels (debug, info, warning, error, critical) to provide valuable context.
Avoid logging sensitive information, such as credentials or personal data.
- Ensure log messages are concise and informative, helping you quickly identify and resolve issues.
- Configure log file rotation and retention to manage storage and performance.
- Use structured logging (e.g., with JSON) for better machine-readability and analysis.
###Try Exception Handling###
Proper exception handling is essential for creating robust and resilient applications. Here's an example of using try-except blocks in Python:
```python
def divide_numbers(a, b):
try:
result = a / b
return result
except ZeroDivisionError:
logging.error('Error: Division by zero')
return None
except TypeError:
logging.error('Error: Invalid input types')
return None
except Exception as e:
logging.error(f'Unexpected error: {e}')
return None
```
**Best Practices:**
- Catch specific exceptions (e.g., ZeroDivisionError, TypeError) to handle known issues.
- Use a broad Exception block to catch any unexpected errors.
- Log the exception details for better debugging and error reporting.
- Provide meaningful error messages that help users understand the problem.
- Consider using custom exception classes for domain-specific errors.
- Implement graceful error handling to ensure your application remains responsive and doesn't crash.
###Using dotenv###
Environment variables are a common way to store sensitive or configuration-specific data, such as API keys, database credentials, or feature flags. The python-dotenv library makes it easy to manage these variables:
```python
#.env
API_KEY=xxxxxxx
DATABASE_URL=xxxxxxxxx
DB_PASSWORD=xxxxxxxx
DB_NAME=xxxxxx
#main.py
from dotenv import load_dotenv
import os
# Load environment variables from a .env file
load_dotenv()
# Access environment variables
api_key = os.getenv('API_KEY')
database_url = os.getenv('DATABASE_URL')
```
**Best Practices:**
- Store environment variables in a .env file, which should be excluded from version control.
- Use a .env.example file to document the required environment variables.
- Load environment variables at the start of your application, before accessing them.
- Provide default values or raise clear errors if required environment variables are missing.
- Use environment variables for sensitive data, not for general configuration.
- Organize environment variables by context (e.g., DATABASE_URL, AWS_ACCESS_KEY).
###Argparse###
The argparse module in Python allows you to easily handle command-line arguments and options. Here's an example:
```python
import argparse
parser = argparse.ArgumentParser(description='My Python Application')
parser.add_argument('-n', '--name', type=str, required=True, help='Name of the user')
parser.add_argument('-a', '--age', type=int, default=30, help='Age of the user')
parser.add_argument('-v', '--verbose', action='store_true', help='Enable verbose output')
args = parser.parse_args()
print(f'Name: {args.name}')
print(f'Age: {args.age}')
if args.verbose:
logging.info('Verbose mode enabled.')
```
**Best Practices:**
- Use descriptive and concise argument names.
- Provide helpful descriptions for each argument.
- Specify the appropriate data types for arguments (e.g., type=str, type=int).
- Set required=True for mandatory arguments.
- Provide default values for optional arguments.
- Use boolean flags (e.g., action='store_true') for toggles or switches.
- Integrate argument parsing with your application's logging and error handling.
###Putting It All Together###
Here's a combined code snippet that demonstrates the usage of all the functionalities covered in this guide:
```python
import logging
from dotenv import load_dotenv
import os
import argparse
# Configure logging
logging.basicConfig(
format='%(asctime)s - %(levelname)s - %(message)s',
level=logging.INFO
)
# Load environment variables
load_dotenv()
api_key = os.getenv('API_KEY')
database_url = os.getenv('DATABASE_URL')
# Define command-line arguments
parser = argparse.ArgumentParser(description='My Python Application')
parser.add_argument('-n', '--name', type=str, required=True, help='Name of the user')
parser.add_argument('-a', '--age', type=int, default=30, help='Age of the user')
parser.add_argument('-v', '--verbose', action='store_true', help='Enable verbose output')
args = parser.parse_args()
# Example function with exception handling
def divide_numbers(a, b):
try:
result = a / b
return result
except ZeroDivisionError:
logging.error('Error: Division by zero')
return None
except TypeError:
logging.error('Error: Invalid input types')
return None
except Exception as e:
logging.error(f'Unexpected error: {e}')
return None
# Example usage
if __:
name = args.name
age = args.age
print(f'Name: {name}')
print(f'Age: {age}')
if args.verbose:
logging.info('Verbose mode enabled.')
logging.info(f'API Key: {api_key}')
logging.info(f'Database URL: {database_url}')
result = divide_numbers(10, 2)
if result is not None:
print(f'Division result: {result}')
```
This code demonstrates the integration of logging, exception handling, environment variable management, and argument parsing. It includes best practices for each functionality, such as using appropriate log levels, catching specific exceptions, securely accessing environment variables, and providing helpful command-line argument descriptions.
| congnguyen | |
1,918,758 | tiotle | `12 | 0 | 2024-07-10T15:33:31 | https://dev.to/jisu_yoon_f365f5929386b81/tiotle-8ih | `12 | jisu_yoon_f365f5929386b81 | |
1,919,483 | Are Dymo labels water-resistant? | Dymo labels vary in their water resistance depending on the type of label and its intended use.... | 0 | 2024-07-11T09:15:43 | https://dev.to/john10114433/are-dymo-labels-water-resistant-1dkk | Dymo labels vary in their water resistance depending on the type of label and its intended use. Here’s a breakdown of the water resistance for different Dymo labels:
[dymo 30252 labels](https://betckey.com/collections/hot-sale/products/dymo-30252-compatible-address-and-barcode-labels)
1. Standard Dymo Labels
Description: These labels are generally made from paper or plastic with a standard adhesive.
Water Resistance: Limited. Standard Dymo labels are not designed to be water-resistant. Exposure to moisture or water can cause the labels to peel, smudge, or lose adhesion over time.
Recommended Use: Best for indoor environments where water exposure is minimal.
2. Dymo Industrial Labels
Description: These labels are made from durable materials and are designed for harsh conditions.
Water Resistance: High. Dymo Industrial Labels are water-resistant and can withstand exposure to moisture, chemicals, and varying temperatures.
Recommended Use: Ideal for labeling equipment, tools, and surfaces in industrial environments where water or moisture is a factor.
3. Dymo Weatherproof Labels
Description: Specifically designed for outdoor use, these labels are made from materials that can endure weather conditions.
Water Resistance: Very High. Dymo Weatherproof Labels are highly water-resistant and can handle prolonged exposure to rain, humidity, and other weather elements.
Recommended Use: Suitable for outdoor labeling on items like equipment, signage, and packaging that will be exposed to the elements.
4. Dymo Plastic Labels
Description: Made from plastic materials, these labels are more resistant to water compared to paper labels.
Water Resistance: Moderate to High. While not as resistant as Industrial or Weatherproof Labels, plastic labels can tolerate some level of moisture and are more durable than paper labels.
Recommended Use: Good for indoor applications where there may be occasional exposure to moisture.
General Tips for Using Dymo Labels in Moist Environments
Preparation: Ensure that the surface where the label will be applied is clean and dry to enhance adhesion and durability.
Label Choice: For environments with significant moisture or where the labels may come into contact with water, opt for Dymo Industrial or Weatherproof Labels for better performance.
Protection: In cases where water exposure is limited but unavoidable, consider additional protective measures, such as covering labels with a clear laminate or applying them to protected areas.
[dymo 30252 labels](https://betckey.com/collections/hot-sale/products/dymo-30252-compatible-address-and-barcode-labels)
While not all Dymo labels are designed to be water-resistant, Dymo offers specific options like Industrial and Weatherproof Labels that are engineered to withstand moisture and other challenging conditions. For general use where water exposure is minimal, standard Dymo labels should suffice, but for more demanding environments, selecting a label with appropriate water resistance is crucial for maintaining label integrity and performance. | john10114433 | |
1,918,762 | Buy Verified Paxful Account | https://dmhelpshop.com/product/buy-verified-paxful-account/ Buy Verified Paxful Account There are... | 0 | 2024-07-10T15:34:12 | https://dev.to/figema4733/buy-verified-paxful-account-21b4 | webdev, javascript, beginners, programming | ERROR: type should be string, got "https://dmhelpshop.com/product/buy-verified-paxful-account/\n\n\nBuy Verified Paxful Account\nThere are several compelling reasons to consider purchasing a verified Paxful account. Firstly, a verified account offers enhanced security, providing peace of mind to all users. Additionally, it opens up a wider range of trading opportunities, allowing individuals to partake in various transactions, ultimately expanding their financial horizons.\n\nMoreover, Buy verified Paxful account ensures faster and more streamlined transactions, minimizing any potential delays or inconveniences. Furthermore, by opting for a verified account, users gain access to a trusted and reputable platform, fostering a sense of reliability and confidence.\n\nLastly, Paxful’s verification process is thorough and meticulous, ensuring that only genuine individuals are granted verified status, thereby creating a safer trading environment for all users. Overall, the decision to Buy Verified Paxful account can greatly enhance one’s overall trading experience, offering increased security, access to more opportunities, and a reliable platform to engage with. Buy Verified Paxful Account.\n\nBuy US verified paxful account from the best place dmhelpshop\nWhy we declared this website as the best place to buy US verified paxful account? Because, our company is established for providing the all account services in the USA (our main target) and even in the whole world. With this in mind we create paxful account and customize our accounts as professional with the real documents. 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In this exploration of verified Paxful accounts, we will unravel the significance they hold, why they are crucial, and shed light on the process behind their activation, providing a comprehensive understanding of how they function. Buy verified Paxful account.\n\n \n\nWhy should to Buy Verified Paxful Account?\nThere are several compelling reasons to consider purchasing a verified Paxful account. Firstly, a verified account offers enhanced security, providing peace of mind to all users. Additionally, it opens up a wider range of trading opportunities, allowing individuals to partake in various transactions, ultimately expanding their financial horizons.\n\nMoreover, a verified Paxful account ensures faster and more streamlined transactions, minimizing any potential delays or inconveniences. Furthermore, by opting for a verified account, users gain access to a trusted and reputable platform, fostering a sense of reliability and confidence. 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Invest in verified Paxful accounts to take advantage of a leading platform in the online trading landscape.\n\n \n\nHow Old Paxful ensures a lot of Advantages?\n\nExplore the boundless opportunities that Verified Paxful accounts present for businesses looking to venture into the digital currency realm, as companies globally witness heightened profits and expansion. These success stories underline the myriad advantages of Paxful’s user-friendly interface, minimal fees, and robust trading tools, demonstrating its relevance across various sectors.\n\nBusinesses benefit from efficient transaction processing and cost-effective solutions, making Paxful a significant player in facilitating financial operations. Acquire a USA Paxful account effortlessly at a competitive rate from usasmmonline.com and unlock access to a world of possibilities. Buy Verified Paxful Account.\n\nExperience elevated convenience and accessibility through Paxful, where stories of transformation abound. 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Two essential security components, Two-Factor Authentication and Routine Security Audits, serve as the pillars fortifying this shield of protection, ensuring a secure and trustworthy user experience for all. Buy Verified Paxful Account.\n\nConclusion\nInvesting in Bitcoin offers various avenues, and among those, utilizing a Paxful account has emerged as a favored option. Paxful, an esteemed online marketplace, enables users to engage in buying and selling Bitcoin. Buy Verified Paxful Account.\n\nThe initial step involves creating an account on Paxful and completing the verification process to ensure identity authentication. Subsequently, users gain access to a diverse range of offers from fellow users on the platform. Once a suitable proposal captures your interest, you can proceed to initiate a trade with the respective user, opening the doors to a seamless Bitcoin investing experience.\n\nIn conclusion, when considering the option of purchasing verified Paxful accounts, exercising caution and conducting thorough due diligence is of utmost importance. It is highly recommended to seek reputable sources and diligently research the seller’s history and reviews before making any transactions.\n\nMoreover, it is crucial to familiarize oneself with the terms and conditions outlined by Paxful regarding account verification, bearing in mind the potential consequences of violating those terms. By adhering to these guidelines, individuals can ensure a secure and reliable experience when engaging in such transactions. Buy Verified Paxful Account.\n\nContact Us / 24 Hours Reply\nTelegram:dmhelpshop\nWhatsApp: +1 (980) 277-2786\nSkype:dmhelpshop\nEmail:dmhelpshop@gmail.com\n\n " | figema4733 |
1,918,763 | Testing models in Flutter | Know so many people that do not do testing or do not know what Testing means, even you know that... | 0 | 2024-07-10T15:36:06 | https://dev.to/sazardev/testing-models-in-flutter-4bch | flutter, testing | Know so many people that do not do testing or do not know what _Testing_ means, even you know that another one do not even know the powerful native testing that Flutter integrate in our projects. So let us find out what **flutter_test** can do for use, and how can make us be more productive and efficient in our projects.
## Model Testing
It is not too usual to do this type of test, but sometimes we need to _check the logic_ of our models or interact directly with the model, and we feel tired of making a UI only to check if the model is correct.
Let's use a simple model of `User `that is ideal to use from **APIs **model, using factory and `toJson `method.
```dart
class User {
final String username;
final String email;
final String token;
User({
required this.username,
required this.email,
required this.token,
});
factory User.fromJson(Map<String, dynamic> json) {
return User(
username: json['username'],
email: json['email'],
token: json['token'],
);
}
Map<String, dynamic> toJson() {
return {
'username': username,
'email': email,
'token': token,
};
}
@override
String toString() {
return 'User(username: $username, email: $email, token: $token)';
}
}
```
And now, you have this model with the name `user.dart`, then outside of `src` go to the folder `test`, if you don't have it create a new one. Then create a new file named `user_test.dart`. Then we need a classic main:
```dart
void main() {
}
```
Inside of our main add this new test:
```dart
test('User toJson() should return a valid JSON map', () {});
```
Quite simple, right? This is how we create a _function test_, it is important to ALWAYS have a clear description of what our test will do. Now we need to add some code in our function.
```dart
test('User toJson() should return a valid JSON map', () {
final user = User(
username: 'sample_username',
email: 'sample_email@example.com',
token: 'sample_token',
);
final json = user.toJson();
expect(json['username'], equals('sample_username'));
expect(json['email'], equals('sample_email@example.com'));
expect(json['token'], equals('sample_token'));
});
```
As you can see, it is a remarkably simple test that we only check if toJson make the JSON that we want, why? You need to check if all the parameters are correct to send to our API.
And now let's evaluate if a JSON send of our API is valid to create a User object for Flutter:
```dart
test('User fromJson() should create a valid User object', () {
final json = {
'username': 'sample_username',
'email': 'sample_email@example.com',
'token': 'sample_token',
};
final user = User.fromJson(json);
expect(user.username, equals('sample_username'));
expect(user.email, equals('sample_email@example.com'));
expect(user.token, equals('sample_token'));
});
```
## Created the file test, and now?
After this, we have the simple task to run in the terminal: `flutter test` and enjoy the green lights (Or red...) and that is all to do for simple testing in models. In a future post I will explain how to test SQLite models or Hive models, etc. But for now, this is all, thanks for reading!
| sazardev |
1,918,764 | What Programming Languages are Used in Blockchain Technology? | Blockchain technology is the decentralized and distributed ledger system that popular digital... | 0 | 2024-07-10T15:36:48 | https://dev.to/johnlimer/what-programming-languages-are-used-in-blockchain-technology-1i7b | webdev, javascript, beginners, programming | <span style="font-weight: 400;">Blockchain technology is the decentralized and distributed ledger system that popular digital currencies such as Bitcoin, Ethereum, and other cryptocurrencies like meme coins are based on. Blockchain developers are tasked with creating and updating the blockchain using various programming languages, like solidity, C++, and python, to keep digital currency projects up to date and operational in the market for investors and users who want to buy, sell, and trade crypto.</span>
<span style="font-weight: 400;">Since Bitcoin’s launch in 2009, a huge influx of crypto investors have been interested in new coins to invest in, which has kept blockchain developers busy. Some investors look for established coins, like Ethereum or Bitcoin, while others are more interested in new, interesting coins like meme coins that can be purchased for less and show promise of high returns. Many </span><a href="https://jp.cryptonews.com/cryptocurrency/best-meme-coins/"><span style="font-weight: 400;">check on CryptoNews Japan</span></a><span style="font-weight: 400;"> for insights from author and crypto expert Ikkan Kawade for the top meme coins worth keeping an eye on in 2024. Kawade explains that even though these coins were born as jokes, some have shown 10,000x growth, which excites investors. Not only does this excite investors, but the increasing popularity and adoption of crypto also increase the need for blockchain developers who know programming languages so that they can work on and support new crypto projects. </span>
<span style="font-weight: 400;">In this article, we will look at some of the programming languages used in blockchain technology development.</span>
<h2><b>1. Solidity</b></h2>
<span style="font-weight: 400;">Solidity is one of the most widely used languages for developing smart contracts on the Ethereum blockchain. It is a statically typed language tailored for the </span><a href="https://medium.com/@orderlynetwork/what-is-ethereum-virtual-machine-evm-in-blockchain-e7db57167bea"><span style="font-weight: 400;">Ethereum Virtual Machine</span></a><span style="font-weight: 400;"> (EVM) with a high-level syntax that is similar to JavaScript. It is used for writing smart contracts for decentralized applications (dApps), creating tokens, and decentralized finance (DeFi) protocols on the Ethereum network.</span>
<h2><b>2. C++</b></h2>
<span style="font-weight: 400;">Because of its high performance and efficiency, C++ is a popular choice for blockchain development. The object-oriented programming language with low-level memory control is ideal for developing blockchain applications that need high performance. It is used in developing the core of blockchain networks, such as Bitcoin, and building high-performance blockchain platforms.</span>
<h2><b>3. Python</b></h2>
<span style="font-weight: 400;">This beginner-friendly programming language is widely used in different fields, which include blockchain development. It is simple and has broad libraries, which makes it an attractive choice for creating blockchain applications. Python syntax is easy to read and is used in smart contracts and blockchain applications. </span>
<h2><b>4. JavaScript</b></h2>
<span style="font-weight: 400;">JavaScript is popular for web development and is now being used in </span><a href="https://www.forbes.com/advisor/investing/cryptocurrency/what-is-blockchain/"><span style="font-weight: 400;">blockchain</span></a><span style="font-weight: 400;"> technology together with its runtime environment, Node.js. JavaScript's event-driven architecture and compatibility with front-end and back-end development suit the needs of blockchain applications. It is mostly used for developing decentralized applications (dApps) with frameworks like Truffle and interacting with blockchain networks through libraries like Web3.js. </span>
<h2><b>5. Go (Golang)</b></h2>
<span style="font-weight: 400;">Go, or Golang, is a programming language developed by Google known for its simplicity, efficiency, and concurrency features. It is a powerful language for building scalable blockchain applications such as Avalanche, Near Protocol, and Solana. Go is compiled into machine code, which means that it can run as fast as C++ code in many cases. Its built-in garbage collector enables it to automatically manage memory and avoid memory leaks. Golang is the programming language behind blockchain platforms like Hyperledger Fabric.</span>
<h2><b>6. Rust</b></h2>
<span style="font-weight: 400;">Rust is a systems programming language that mainly focuses on safety and performance. It is gaining popularity in blockchain development due to its ability to provide memory safety without compromising performance. Rust has been used in developing performance-critical blockchain applications and building blockchain protocols and platforms like Polkadot. The Polkadot network is powered by the native cryptocurrency, DOT, which has several uses, including </span><a href="https://cryptobetting.ltd/"><span style="font-weight: 400;">crypto gambling</span></a><span style="font-weight: 400;"> and staking.</span>
<span style="font-weight: 400;">Of course, in the end, the choice of which programming language to use depends on the expected project performance, the platform it will run on, and whether the developer is familiar with the language or not.</span> | johnlimer |
1,918,765 | How to Use ServBay to Enable npm | npm (Node Package Manager) is Node.js's package management tool and its default package manager. It... | 0 | 2024-07-10T15:39:00 | https://dev.to/servbay/how-to-use-servbay-to-enable-npm-2k3l | node, webdev, beginners, programming | `npm` (Node Package Manager) is Node.js's package management tool and its default package manager. It is used to install, share, and manage JavaScript packages and is one of the largest open-source libraries globally. Using npm can help developers easily manage project dependencies and enhance development efficiency.
[Download ServBay](https://www.servbay.com)
## Enabling npm
Node.js installed through ServBay comes with npm enabled by default. If you find that npm is not enabled or needs updating, you can follow these steps.
## Confirming npm Installation
Open the terminal and enter the following command to check the npm version number
```bash
npm -v
```
Example output
```bash
9.1.0
```
## Updating npm
If you need to update npm, you can update it with the following command
```bash
npm install -g npm
```
Confirm the version number again
```bash
npm -v
```
## Benefits of Using npm
The main advantage of `npm` is its globally largest open-source library and convenient package management capabilities. Here are some practical examples of using `npm`
### Initializing a Project
Use `npm` to initialize a new Node.js project
```bash
npm init
```
This will guide you to create a new package.json file containing basic information and dependencies of the project.
### Installing Dependencies
Use `npm` to install project dependencies
```bash
npm install
```
This will install all dependencies based on the `package.json` file.
### Adding a Dependency
Add a new dependency package
```bash
npm install lodash --save
```
This will install the `lodash` package and update the `package.json` file.
### Removing a Dependency
Remove a dependency package
```bash
npm uninstall lodash --save
```
This will remove the `lodash` package from the project and update the `package.json` file.
### Updating Dependencies
Update all dependencies in the project
```bash
npm update
```
### Using npm Scripts
`npm` allows defining scripts in the `package.json` file, making it convenient to execute common commands. For example, add the following scripts to the `package.json` file
```json
"scripts": {
"start": "node app.js",
"test": "mocha"
}
```
Then you can run these scripts with the following commands
```bash
npm start
npm test
```
## Common Commands
Install a Global Package
```bash
npm install -g <package-name>
```
For example, install `nodemon`
```bash
npm install -g nodemon
```
View Global Packages
```bash
npm list -g --depth=0
```
```bash
npm cache clean --force
```
By using `npm`, developers can easily manage project dependencies, quickly install and update packages, and thus improve overall development efficiency.
---
Big thanks for sticking with ServBay. Your support means the world to us 💙.
Got questions or need a hand? Our tech support team is just a shout away. Here's to making web development fun and fabulous! 🥳
If you want to get the latest information, follow [X(Twitter)](https://x.com/ServBayDev) and [Facebook](https://www.facebook.com/ServBay.Dev).
If you have any questions, our staff would be pleased to help, just join our [Discord](https://talk.servbay.com) community | servbay |
1,918,766 | Introducing Cora: A Powerful File Concatenation Tool for Developers | In the world of software development, we often find ourselves dealing with multiple files that need... | 0 | 2024-07-10T15:41:51 | https://dev.to/shaharia/introducing-cora-a-powerful-file-concatenation-tool-for-developers-p9n | filesystem, concate, llm | In the world of software development, we often find ourselves dealing with multiple files that need to be combined for various reasons. Whether it's merging documentation, preparing training data for machine learning models, or consolidating code for review, the need to concatenate files is a common task. Enter Cora, a robust and flexible command-line tool designed to make file concatenation a breeze.
Project link: https://github.com/shaharia-lab/cora
## What is Cora?
Cora, which stands for **CO**ncatenate and **R**ead **A**ll, is an open-source Go application that simplifies the process of combining multiple files into a single output file. With its intuitive command-line interface and powerful features, Cora is set to become an essential tool in every developer's toolkit.
## Key Features
Cora comes packed with features that set it apart from simple concatenation tools:
1. **Recursive Directory Traversal**: Cora can walk through directories recursively, allowing you to process entire project structures with ease.
2. **Flexible File Selection**: Use include and exclude patterns to precisely control which files are concatenated. This feature uses glob patterns, giving you powerful file matching capabilities.
3. **Customizable Output**: Add separators between files and prefixes before each file path in the output, making the resulting file more readable and organized.
4. **Large File Handling**: Cora is designed to handle large files efficiently, making it suitable for big data preprocessing tasks.
5. **Debugging Mode**: Enable debug logging to get detailed information about the concatenation process, which is invaluable for troubleshooting.
## Difference between `cat` and `Cora`
While the `cat` command is indeed useful for simple file concatenation, Cora offers several advanced features that make it more powerful and flexible for complex scenarios.
| Feature | `cat` | `cora` |
|---------|-------|--------|
| Basic file concatenation | ✅ | ✅ |
| Recursive directory traversal | ❌ | ✅ |
| Flexible file selection (glob patterns) | ❌ | ✅ |
| Exclude patterns | ❌ | ✅ |
| Custom separators between files | ❌ | ✅ |
| File path prefixes in output | ❌ | ✅ |
| Built-in debugging mode | ❌ | ✅ |
| Cross-platform consistency | ❌ (behavior may vary) | ✅ |
| Large file handling | ✅ (but may require additional tools) | ✅ (optimized) |
| Speed for simple concatenations | ✅ (generally faster) | ✅ (may have slight overhead) |
| Requires external tools for complex tasks | ✅ (often used with find, xargs, etc.) | ❌ (all-in-one solution) |
| Customizable output file | ❌ (requires output redirection) | ✅ (direct specification) |
| Part of standard Unix toolset | ✅ | ❌ (requires installation) |
## Use Cases
Cora's versatility makes it suitable for a wide range of scenarios:
- **LLM Context Preparation**: When working with Large Language Models, Cora can help you prepare comprehensive context by concatenating relevant code files or documentation.
- **Code Review**: Merge multiple source files into a single document for easier review, especially useful for pull request reviews or security audits.
- **Documentation Generation**: Combine multiple markdown files to create comprehensive project documentation or technical specifications.
- **Log Analysis**: Concatenate multiple log files for comprehensive analysis while using exclude patterns to filter out irrelevant files.
- **Data Preprocessing**: Merge multiple data files into a single file for easier processing in data analysis pipelines.
## Getting Started with Cora
Installing Cora is straightforward. If you have Go installed, you can use the following command:
```bash
go install github.com/shaharia-lab/cora@latest
```
Once installed, you can start using Cora with a simple command:
```bash
cora -s /path/to/source -o output.txt -i "*.md" -e "*.tmp"
```
This command will concatenate all Markdown files from the specified source directory, excluding any `.tmp` files, and save the result to `output.txt`.
## The Power of Open Source
Cora is not just a tool; it's an open-source project that welcomes contributions from the developer community. Whether you're interested in adding new features, improving performance, or fixing bugs, your contributions are valuable and appreciated.
## Conclusion
In a world where data is increasingly distributed across multiple files and formats, tools like Cora become indispensable. Its combination of simplicity and power makes it suitable for both quick, one-off tasks and integration into complex data processing pipelines.
We invite you to try Cora for your file concatenation needs and experience the difference it can make in your workflow. Visit our [GitHub repository](https://github.com/shaharia-lab/cora) to get started, and don't hesitate to share your feedback or contribute to the project.
Remember, in the world of development, small tools can make a big difference. Cora is here to simplify your file management tasks, allowing you to focus on what truly matters – building great software.
Happy coding!** | shaharia |
1,918,768 | Cloud Computing and its Benefits | In today's interconnected world, where digital transformation is reshaping industries and enterprises... | 0 | 2024-07-10T15:49:58 | https://dev.to/awal_saani/cloud-computing-and-its-benefits-960 | cloudcomputing, aws, azure, googlecloud | In today's interconnected world, where digital transformation is reshaping industries and enterprises at a rapid pace, cloud computing stands out as a cornerstone of modern IT infrastructure. Whether you're streaming your favorite music, collaborating on a project with colleagues halfway across the globe, or managing a vast database of customer information, chances are you're leveraging the power of the cloud.
## What is Cloud Computing?
At its core, cloud computing refers to the delivery of computing services—servers, storage, databases, networking, software, and more—over the internet ("the cloud"). Instead of owning physical hardware and managing everything locally, users access these resources on-demand from cloud service providers like Amazon Web Services (AWS), Microsoft Azure, or Google Cloud Platform. This model allows businesses and individuals to scale resources up or down as needed, paying only for what they use, and eliminating the need for costly upfront investments in hardware and infrastructure.
## Benefits of Cloud Computing
The advantages of cloud computing are numerous and profound:
**Scalability and Flexibility:** One of the most significant benefits of the cloud is its ability to scale resources instantly. Whether your application needs more processing power, storage, or bandwidth, cloud services can accommodate fluctuations in demand effortlessly.
**Cost Efficiency:** Cloud computing follows a pay-as-you-go pricing model, which means organizations can avoid upfront capital expenditures and instead pay only for the resources they consume. This cost-effective approach is particularly beneficial for startups and small businesses.
**Enhanced Collaboration:** With cloud-based tools and applications, teams can collaborate in real-time from anywhere in the world. This fosters productivity and creativity, as barriers to communication and sharing are minimized.
**Security and Reliability:** Leading cloud providers invest heavily in state-of-the-art security measures and infrastructure redundancy. This means your data is often more secure and accessible than it would be on-premises.
**Automatic Updates and Maintenance:** Cloud service providers handle the maintenance, updates, and management of the infrastructure, allowing businesses to focus on innovation and core competencies rather than IT upkeep.
## Cloud Deployment Models
Cloud computing offers several deployment models to suit different organizational needs:
**Public Cloud:** Services are provided over the public internet and available to anyone who wants to purchase them. It offers scalability and affordability, making it popular among startups and small businesses.
**Private Cloud:** Dedicated resources and infrastructure are used exclusively by a single organization. It provides greater control over data and security, making it suitable for industries with strict compliance requirements, such as finance and healthcare.
**Hybrid Cloud:** Combines elements of public and private clouds, allowing data and applications to be shared between them. It offers flexibility and optimization of existing infrastructure while leveraging the scalability and cost-efficiency of the public cloud.
## Cloud Service Models
Cloud computing also categorizes services into different models based on the level of abstraction and control they provide:
**Infrastructure as a Service (IaaS):** Offers virtualized computing resources over the internet. Users can rent virtual machines, storage, and networking components to build and run their own applications. Example providers include AWS EC2 and Azure Virtual Machines.
**Platform as a Service (PaaS):** Provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the underlying infrastructure. Examples include Google App Engine and AWS Elastic Beanstalk.
**Software as a Service (SaaS):** Delivers software applications over the internet on a subscription basis. Users access these applications via a web browser, eliminating the need for installation and maintenance. Popular examples include Microsoft Office 365, Salesforce, and Google Workspace.
In conclusion, cloud computing has revolutionized the way businesses operate by offering unparalleled flexibility, scalability, and cost efficiency. Whether you're a small startup looking to scale rapidly or a large enterprise seeking to streamline operations, embracing the cloud can unlock new opportunities for growth and innovation. | awal_saani |
1,918,770 | Day -3 learning | 1. Numeric Types (int, float, complex) a) 26-int (numbers) b) 26.5-float (numbers with decimal) c)... | 0 | 2024-07-10T17:12:23 | https://dev.to/perumal_s_9a6d79a633d63d4/day-3-learning-22la | **1. Numeric Types (int, float, complex)**
a) 26-int (numbers)
b) 26.5-float (numbers with decimal)
c) 2+3i complex (real number+ imaginary number)
**2. Text Type (strings)**
a)""
b)''
c)"""
"""
**3. Boolean Type (bool)**
a) True
b) False
**4. None Type (None)**
None means its like nothing there is no value
**5. How to check a data type ?**
a) identify the data type below methods
E.g.
type(26) result = int
type (26.5) result = float
type (True) result = bool
type("Chennai") result= str
**6. What is a variable ?**
variable is nothing kind of bag here we can save or store or define the object
**7. How to define it **
type variable Name = value;
E.g.
name=chozhan (variable)
city=thanjavur (variable)
**8. valid, invalid variables**
A variable name cannot start with a number have a space in the name or contain special characters
**9. assigning values**
**10. multiple assignment**
in single cell will assign multiple variable
E.g
name,age,city=chozhan,3000,thanjavr
code: print(name,age,city)
result: chozhan,3000,thanjavr
**11. unpacking**
will update future
**12. variable types**
will update future
**13. Constants**
user can defined the value should not be change
e.g.
PI=3.14
| perumal_s_9a6d79a633d63d4 | |
1,918,771 | **Exploring Object-Oriented Programming (OOP) Concepts with Java** | Unlock the Power of Java's Object-Oriented Programming Paradigm! Embrace the Essence of OOP... | 0 | 2024-07-10T15:58:07 | https://dev.to/gadekar_sachin/exploring-object-oriented-programming-oop-concepts-with-java-1pn6 | javaprogramming, oop, codewithpurpose, programming |
Unlock the Power of Java's Object-Oriented Programming Paradigm!
### Embrace the Essence of OOP in Java:
🌟 **Classes and Objects:** Dive into the building blocks of Java programs. Classes define blueprints for objects, while objects are instances that encapsulate data and behavior.
🔒 **Encapsulation:** Safeguard your data! Use access modifiers like `private` and `protected` to control data access, ensuring security and code integrity.
🔄 **Inheritance:** Extend your classes! Inheritance allows new classes to inherit attributes and methods from existing ones, fostering code reuse and hierarchy.
🔗 **Polymorphism:** Embrace versatility! Polymorphism lets objects of different classes be treated as objects of a common superclass, promoting flexibility in method invocation.
🧩 **Abstraction:** Simplify complexity! Abstract classes and interfaces define blueprints without implementation details, facilitating modular and scalable designs.
🎯 **Key Benefits:** Enhance code organization, promote reusability, and streamline maintenance with Java's robust OOP principles.
### Master Java's OOP with Confidence!
Whether you're a beginner or a seasoned developer, understanding OOP in Java empowers you to craft efficient, scalable, and resilient applications. Harness the power of objects today and elevate your coding journey with Java!
🔍 **Question of the Day**: What's the standout feature of Object-Oriented Programming in Java that has revolutionized your development projects? Share your insights and experiences below! 🚀💬
Let's spark a lively discussion on how OOP principles empower your coding journey. Drop your thoughts in the comments! 👇💡
---
| gadekar_sachin |
1,918,772 | Leveraging Web3 to Enhance JavaScript Development | The evolution of the internet into Web3 promises to redefine how developers approach building... | 0 | 2024-07-10T15:58:13 | https://dev.to/asmsc/leveraging-web3-to-enhance-javascript-development-4aeo | javascript, beginners | The evolution of the internet into Web3 promises to redefine how developers approach building applications. JavaScript, the backbone of modern web development, plays a crucial role in this transformation. Here's how Web3 is enhancing JavaScript development:
<h2>New JavaScript Libraries and Frameworks</h2>
With the rise of Web3, new JavaScript libraries and frameworks are emerging to facilitate the development of decentralized applications (dApps). These tools help developers interact with blockchain networks, manage smart contracts, and ensure secure transactions.
<h3>Ethers.js and Web3.js</h3>
Two essential libraries for Web3 development in JavaScript are ethers.js and web3.js. These libraries provide tools to interact with the Ethereum blockchain, allowing developers to create, test, and deploy smart contracts.
```
// Example using ethers.js to connect to the Ethereum blockchain
const { ethers } = require('ethers');
const provider = new ethers.providers.JsonRpcProvider('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID');
const wallet = new ethers.Wallet('YOUR_PRIVATE_KEY', provider);
async function getBalance(address) {
const balance = await provider.getBalance(address);
console.log(`Balance of ${address}: ${ethers.utils.formatEther(balance)} ETH`);
}
getBalance('0xYourEthereumAddress');
```
As Soobin Choi explains, many developers will be looking at the <a href="https://www.techopedia.com/kr/cryptocurrency/best-presales" target="_new" rel="noreferrer">2024년 사전판매 코인 순위</a> to invest early in these tokens. As they fully unravel within the market, we will be able to explore the capabilities of these JavaScript tools in developing robust and secure applications.
<h2>Decentralized Storage Solutions</h2>
Web3 promotes the use of decentralized storage solutions like IPFS (InterPlanetary File System) to ensure data integrity and availability without relying on centralized servers. JavaScript libraries make it easy to integrate these solutions into your applications.
```
const IPFS = require('ipfs-core');
async function storeData(data) {
const node = await IPFS.create();
const { cid } = await node.add(data);
console.log(`Data added with CID: ${cid}`);
}
storeData('Hello, Web3!');
```
<h2>Enhanced Privacy with Zero-Knowledge Proofs</h2>
Privacy is a cornerstone of Web3. Zero-knowledge proofs (ZKPs) allow developers to build applications where users can prove knowledge of information without revealing the information itself. This is crucial for applications requiring high privacy standards.
For example, a blockchain-powered <a href="https://anonymouscasino.ltd/" target="_new" rel="noreferrer">anonymous casino</a> could allow users to connect their crypto wallets and play without needing to provide personal information. Similarly, zero-knowledge proofs can enable secure and private data sharing in financial and healthcare applications.
```
const snarkjs = require('snarkjs');
async function generateProof(input, wasmPath, zkeyPath) {
const { proof, publicSignals } = await snarkjs.plonk.fullProve(input, wasmPath, zkeyPath);
console.log(`Proof: ${JSON.stringify(proof)}`);
console.log(`Public Signals: ${JSON.stringify(publicSignals)}`);
}
generateProof({ a: 3, b: 11 }, 'circuit.wasm', 'circuit_final.zkey');
```
<h2>Improved Security</h2>
Web3 enhances security by distributing power across a wide network of validators rather than concentrating it in a single place. This decentralized approach makes Web3 platforms less susceptible to attacks.
Security protocols and smart contract auditing tools will become crucial in the development process, ensuring that decentralized applications are secure from vulnerabilities and exploits. For example, barring a <a href="https://dci.mit.edu/51-attacks" target="_new" rel="noreferrer">51% attack</a>, these platforms are more resilient to security breaches.
```
const Web3 = require('web3');
const web3 = new Web3('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID');
const contractAddress = '0xYourSmartContractAddress';
const contractABI = []; // Add your contract ABI here
const contract = new web3.eth.Contract(contractABI, contractAddress);
contract.methods.yourMethod().call()
.then(result => console.log(result))
.catch(error => console.error(error));
```
<h2>Data Control and Interoperability</h2>
In a Web3 environment, users will have more control over their data and how it is shared. Blockchain technology allows for the creation of decentralized identity management systems where users can control their personal information and share it with applications as needed. This can lead to more seamless interoperability between platforms.
Using Web3 identity management tools, user profiles can be created on the blockchain and used to access multiple platforms without the need for separate logins. This will help combat the misuse of user data for corporate and financial gain, promoting a more user-centric internet.
```
const { ethers } = require('ethers');
const provider = new ethers.providers.Web3Provider(window.ethereum);
const signer = provider.getSigner();
const address = await signer.getAddress();
console.log(`Connected address: ${address}`);
```
For more information on how data is handled by tech companies, you can refer to this resource on <a href="https://www.security.org/resources/data-tech-companies-have/" target="_new" rel="noreferrer">how tech companies use data</a>.
By integrating these aspects into JavaScript development, Web3 will not only enhance the capabilities of blockchain technology but also create a more secure, private, and user-controlled internet.
| asmsc |
1,918,773 | 3D Riemann Surface Matrix | Check out this Pen I made! | 0 | 2024-07-10T16:00:12 | https://dev.to/dan52242644dan/3d-riemann-surface-matrix-12oj | codepen, javascript, html, discuss | Check out this Pen I made!
{% codepen https://codepen.io/Dancodepen-io/pen/oNrgWVg %} | dan52242644dan |
1,918,774 | Increase your knowledge in cloud computing with Microsoft Learn | Want to know about the advantages of leveraging cloud technology? Want to know how you will be... | 0 | 2024-07-10T16:02:08 | https://dev.to/hasanul_banna_himel/increase-your-knowledge-in-cloud-computing-with-microsoft-learn-2pf1 | Want to know about the advantages of leveraging cloud technology? Want to know how you will be beneficial by using cloud services?
Here in Microsoft Learn you can get this idea.
Course Link: https://learn.microsoft.com/en-us/training/modules/describe-benefits-use-cloud-services/?wt.mc_id=studentamb_322573
Discover the many advantages and understand why adopting cloud technology is transformative in the digital age.
Course link: https://learn.microsoft.com/en-us/training/paths/microsoft-azure-fundamentals-describe-cloud-concepts/?wt.mc_id=studentamb_322573
| hasanul_banna_himel | |
1,918,775 | Web3 Unveiled: The Future of a Decentralized Internet | The internet is undergoing a transformative change with the advent of Web3, also known as Web 3.0.... | 0 | 2024-07-10T16:03:16 | https://dev.to/dipakahirav/web3-unveiled-the-future-of-a-decentralized-internet-2cff | web3, webdev, web, learning | The internet is undergoing a transformative change with the advent of Web3, also known as Web 3.0. This new iteration promises a more transparent, secure, and user-centric online experience, built on decentralized technologies like blockchain. In this blog, we will explore the key concepts of Web3, its advantages, challenges, and real-world use cases.
please subscribe to my [YouTube channel](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
) to support my channel and get more web development tutorials.
### Key Concepts of Web3
#### 1. Decentralization
- **Traditional Web (Web 2.0):** Web 2.0 relies on centralized servers controlled by a few large corporations such as Google, Amazon, and Facebook.
- **Web3:** In contrast, Web3 operates on a decentralized network of nodes, achieved through blockchain technology. This means data is distributed across a network rather than stored in a central location, enhancing security and reducing the risk of single points of failure.
#### 2. Blockchain Technology
- **Definition:** A blockchain is a decentralized ledger that records transactions across many computers, ensuring that registered transactions cannot be altered retroactively.
- **Functionality:** Blockchain ensures transparency and security by encrypting each transaction and linking it to the previous one, forming a chain of blocks. This immutable ledger is accessible to all participants, fostering trust in the system.
#### 3. Smart Contracts
- **Definition:** Smart contracts are self-executing contracts with the terms of the agreement directly written into code.
- **Functionality:** These contracts automatically execute and enforce the terms when predefined conditions are met, eliminating the need for intermediaries and reducing the potential for disputes.
#### 4. Cryptocurrency
- **Definition:** Cryptocurrencies are digital or virtual currencies that use cryptography for security.
- **Role in Web3:** Cryptocurrencies enable peer-to-peer transactions without the need for a central authority. They also fuel blockchain networks by rewarding participants (e.g., miners), ensuring the network's operation and security.
#### 5. Decentralized Applications (dApps)
- **Definition:** dApps are applications that run on a decentralized network, typically using blockchain technology.
- **Features:** Unlike traditional apps, dApps operate without a central point of control, enhancing security and user control over data. They provide services ranging from finance to social media, all while maintaining decentralization.
#### 6. Ownership and Identity
- **Self-Sovereign Identity:** In Web3, users control their digital identities through decentralized identity systems, ensuring privacy and security.
- **Digital Ownership:** Web3 allows users to own digital assets (e.g., NFTs) directly, without intermediaries, enabling true ownership and control over digital property.
### Advantages of Web3
#### 1. Enhanced Security
- Decentralization reduces the risk of single points of failure and makes it harder for hackers to compromise the network.
#### 2. Transparency and Trust
- Blockchain's immutable ledger ensures transparency, allowing users to verify transactions and data independently.
#### 3. User Control
- Users have greater control over their data and digital identities, reducing reliance on centralized entities and enhancing privacy.
#### 4. Innovation and Inclusion
- Web3 promotes innovation through open protocols and decentralized development. It also aims to be more inclusive, providing financial services to unbanked populations via decentralized finance (DeFi).
### Challenges and Considerations
#### 1. Scalability
- Current blockchain networks face scalability issues, leading to slower transaction times and higher costs.
#### 2. User Experience
- The user experience in Web3 can be complex and challenging for non-technical users, requiring improvements in interface design.
#### 3. Regulatory Environment
- The regulatory landscape for Web3 and cryptocurrencies is still evolving, leading to uncertainties and potential legal challenges.
#### 4. Interoperability
- Ensuring interoperability between different blockchain networks and traditional systems is a significant technical challenge.
### Use Cases of Web3
#### 1. Decentralized Finance (DeFi)
- Platforms like Uniswap and Aave enable peer-to-peer lending, borrowing, and trading without traditional financial intermediaries.
#### 2. Non-Fungible Tokens (NFTs)
- NFTs represent unique digital assets, enabling ownership of digital art, music, and virtual real estate (e.g., platforms like OpenSea and Decentraland).
#### 3. Decentralized Autonomous Organizations (DAOs)
- DAOs are organizations governed by smart contracts, where decisions are made collectively by members through voting mechanisms.
#### 4. Supply Chain Management
- Blockchain can enhance transparency and traceability in supply chains, improving efficiency and reducing fraud.
### Conclusion
Web3 represents a paradigm shift in how we interact with the internet, offering a more decentralized, secure, and user-centric experience. While it brings numerous advantages, there are still challenges to overcome before it can achieve widespread adoption. As technology evolves, Web3 has the potential to transform various industries and create new opportunities for innovation and inclusion.
By embracing the principles of Web3, we can look forward to a future where the internet is more equitable, secure, and transparent for all users.
Feel free to leave your comments or questions below. If you found this guide helpful, please share it with your peers and follow me for more web development tutorials. Happy coding!
### Follow and Subscribe:
- **Website**: [Dipak Ahirav] (https://www.dipakahirav.com)
- **Email**: dipaksahirav@gmail.com
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- **YouTube**: [devDive with Dipak](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
)
- **LinkedIn**: [Dipak Ahirav](https://www.linkedin.com/in/dipak-ahirav-606bba128)
| dipakahirav |
1,918,776 | Table Extraction and Processing from PDFs - A Tutorial | Tables in PDFs are very prevalent and for those of us who are intent on extracting information from... | 0 | 2024-07-11T14:44:20 | https://unstract.com/blog/extract-table-from-pdf/ | python, ai, opensource, tutorial |
Tables in PDFs are very prevalent and for those of us who are intent on extracting information from PDFs, they often contain very useful information in a very dense format. Processing tables in PDFs, if not the top 10 priority for humanity, it certainly is an important one. Once data from PDFs is extracted, it’s relatively easy to process it using Large Language Models or LLMs. We need to do this in two phases: extract the raw data from tables in PDFs and then pass it to an LLM so that we can extract the data we need as structured JSON. Once we have JSON, it becomes super easy to process in almost any language.
## LLMWhisperer for PDF raw text extraction
In this article, we’ll see how to use Unstract’s LLMWhisperer as the text extraction service for PDFs. As you’ll see in some examples we discuss, LLMWhisperer allows us to extract data from PDFs by page, so we can extract exactly what we need. The key difference between various OCR systems and LLMWhisperer is that it outputs data in a manner that is easy for LLMs to process. Also, we don’t have to worry about whether the PDF is a native text PDF, or is made up of scanned images. LLMWhisperer can automatically switch between text and OCR mode as required by the input document.
## Before you run the project
The source code for the project [can be found here on Github](https://github.com/Zipstack/llmwhisperer-table-extraction). To successfully run the extraction script, you’ll need 2 API keys. One for LLMWhisperer and the other for OpenAI APIs. Please be sure to read the Github project’s README to fully understand OS and other dependency requirements. You can [sign up for LLMWhisperer](https://llmwhisperer.unstract.com/products), get your API key, and process up to 100 pages per day free of charge.
## The input documents
Let’s take a look at the documents and the exact pages within the documents from which we need to extract the tables in question. First off, we have a [credit card statement](https://github.com/Zipstack/llmwhisperer-table-extraction/blob/main/assets/docs/Chase%20Freedom.pdf) from which we’ll need to extract the table of spends, which is on page 2 as you can see in the screenshot below.
The other document we’ll use is one of Apple’s quarterly financial statements, also known as a 10-Q report. From this, we’ll extract Apple’s sales data by different regions in the world. We will extract a table that contains this information from page 14, a screenshot of which is provided below. You can find the [sample 10-Q report](https://github.com/Zipstack/llmwhisperer-table-extraction/blob/main/assets/docs/Apple_10-Q-Q2-2024.pdf) in the companion Github repository.
## The code
Using LLMWhisperer’s Python client, we can extract data from these documents as needed. LLMWhisperer is a cloud service and requires an API key, which you can get for free. LLMWhisperer’s free plan allows you to extract up to 100 pages of data per day, which is more than we need for this example.
```
def extract_text_from_pdf(file_path, pages_list=None):
llmw = LLMWhispererClient()
try:
result = llmw.whisper(file_path=file_path,
pages_to_extract=pages_list)
extracted_text = result["extracted_text"]
return extracted_text
except LLMWhispererClientException as e:
error_exit(e)
```
Just calling the \`whisper()\` method on the client, we’re able to extract raw text from images, native text PDFs, scanned PDFs, smartphone photos of documents, etc.
Here’s the extracted data from page 2 of our credit card statement, which contains the list of spends.
This is the extracted text from page 14 of Apple’s 10-Q document, which contains the sales by geography table towards the end:
## Langchain+Pydantic to structure extracted raw tables
Langchain is a popular LLM programming library and Pydantic is one of the parsers it supports for structured data output. If you process a lot of documents of the same type, you might be better off using an open source platform like [Unstract](https://unstract.com/) which allows you to more visually and interactively develop generic prompts. But for one-off tasks like the example we’re working on, where the main goal is to demonstrate extraction and structuring, Langchain should do just fine. For a comparison of approaches in structuring unstructured documents, read this article: [Comparing approaches for using LLMs for structured data extraction from PDFs.](https://unstract.com/blog/comparing-approaches-for-using-llms-for-structured-data-extraction-from-pdfs/)
## Defining the schema
To use Pydantic with Langchain, we define the schema or structure of the data we want to extract from the unstructured source as Pydantic classes. For the credit card statement spend items, this is how it looks like:
```
class CreditCardSpend(BaseModel):
spend_date: datetime = Field(description="Date of purchase")
merchant_name: str = Field(description="Name of the merchant")
amount_spent: float = Field(description="Amount spent")
class CreditCardSpendItems(BaseModel):
spend_items: list[CreditCardSpend] = Field(description="List of spend items from the credit card statement")
```
Looking at the definitions, \`CreditCardSpendItems\` is just a list of \`CreditCardSpend\`, which defines the line item schema, which contains the spend date, merchant name and amount spent.
**For the 10-Q regional sales details, the schema looks like the following:**
```
class RegionalFinancialStatement(BaseModel):
quarter_ending: datetime = Field(description="Quarter ending date")
net_sales: float = Field(description="Net sales")
operating_income: float = Field(description="Operating income")
ending_type: str = Field(description="Type of ending. Set to either '6-month' or '3-month'")
class GeographicFinancialStatement(BaseModel):
americas: list[RegionalFinancialStatement] = Field(description="Financial statement for the Americas region, "
"sorted chronologically")
europe: list[RegionalFinancialStatement] = Field(description="Financial statement for the Europe region, sorted "
"chronologically")
greater_china: list[RegionalFinancialStatement] = Field(description="Financial statement for the Greater China "
"region, sorted chronologically")
japan: list[RegionalFinancialStatement] = Field(description="Financial statement for the Japan region, sorted "
"chronologically")
rest_of_asia_pacific: list[RegionalFinancialStatement] = Field(description="Financial statement for the Rest of "
"Asia Pacific region, sorted "
"chronologically")
```
## Constructing the prompt and calling the LLM
The following code uses Langchain to let us define the prompts to structure data from the raw text like we need it. The \`compile_template_and_get_llm_response()\` function has all the logic to compile our final prompt from the preamble, the instructions from the Pydantic class definitions along with the extracted raw text. It then calls the LLM and returns the JSON response.
```
def compile_template_and_get_llm_response(preamble, extracted_text, pydantic_object):
postamble = "Do not include any explanation in the reply. Only include the extracted information in the reply."
system_template = "{preamble}"
system_message_prompt = SystemMessagePromptTemplate.from_template(system_template)
human_template = "{format_instructions}\n\n{extracted_text}\n\n{postamble}"
human_message_prompt = HumanMessagePromptTemplate.from_template(human_template)
parser = PydanticOutputParser(pydantic_object=pydantic_object)
chat_prompt = ChatPromptTemplate.from_messages([system_message_prompt, human_message_prompt])
request = chat_prompt.format_prompt(preamble=preamble,
format_instructions=parser.get_format_instructions(),
extracted_text=extracted_text,
postamble=postamble).to_messages()
chat = ChatOpenAI()
response = chat(request, temperature=0.0)
print(f"Response from LLM:\n{response.content}")
return response.content
def extract_cc_spend_from_text(extracted_text):
preamble = ("You're seeing the list of spend items from a credit card statement and your job is to accurately "
"extract the spend date, merchant name and amount spent for each transaction.")
return compile_template_and_get_llm_response(preamble, extracted_text, CreditCardSpendItems)
def extract_financial_statement_from_text(extracted_text):
preamble = ("You're seeing the financial statement for a company and your job is to accurately extract the "
"revenue, cost of revenue, gross profit, operating income, net income and earnings per share.")
return compile_template_and_get_llm_response(preamble, extracted_text, GeographicFinancialStatement)
```
## The output: PDF to JSON
Let’s examine the JSON output from the credit card statement table and the region-wise sales table. Here’s the structured JSON from the credit card spend items table first:
```
{
"spend_items": [
{
"spend_date": "2024-01-04",
"merchant_name": "LARRY HOPKINS HONDA 7074304151 CA",
"amount_spent": 265.40
},
{
"spend_date": "2024-01-04",
"merchant_name": "CICEROS PIZZA SAN JOSE CA",
"amount_spent": 28.18
},
{
"spend_date": "2024-01-05",
"merchant_name": "USPS PO 0545640143 LOS ALTOS CA",
"amount_spent": 15.60
},
{
"spend_date": "2024-01-07",
"merchant_name": "TRINETHRA SUPER MARKET CUPERTINO CA",
"amount_spent": 7.92
},
{
"spend_date": "2024-01-04",
"merchant_name": "SPEEDWAY 5447 LOS ALTOS HIL CA",
"amount_spent": 31.94
},
{
"spend_date": "2024-01-06",
"merchant_name": "ATT*BILL PAYMENT 800-288-2020 TX",
"amount_spent": 300.29
},
{
"spend_date": "2024-01-07",
"merchant_name": "AMZN Mktp US*RT4G124P0 Amzn.com/bill WA",
"amount_spent": 6.53
},
{
"spend_date": "2024-01-07",
"merchant_name": "AMZN Mktp US*RT0Y474Q0 Amzn.com/bill WA",
"amount_spent": 21.81
},
{
"spend_date": "2024-01-05",
"merchant_name": "HALAL MEATS SAN JOSE CA",
"amount_spent": 24.33
},
[some items removed for concision]
]
}
```
Excellent! We got exactly what we were looking for. Next, let’s look at the JSON output structured from the regional sales table from Apple’s 10-Q PDF.
```
{
"americas": [
{
"quarter_ending": "2024-03-30T00:00:00Z",
"net_sales": 37273,
"operating_income": 15074,
"ending_type": "3-month"
},
{
"quarter_ending": "2023-04-01T00:00:00Z",
"net_sales": 37784,
"operating_income": 13927,
"ending_type": "3-month"
},
{
"quarter_ending": "2024-03-30T00:00:00Z",
"net_sales": 87703,
"operating_income": 35431,
"ending_type": "6-month"
},
{
"quarter_ending": "2023-04-01T00:00:00Z",
"net_sales": 87062,
"operating_income": 31791,
"ending_type": "6-month"
}
],
"europe": [
{
"quarter_ending": "2024-03-30T00:00:00Z",
"net_sales": 24123,
"operating_income": 9991,
"ending_type": "3-month"
},
{
"quarter_ending": "2023-04-01T00:00:00Z",
"net_sales": 23945,
"operating_income": 9368,
"ending_type": "3-month"
},
{
"quarter_ending": "2024-03-30T00:00:00Z",
"net_sales": 54520,
"operating_income": 22702,
"ending_type": "6-month"
},
{
"quarter_ending": "2023-04-01T00:00:00Z",
"net_sales": 51626,
"operating_income": 19385,
"ending_type": "6-month"
}
],
"greater_china": [
{
"quarter_ending": "2024-03-30T00:00:00Z",
"net_sales": 16372,
"operating_income": 6700,
"ending_type": "3-month"
},
{
"quarter_ending": "2023-04-01T00:00:00Z",
"net_sales": 17812,
"operating_income": 7531,
"ending_type": "3-month"
},
{
"quarter_ending": "2024-03-30T00:00:00Z",
"net_sales": 37191,
"operating_income": 15322,
"ending_type": "6-month"
},
{
"quarter_ending": "2023-04-01T00:00:00Z",
"net_sales": 41717,
"operating_income": 17968,
"ending_type": "6-month"
}
],
"japan": [
"Some items removed for concision"
],
"rest_of_asia_pacific": [
"Some items removed for concision"
]
}
```
This output is as we expected, too. With this kind of structured output, it becomes very easy for us to process complex information in these kinds of tables further. The key to easy extraction of structured information is the availability of cleanly formatted input tables and [LLMWhisperer](https://unstract.com/llmwhisperer/) here plays a key role in that extraction even for scanned documents or documents that are just smartphone photos.
## Links to libraries, packages, and code
- LLMWhisperer: A general purpose text extraction service that extracts data from images and PDFs, preparing it and optimizing it for consumption by Large Language Models or LLMs.
- [LLMwhisperer Python client on PyPI](https://pypi.org/project/llmwhisperer-client/) | [Try LLMWhisperer Playground for free](https://pg.llmwhisperer.unstract.com/) | [Learn more about LLMWhisperer](https://unstract.com/llmwhisperer/)
- The code for this guide can be found in this [GitHub Repository](https://github.com/Zipstack/llmwhisperer-table-extraction)
- [Pydantic](https://github.com/pydantic/pydantic): Use Pydantic to declare your data model. This output parser allows users to specify an arbitrary Pydantic Model and query LLMs for outputs that conform to that schema.
## For the curious. Who am I and why am I writing about PDF text extraction?
I'm Shuveb, one of the co-founders of Unstract.
[Unstract](https://unstract.com/) is a no-code platform to eliminate manual processes involving unstructured data using the power of LLMs. The entire process discussed above can be set up without writing a single line of code. And that’s only the beginning. The extraction you set up can be deployed in one click as an API or ETL pipeline.
With API deployments you can expose an API to which you send a PDF or an image and get back structured data in JSON format. Or with an ETL deployment, you can just put files into a Google Drive, Amazon S3 bucket or choose from a variety of sources and the platform will run extractions and store the extracted data into a database or a warehouse like Snowflake automatically. Unstract is an Open Source software and is available at https://github.com/Zipstack/unstract.
If you want to quickly try it out, signup for our free trial. More information [here](https://unstract.com/start-for-free/).
Note: I originally posted this on the [Unstract blog](https://unstract.com/blog/extract-table-from-pdf/) a couple of weeks ago.
| shuveb_hussain |
1,918,778 | How to connect DynamoDB with CakePHP4 | Introduction When using DynamoDB, I struggled with connecting CakePHP and DynamoDB due to... | 0 | 2024-07-10T16:08:33 | https://dev.to/hanaosan/referencing-dynamodb-with-cakephp4-2no6 | dynamodb, cakephp, aws, awssdk | ## Introduction
When using DynamoDB, I struggled with connecting CakePHP and DynamoDB due to outdated articles and the need to create many files. Therefore, I wrote this article as a memo.
## What We'll Do in This Article
We will connect to DynamoDB using CakePHP4 and retrieve table information.
## Prerequisites
- Using EC2
- OS Image: Amazon Linux 2 Kernel 5.10
- CakePHP Version: 4.2.12
- nginx: nginx/1.22.0
- PHP Version: PHP 7.4.33 (cli)
- PHP-FPM: PHP 7.4.33 (fpm-fcgi)
- AWS SDK for PHP Version: 3.257
## Preparation on AWS Side
### Creating a Table in DynamoDB
Create an appropriate table from AWS Console Home > DynamoDB > Tables > Create Table.
### Installing AWS SDK
While operations with AWS were done using the web console, the AWS SDK is necessary to use various services on AWS from a program.
The AWS SDK is a development kit (a set of APIs and libraries necessary for development) provided for different programming languages to operate AWS services from a program.
This time, we'll use the AWS SDK for PHP.
Install it using composer. ([Install Composer](https://getcomposer.org/download/))
```sh
cd project_base_directory
composer require aws/aws-sdk-php
```
If the aws directory is created within /vendor, the installation is successful.
### Creating an IAM Role
Like entering a password to log in from the console, authentication information is needed when accessing resources on AWS from a program.
Obtain the AWS access key as authentication information.
There are three ways to obtain the access key depending on the user type and authentication method. (Reference: [Obtaining AWS Access Keys](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/SettingUp.DynamoWebService.html))
If accessing AWS as an IAM user, there are two ways:
- Obtain the access key directly from the IAM user (long-term credentials) ← AWS not recommended
- Create an IAM role and link it to the EC2 instance. Automatically obtain temporary credentials each time you access (short-term credentials)
This time, we adopted the method of sending requests to AWS using temporary credentials by utilizing an IAM role.
Create an IAM role with a policy that allows access to DynamoDB.
- IAM > Roles > Create Role
- Trusted Entity Type
- AWS Service
- Use Case
- EC2
- Permission Policy
- AmazonDynamoDBFullAccess
- Role Name
- role_test
Link the created IAM role to the EC2 instance.
- EC2 > Select Instance > Actions > Security > Modify IAM Role
- Select role_test and "Update IAM Role"
## Preparation on the PHP Side
### Instantiate Client Object
To operate the database on DynamoDB, instantiate the client object (this time DynamoDB object).
The client object contains methods for executing the service's API.
To instantiate, pass the configuration options as an associative array to the constructor (a method executed when the class is generated).
Although you can directly instantiate the client object as shown below, this time, we instantiate the Sdk class → then instantiate DynamoDB.
Example:
```php
//Create an S3Client
$s3 = new Aws\S3\S3Client([
'version' => 'latest',
'region' => 'us-east-2'
]);
```
By passing the associative array of options to the Sdk class, it can be used as a common set of configuration options for multiple clients.
This time, I used only DynamoDB, but if you want to use other AWS services like S3 at the same time, it's convenient as you don't need to write the configuration options each time.
Although only `region` and `version` values are set in the associative array of options, the access key is also referenced when the client object is generated, as the EC2 instance linked to the IAM role created earlier obtains temporary credentials.
This time, I created and described files under the plugin directory.
#### plugins/aws/Client/aws.php
```php
<?php
namespace aws\Client;
use Aws;
use Aws\DynamoDb;
use Cake\Core\Configure;
/**
* Common AWS Class
*/
class AwsClient
{
private $_config = null;
private $_sdk = null;
private $_dynamodb = null;
/**
* Constructor
*/
public function __construct()
{
$this->_sdk = new Aws\Sdk([
'region' => 'ap-northeast-1',
'version' => 'latest',
]);
}
/**
* Get DynamoDB Client
*
* @return $this->dynamodb DynamoDbClient
*/
public function getDynamoDbClient()
{
if ($this->_dynamodb === null) {
$this->_dynamodb = $this->_sdk->createDynamoDb();
}
return $this->_dynamodb;
}
}
```
#### plugins/aws/DynamoDb.php
```php
<?php
namespace aws;
use aws\Client\AwsClient;
use Util\StrictComparison;
/**
* DynamoDB Interface
*/
class DynamoDb
{
private $_client = null;
/**
* Constructor
*
* @param \Aws\Client\AwsClient $awsClient AwsClient Object
*/
public function __construct(AwsClient $awsClient = null)
{
if (StrictComparison::isNull($awsClient)) {
$awsClient = new AwsClient();
}
$this->_client = $awsClient->getDynamoDbClient();
}
/**
* Get record by key name
*
* @param string $tableName Table name
* @param array $key Primary key
* @return object Matching record
*/
public function getItemByKey(string $tableName, array $key)
{
return $this->_client->getItem([
'Key' => $key,
'TableName' => $tableName,
]);
}
}
```
### Retrieve Table Information
With the necessary processes to connect to DynamoDB written, finally, instantiate the DynamoDB class in the Controller and retrieve the record by the specified key value.
#### src/Controller/DynamoDbController.php
```php
<?php
declare(strict_types=1);
namespace App\Controller;
use Cake\Controller\Controller;
use aws\DynamoDb;
class DynamoDbController extends Controller
{
public $tableName = 'created_table_name';
public $key = [
'key_name' => [
'S' => 'value_to_search'
],
];
public function index()
{
$dynamoDb = new DynamoDb();
$result = $dynamoDb->getItemByKey($this->tableName, $this->key);
// Pass the value of $result to the template so that the obtained content can be used on the view side.
$this->set(compact('result'));
}
}
```
You should be able to confirm that the target record is obtained by checking the result with var_dump, etc.
## Summary
Using this procedure, it seems possible to connect not only to DynamoDB but also to other AWS services.
Personally, it was very educational as I had only used Composer for loading packages, and now I know it is also necessary to use it when loading class files.
## References
- Creating IAM Roles
- [Using temporary credentials with AWS resources](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_use-resources.html)
- Setting Namespace
- [PHP Autoload (autoload)](https://qiita.com/atwata/items/5ba72d3d881a81227c2a)
- Instantiating Client Object
- [Creating a Client](https://docs.aws.amazon.com/sdk-for-php/v3/developer-guide/getting-started_basic-usage.html)
- Retrieving Table Information
- [Read items from a DynamoDB table using the AWS SDK](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GettingStarted.ReadItem.html) | hanaosan |
1,918,779 | p | A post by Phòng khámOptimal365 | 0 | 2024-07-10T16:11:10 | https://dev.to/optimal365/kha-4f8m | optimal365 | ||
1,918,780 | O Que é Docker? Entenda a Tecnologia de Containerização | O que é Docker? Docker é uma plataforma open-source que permite aos desenvolvedores criar,... | 0 | 2024-07-10T16:11:39 | https://dev.to/fernandomullerjr/o-que-e-docker-entenda-a-tecnologia-de-containerizacao-4bb5 | docker, containers, devops | ## O que é Docker?
Docker é uma plataforma open-source que permite aos desenvolvedores criar, implantar e gerenciar containers. Containers são componentes executáveis padronizados que combinam código-fonte com bibliotecas e dependências necessárias para executar o código em qualquer ambiente. Docker simplifica o desenvolvimento e entrega de aplicações distribuídas, sendo crucial para arquiteturas de microserviços.
## Vantagens dos Containers Docker
Leveza e Eficiência
Os containers são mais leves que máquinas virtuais, pois não carregam um sistema operacional completo. Isso resulta em inicialização mais rápida e uso mais eficiente do hardware.
## Portabilidade
Aplicações containerizadas podem ser executadas em qualquer ambiente sem modificações, seja no desktop, data center ou nuvem.
## Produtividade Aprimorada
Containers podem ser criados automaticamente a partir do código-fonte e permitem versionamento, rollback e compartilhamento em registries open-source como Docker Hub.
## Componentes e Termos do Docker
### Docker Engine
É a aplicação cliente/servidor que inclui o daemon Docker, API Docker e a interface de linha de comando (CLI) que se comunica com o daemon.
### Docker Daemon
Serviço que gerencia imagens Docker e containers.
### Docker Images
Imagens são arquivos somente leitura que contêm o código da aplicação e todas as dependências necessárias. Ao rodar uma imagem, ela se torna um container.
### Docker Hub
Repositório público onde os desenvolvedores compartilham e acessam imagens Docker.
### Casos de Uso do Docker
Migração para a Nuvem
Docker facilita a migração para a nuvem ao permitir que aplicações sejam movidas entre diferentes ambientes de forma rápida e fácil.
### Arquitetura de Microserviços
Docker simplifica a implementação de microserviços, onde cada componente pode ser containerizado e gerenciado independentemente.
### Integração e Entrega Contínuas (CI/CD)
Fornece um ambiente consistente para testes e deploys, reduzindo erros e aumentando a eficiência do pipeline CI/CD.
### DevOps
A combinação de Docker com práticas de DevOps permite iterações rápidas e entrega de software ágil.
## Conclusão
Docker revolucionou o desenvolvimento de software ao facilitar a criação, deploy e gestão de containers. Sua leveza, portabilidade e eficiência o tornam uma ferramenta indispensável para arquiteturas modernas e estratégias de DevOps.
## Recursos adicionais
Quer aprender mais sobre Docker? Explore nossos recursos dedicados para entender e dominar esta tecnologia essencial:
- Para uma introdução completa sobre Docker, visite: [Docker O que é](https://devopsmind.com.br/docker-pt-br/docker-o-que-e/)
- Para artigos detalhados e tutoriais sobre Docker em português, confira nossa seção exclusiva: [Aprenda Docker agora](https://devopsmind.com.br/category/docker-pt-br/).
## FAQs
O que é um container Docker?
Um container Docker é uma instância executável de uma imagem Docker, contendo o código da aplicação e suas dependências.
Quais são os principais benefícios do Docker?
Docker oferece portabilidade, leveza, produtividade aprimorada e eficiência no uso de recursos de hardware.
O que é Docker Hub?
Docker Hub é um repositório público onde os desenvolvedores podem compartilhar e acessar imagens Docker.
Como o Docker facilita a migração para a nuvem?
Docker permite mover aplicações entre diferentes ambientes de forma rápida e sem necessidade de modificações, facilitando a migração para a nuvem. | fernandomullerjr |
1,918,781 | Top 3 JavaScript Concepts Every Developer Should Know 🚀 | JavaScript is a versatile and powerful programming language that every web developer should master.... | 0 | 2024-07-10T16:12:50 | https://dev.to/dipakahirav/top-3-javascript-concepts-every-developer-should-know-3blj | javascript, webdev, beginners, learning | JavaScript is a versatile and powerful programming language that every web developer should master. Here are the top 3 JavaScript concepts you need to understand to elevate your coding skills! 💪
please subscribe to my [YouTube channel](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
) to support my channel and get more web development tutorials.
## 1. Closures 🔒
Closures are a fundamental concept in JavaScript that allow functions to access variables from an enclosing scope, even after that scope has finished executing. This is incredibly useful for creating private variables and functions.
### Example:
```javascript
function outerFunction() {
let outerVariable = 'I am outside!';
function innerFunction() {
console.log(outerVariable); // Can access outerVariable
}
return innerFunction;
}
const myFunction = outerFunction();
myFunction(); // Logs: 'I am outside!'
```
Closures are key to understanding how JavaScript handles variable scope and function execution. They also enable powerful patterns like function factories and module emulation. 🛠️
## 2. Promises and Async/Await ⏳
Handling asynchronous operations is crucial in modern JavaScript development. Promises and the async/await syntax provide elegant ways to manage asynchronous code, making it easier to read and maintain.
### Example with Promises:
```javascript
fetch('https://api.example.com/data')
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
```
### Example with Async/Await:
```javascript
async function fetchData() {
try {
const response = await fetch('https://api.example.com/data');
const data = await response.json();
console.log(data);
} catch (error) {
console.error('Error:', error);
}
}
fetchData();
```
Using async/await simplifies asynchronous code, making it look more like synchronous code. This improves readability and reduces the chance of errors. 💡
## 3. The Event Loop 🔄
The event loop is a core part of JavaScript's concurrency model, enabling non-blocking I/O operations. Understanding how the event loop works is essential for writing efficient and performant JavaScript code.
### Key Points:
- **Call Stack**: Where functions are executed.
- **Web APIs**: Browser-provided APIs like setTimeout, DOM events, etc.
- **Callback Queue**: Queue of callback functions ready to be executed.
- **Event Loop**: Continuously checks the call stack and callback queue, pushing callbacks onto the call stack when it's empty.
### Visual Explanation:
```javascript
console.log('Start');
setTimeout(() => {
console.log('Timeout');
}, 0);
console.log('End');
```
In the above code, the output will be:
```
Start
End
Timeout
```
This happens because `setTimeout` is pushed to the callback queue and only executed after the call stack is clear. 🕰️
---
Mastering these three concepts will significantly improve your JavaScript skills and help you write better, more efficient code. Happy coding! ✨
---
Feel free to leave your comments or questions below. If you found this guide helpful, please share it with your peers and follow me for more web development tutorials. Happy coding!
### Follow and Subscribe:
- **Website**: [Dipak Ahirav] (https://www.dipakahirav.com)
- **Email**: dipaksahirav@gmail.com
- **Instagram**: [devdivewithdipak](https://www.instagram.com/devdivewithdipak)
- **YouTube**: [devDive with Dipak](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
)
- **LinkedIn**: [Dipak Ahirav](https://www.linkedin.com/in/dipak-ahirav-606bba128) | dipakahirav |
1,918,782 | Building long lasting relationship with PMs (the good ones at least) | Just between developers, we don't like Product Managers. Too often they are simply a monitor on our... | 0 | 2024-07-10T16:13:15 | https://dev.to/kevin074/building-long-lasting-relationship-with-pms-the-good-ones-at-least-38o2 | discuss, career, productivity, developer | Just between developers, we don't like Product Managers. Too often they are simply a monitor on our progress. However, these roles exist for good reasons and it's unfortunate too many bad PMs exist because they saw a tiktok about big tech and jumping ship into the industry, thanks you weird big tech lifestyle influencers... why do these people exist anyways????
Product Managers have a critical role in the company. They are the bridge between managers, C-suites and us, the little cogs in their money printer. There are a lot of abstractions between what the leaderships wants to do and the product in the end. Your typical MBA graduates doesn't even know what the hell bubble sort is (even Obama knows come on!) so there is a mountain of details to filled in between.
The best PMs I have worked with have some decent technical understanding. One can write SQL queries, which me as a primarily frontend developer can't do well :) ... Another had a QA background, which meant we were getting QAed every step of the way :(
Good PMs do attend meeting with more technical details, to the point that although they sure as hell don't know what you are talking about, they at least see 10 inches beneath the waterline.
All that said, **it's important to always remember that PMs inherently speaking suffers a lot of anxiety on how the project is doing** because they don't know what the progress is REALLY like and how it can go wrong. We all know how a feature develops. First few days you are flying through 80% of the progress and the sky is blue. Then the next morning you wake up finding a hidden dragon in the abyss and now you are questioning whether you are even the person to do the job! Imagine the surprise, but from someone who can even see less than you and in an hour later have to tell the CEO that the project has to be delayed and the team now don't even know where they stand. Oh my god, I can't even imagine having to speak those words out...
<u>Back to the topic: how do you work with PMs?</u>
1.) First and the most important thing: build trust.
this means you basically **you try to be a good little boy at first**. Excruciating yes, but remember that they are realistically your superior and even though they technically aren't, they will be speaking to your manager and your manager's managers and all the way up 100000x more often than you ever will. communicating with the entire chain of command is their job! So you at least want PMs, and by proxy everyone in the chain, to know that you are a decent employee at the very least.
Keep in mind they aren't responsible for the technical, just the communication. So **they aren't afraid to say "the project is messed up because Joe couldn't..." and crack in your reputation**. Speak your name enough times and you will be on first name basis with your CTO and pip will be your last name.
2.) When things don't go well, take ownership.
your project won't be a smooth sailing, it rarely ever does. And no one really expects it to be too! So relax when things go south. Regardless, You will want to be the one that PMs turn to. Remember you are the developer with the closest look into what's going on inside the giant black box machine that YOU maintain. When things go south, immediately let PMs know you are aware and that you will inform them what's wrong, what's the fix, and what's the ETA. If you do this repeatedly, you will become the technical rockstar in their mind and **they will learn to lean on you and scrutinize you less**!
Of course try your best to not mess up in the first place, bug free la la land is still the world we all want to live in.
3.) communicate!
Because that's the only thing PMs know how to get the job done. **To them communicating is everything**. This can be done either in person, over slack, or even through Jira updates. One way or another, your relationship with PMs are built entirely on what you say and what you write. Unlike your engineering manager who can look at your code and assess base on the quality of your code, **your PMs assess you entirely on the quality of your communication.** This may be a hard lesson for many engineers, because we would have never chosen this career path if we like communicating so much. However communication is sadly the best way to build a mutual a long lasting relationship with PMs.
4.) communicate concisely and precisely!
Work on your writing and speaking skills. Start with writing, because writing allows you to edit, read back what was written, and improve upon. Eventually your writing skill level will bleed into your speaking skills. This is important because **PMs ain't got no time to listen to you talk about something in 50 words when it can really be said in 5**. Remember they don't care about a lot of details, and they want just enough details so that they can go back and not bullshit the leadership. **You aren't in high school anymore and HAVE to write a 500 words essay, lose that habit!**
One thing I like to do is that I first write the most important details like what's wrong, what's the ETA, what's the one sentence describing the fix. Then I would write a "tech note below" to jog down what's going on in the best level of detail I could provide. This helps you as the person fixing it to document and brain storm, it helps the PMs to take in whatever detail they want to know if any, and it helps your engineering manager to weigh in and vouch for you that what you provided (reason, eta, and fix) is reasonable and the path forward.
5.) when conflicts happen remember: **we are striving for the best product possible.**
Inevitably conflicts arises and communications appear personal. However, remember that whatever comes out your mouth it should always about how the team can produce the best product and best solutions. Keep that also in mind this is what the product managers are striving for so that you can keep your cool. Feel free to vent about it afterwards with your tech coworkers of course :) I do that very often and that person's name became a verb among friends
6.) Push back reasonably and provide alternatives:
this is really the badge of mastery, which is why this is the last point. You don't want to be JUST a good little pet doing everything they ask. They won't respect you this way in the long term and will step over you like a doormat you are.
When you see a possible alternative solution, speak. PMs are communicators and solution-wannabe, but really they are just the communicators. Sorry not sorry. They don't build the product so they won't know how else the product can be built. Sure they'll do market analysis and compare what other companies do for the same feature and what other standards should be kept in mind, but in the end the creativity CAN also be coming from you as the owner and builder of the feature.
They are often so deep in their own jungle that they can't see the tree in the forest. So don't be afraid to speak, remember, **all they want is the best feature to be built, and if you see another way, that's VERY welcomed!**
You want to do this occasionally and just often enough so that they know that keeping you in meetings is worthwhile, because you are listening, thinking, and _speaking_ in the meetings. You are a participant and not simply an yes-man.
This also means that when their ask is unreasonable, communicate that too. However, **remember that for one push back, also provide one solution**. You are the solution provider in the end so you can't just reject. Just rejecting is what your CEO does for a living!
Hopefully this was helpful, feel free to let me know I am full of shits. | kevin074 |
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1,918,784 | A Cry for Help. | In September 2019, a voice vividly told me; "Learn coding, it will make you so rich that people will... | 0 | 2024-07-10T16:16:59 | https://dev.to/colinchidiogo/a-cry-for-help-190c | beginners, programming, productivity, codenewbie |
In September 2019, a voice vividly told me;
**"Learn coding, it will make you so rich that people will say you did rituals '**
But it's a pity. A hopeless pity, that 4years after, I have not done much aside designing some UI/UX images.
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I have researched out how wonderful coding can be and how it can change my life greatly, bringing me out of extreme poverty. This only increased my passion.
But that's as far as I can go. I'm poor. Very poor and things are getting worse each passing day in this part of the world.
I really need a sincere heartfelt help right now from you great people of Dev Community.
It's not easy to swallow my pride and come out this clean and bare. **PLEASE KINDLY HELP ME GET THE TOOLS I NEED.**
I burn inside. I move around very unhappily. I feel depressed all the time as I can't seem to get anywhere near my goals.
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I'm a wannabe developer, or at least, I sincerely desire to be. I have vision for apps that will make differences, but I can't seem to get started. I've tried using free resources. I've tried saving up but they don't seem to take me anywhere. As I end up spending the savings on food.
I desperately need the right tools, the ones that will help me bring my vision to life.
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-a PC(maybe a laptop)
-a small 1KVA petrol generator.**
**PLEASE KINDLY HELP ME.**
I know that I'm not alone in this struggle. I know that there are others out there who have been in my shoes, who have felt the same frustration and longing. But, I also know that there are those who have overcome, who have succeeded, who have made a difference.
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Together, we can make a difference. Together, we can change the world. One line of code at a time.
**Please kindly help me.**
Feel free to reach me on Gmail at **colin.chidiogo@gmail.com**
Thank you all. | colinchidiogo |
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| qbexperrterror | |
1,918,796 | Understanding CSS Frameworks | CSS frameworks have revolutionized web design by providing pre-written, reusable code modules for... | 0 | 2024-07-10T16:21:25 | https://dev.to/hammad_hassan_6e981aa049b/understanding-css-frameworks-68e | webdev, javascript, beginners, programming | CSS frameworks have revolutionized web design by providing pre-written, reusable code modules for styling web pages. These frameworks offer a structured, organized way to create aesthetically pleasing and responsive websites without writing CSS from scratch.
Key Features of CSS Frameworks
Grid Systems: Most CSS frameworks come with built-in grid systems that allow for flexible and responsive layouts. This feature simplifies the process of arranging elements on a page, ensuring they adjust seamlessly across different screen sizes.
**Pre-designed Components:
**CSS frameworks include a variety of pre-designed UI components such as buttons, forms, navigation bars, modals, and more. These components follow best design practices and can be easily customized.
**Cross-browser Compatibility:
**Frameworks are designed to be cross-browser compatible, reducing the need to write custom CSS to handle differences between browsers.
**Customization:
**Although they come with default styles, CSS frameworks are highly customizable. Developers can override default styles or extend the framework to suit specific design needs.
**Popular CSS Frameworks
**Bootstrap: One of the most widely used CSS frameworks, Bootstrap offers extensive documentation and a large community. It includes a robust grid system, responsive design capabilities, and a plethora of components.
**Foundation**:
Known for its flexibility and customizability, Foundation is another popular choice. It provides advanced features like responsive typography, complex layout options, and support for Sass, a CSS preprocessor.
**Bulma:
**A modern CSS framework based on Flexbox, Bulma emphasizes simplicity and ease of use. It offers a clean and readable syntax, making it ideal for developers who prefer a straightforward approach.
**Tailwind CSS:
**Unlike traditional CSS frameworks, Tailwind CSS is utility-first, meaning it provides low-level utility classes that can be combined to build custom designs. This approach offers greater control over the design while maintaining consistency.
**Advantages of Using a CSS Framework
**Speed and Efficiency:
Frameworks speed up the development process by providing ready-made components and styles. This allows developers to focus more on functionality rather than spending time on basic styling.
**Consistency**:
Using a framework ensures design consistency across different pages and components, leading to a more cohesive user experience.
**Responsive Design:
**Most CSS frameworks are built with mobile-first principles, ensuring that websites are responsive and perform well on various devices.
**Community Support:
**Popular frameworks have extensive documentation and active communities, making it easier to find solutions to problems, share tips, and access third-party plugins and extensions.
**Reduced Cross-browser Issues:
**Frameworks handle many of the quirks associated with different browsers, reducing the need for extensive cross-browser testing and bug fixing.
**Conclusion**:
CSS frameworks provide an efficient and effective way to style web applications, offering a balance of structure, flexibility, and consistency. Whether you're prototyping a new project or developing a complex web application, a CSS framework can significantly streamline your workflow and improve the overall quality of your design.
For more detailed information, you can read further by [click here](https://globalquesthub.online/major-advantages-of-using-a-css-framework/).
| hammad_hassan_6e981aa049b |
1,918,797 | Exploring the Capabilities of Python in Blockchain Development | Python is one of the most versatile programming languages, widely used across various fields... | 0 | 2024-07-10T16:21:28 | https://dev.to/asmsc/exploring-the-capabilities-of-python-in-blockchain-development-1m13 | python, javascript, webdev, beginners | <p>Python is one of the most versatile programming languages, widely used across various fields including web development, data science, machine learning, and more recently, blockchain development. Its simplicity and the extensive range of libraries make it an attractive choice for developers diving into the world of blockchain.</p>
<h2>Why Use Python for Blockchain Development?</h2>
<p>Python's readable syntax and robust libraries provide a great starting point for blockchain development. Whether you're developing smart contracts, building decentralized applications (dApps), or creating new blockchain protocols, Python can be a powerful tool in your arsenal.</p>
<p>One of the main reasons developers choose Python is its extensive library support. Libraries like <code>web3.py</code> enable interaction with the Ethereum blockchain, while frameworks such as Flask and Django can be used to build web interfaces for blockchain applications. For instance, the <a href="https://medium.com/@orderlynetwork/what-is-ethereum-virtual-machine-evm-in-blockchain-e7db57167bea">Ethereum Virtual Machine</a> can be easily accessed and manipulated using Python.</p>
<h2>Developing a Simple Blockchain in Python</h2>
<p>To get a practical understanding of how Python can be used in blockchain development, let’s create a simple blockchain. This will demonstrate the fundamental concepts of blockchain technology.</p>
<h3>Step-by-Step Implementation</h3>
<h4>1. Setting Up the Environment</h4>
<p>Make sure you have Python installed on your system. You can download it from <a href="https://www.python.org/">python.org</a>.</p>
<h4>2. Creating the Blockchain Class</h4>
<div>
<pre>
<code>
import hashlib
import json
from time import time
class Blockchain:
def __init__(self):
self.chain = []
self.current_transactions = []
self.new_block(previous_hash='1', proof=100)
def new_block(self, proof, previous_hash=None):
block = {
'index': len(self.chain) + 1,
'timestamp': time(),
'transactions': self.current_transactions,
'proof': proof,
'previous_hash': previous_hash or self.hash(self.chain[-1]),
}
self.current_transactions = []
self.chain.append(block)
return block
def new_transaction(self, sender, recipient, amount):
self.current_transactions.append({
'sender': sender,
'recipient': recipient,
'amount': amount,
})
return self.last_block['index'] + 1
@staticmethod
def hash(block):
block_string = json.dumps(block, sort_keys=True).encode()
return hashlib.sha256(block_string).hexdigest()
@property
def last_block(self):
return self.chain[-1]
</code>
</pre>
</div>
<h4>3. Mining New Blocks</h4>
<div>
<pre>
<code>
def proof_of_work(last_proof):
proof = 0
while not valid_proof(last_proof, proof):
proof += 1
return proof
def valid_proof(last_proof, proof):
guess = f'{last_proof}{proof}'.encode()
guess_hash = hashlib.sha256(guess).hexdigest()
return guess_hash[:4] == "0000"
</code>
</pre>
</div>
<h3>Running the Blockchain</h3>
<p>To run your blockchain, you need to initialize it and mine new blocks. Here’s an example of how to do that:</p>
<div>
<pre>
<code>
blockchain = Blockchain()
last_proof = blockchain.last_block['proof']
proof = proof_of_work(last_proof)
blockchain.new_transaction(sender="0", recipient="address", amount=1)
previous_hash = blockchain.hash(blockchain.last_block)
block = blockchain.new_block(proof, previous_hash)
print(f"New Block Forged: {block}")
</code>
</pre>
</div>
<h2>Real-World Applications</h2>
<p>Python’s simplicity and readability make it an excellent choice for rapid prototyping and development in blockchain projects. Companies and developers are leveraging Python to create innovative solutions in finance, supply chain management, and even entertainment sectors. For instance, the rise of <a href="https://cryptobetting.ltd/">crypto gambling</a> platforms shows the diverse applications of blockchain technology beyond traditional finance.</p>
<h2>Staying Updated</h2>
<p>Staying updated with the latest trends and developments in the blockchain space is crucial. Platforms like <a href="https://jp.cryptonews.com/cryptocurrency/best-meme-coins/">CryptoNews Japan</a> provide valuable insights and expert opinions from industry leaders like Ikkan Kawade. Additionally, understanding the fundamentals of <a href="https://www.forbes.com/advisor/investing/cryptocurrency/what-is-blockchain/">blockchain</a> technology and its potential applications can give developers a significant edge.</p>
</body>
</html>
| asmsc |
1,918,801 | Cybersecurity: The Importance of The Human Element | In the ever-evolving landscape of cybersecurity, where technologies advance rapidly and threats grow... | 0 | 2024-07-10T16:30:41 | https://www.nilebits.com/blog/2024/07/cybersecurity-the-importance-of-the-human-element/ | cybersecurity, algorithms, encryption, programming | In the ever-evolving landscape of [cybersecurity](https://www.nilebits.com/blog/2022/08/best-practices-to-avoid-cybersecurity-risks/), where technologies advance rapidly and threats grow increasingly sophisticated, it’s easy to focus solely on technical solutions like firewalls, encryption, and intrusion detection systems. However, amidst all the algorithms and protocols, there remains a crucial element that can often be overlooked: the human factor.
Understanding the Human Element in Cybersecurity
Cybersecurity, often perceived as a realm dominated by technology and [algorithms](https://www.linkedin.com/pulse/sorting-algorithms-mastering-fundamentals-javascript-amr-saafan-qea5f/), fundamentally hinges on the actions and decisions of individuals within an organization. This article delves into the critical role of the human element in cybersecurity, exploring vulnerabilities, challenges, and strategies for mitigating risks.
The Human Factor: Vulnerabilities and Challenges
At the heart of cybersecurity lies the human factor—a significant source of vulnerabilities and challenges. Human error remains one of the leading causes of data breaches and security incidents. Whether it’s clicking on malicious links in phishing emails, using weak passwords, or inadvertently exposing sensitive information, individuals can unknowingly compromise the security of entire systems.
Behavioral Psychology and Cybersecurity
Understanding human behavior is crucial in developing effective cybersecurity strategies. Behavioral psychology insights reveal patterns in decision-making and risk perception that influence how individuals interact with technology. By applying principles such as cognitive biases and social engineering tactics, organizations can tailor training programs and awareness campaigns to enhance security awareness and resilience.
Leadership and Organizational Culture
Leadership commitment and organizational culture are instrumental in shaping cybersecurity practices. When leaders prioritize security as a strategic imperative and allocate resources to training and technology, they demonstrate a commitment to safeguarding digital assets. A culture that promotes accountability and transparency fosters collective responsibility for cybersecurity, reinforcing the importance of secure behaviors across all levels of the organization.
Integrating Human-Centric Approaches
Effective cybersecurity strategies integrate human-centric approaches alongside technological defenses. Policies that enforce strong authentication measures, data encryption protocols, and access controls mitigate risks posed by insider threats and unauthorized access. By aligning security measures with business objectives and regulatory requirements, organizations establish a resilient framework for protecting sensitive information and maintaining trust with stakeholders.
Case Studies and Lessons Learned
Examining real-world incidents provides valuable insights into the impact of human behavior on cybersecurity outcomes. Case studies of data breaches caused by insider threats or social engineering attacks underscore the need for continuous monitoring and response strategies. By learning from past incidents, organizations can strengthen their defenses and implement proactive measures to prevent future security breaches.
The Future of Human-Centric Security
Looking ahead, advancements in technology offer opportunities to enhance human-centric security. Artificial intelligence and machine learning enable predictive analytics and automated threat detection, augmenting human capabilities in identifying and mitigating cyber threats. Collaboration across industries and sectors facilitates knowledge-sharing and collective resilience against sophisticated adversaries, ensuring cybersecurity remains a dynamic and evolving discipline.
The Vulnerabilities Within
Cybersecurity is not just a matter of technological fortification; it hinges significantly on understanding and addressing the vulnerabilities inherent in human behavior. This section delves into the critical vulnerabilities within organizations and explores how human factors contribute to cybersecurity risks.
Human Error: A Leading Cause of Security Breaches
One of the most pervasive vulnerabilities in cybersecurity is human error. Studies consistently highlight that a significant proportion of data breaches and security incidents stem from mistakes made by employees, ranging from accidental data disclosures to falling prey to phishing scams. These errors underscore the importance of robust training programs and user awareness campaigns to mitigate risks effectively.
Lack of Awareness and Training
Inadequate cybersecurity awareness among employees poses a substantial risk to organizational security. Many individuals may not fully comprehend the implications of their actions online or understand the tactics employed by cybercriminals. Effective training programs should educate employees about common threats, such as phishing, social engineering, and malware, and empower them to adopt secure behaviors in their daily tasks.
Insider Threats: Unintentional and Malicious
Insider threats, whether unintentional or malicious, present significant challenges to cybersecurity. Employees with legitimate access to sensitive information can inadvertently expose data through careless actions or deliberate attempts to compromise security. Implementing strict access controls, monitoring systems for unusual behavior patterns, and fostering a culture of trust and accountability are essential in mitigating insider threats effectively.
Social Engineering and Manipulation
Cyber attackers often exploit human psychology through social engineering techniques to gain unauthorized access or extract sensitive information. Techniques such as pretexting, phishing, and baiting prey on human trust and curiosity, making individuals unwitting accomplices in security breaches. Educating employees about these tactics and conducting regular simulations can enhance resilience against social engineering attacks.
Complexity of Password Management
Weak password practices remain a persistent cybersecurity challenge. Many individuals reuse passwords across multiple accounts, use easily guessable passwords, or fail to update credentials regularly. Implementing strong password policies, including multifactor authentication (MFA) and password managers, can significantly reduce the risk of unauthorized access and credential theft.
Remote Work and BYOD Challenges
The rise of remote work and Bring Your Own Device (BYOD) policies introduces additional complexities to cybersecurity. Employees accessing corporate networks and data from personal devices may inadvertently expose sensitive information to security threats. Securing remote access through VPNs, endpoint protection software, and comprehensive BYOD policies is crucial in safeguarding organizational assets in a distributed workforce environment.
Cultural and Behavioral Influences
Organizational culture plays a pivotal role in shaping cybersecurity practices. A culture that prioritizes security awareness, encourages open communication about incidents, and holds individuals accountable for their actions fosters a collective responsibility for cybersecurity. Leadership support and endorsement of security initiatives are essential in cultivating a security-conscious culture throughout the organization.
Educating the Human Firewall
Educating employees about cybersecurity is essential for building a resilient defense against ever-evolving threats. This section explores the importance of educating the human firewall and outlines effective strategies for enhancing cybersecurity awareness and training within organizations.
Understanding the Role of the Human Firewall
In cybersecurity, the term “human firewall” refers to employees who serve as the first line of defense against malicious cyber activities. Empowering these individuals with knowledge and skills enables them to recognize and mitigate potential threats, thereby fortifying the organization’s overall security posture.
Importance of Cybersecurity Awareness
Cybersecurity awareness encompasses knowledge of common threats, understanding of security best practices, and recognition of potential risks in everyday digital interactions. Awareness initiatives aim to instill a culture of vigilance among employees, encouraging proactive behavior to safeguard sensitive information and mitigate cyber risks.
Components of Effective Training Programs
Effective cybersecurity training programs are comprehensive and tailored to the specific needs of the organization. Key components include:
Phishing Simulations: Simulating phishing attacks allows employees to experience and learn to identify suspicious emails, links, and attachments. These simulations provide immediate feedback and help reinforce safe email practices.
Secure Password Practices: Educating employees on creating strong passwords, using password managers, and implementing multi-factor authentication (MFA) strengthens access controls and reduces the risk of unauthorized account access.
Data Handling Procedures: Clear guidelines on data classification, encryption protocols, and secure data disposal practices ensure that sensitive information is protected throughout its lifecycle.
Social Engineering Awareness: Training sessions on social engineering tactics, such as pretexting and baiting, raise awareness about manipulative techniques used by cybercriminals to exploit human trust.
Promoting a Culture of Security
Fostering a culture of security is essential for sustaining cybersecurity awareness beyond training sessions. Key elements of a security-conscious culture include:
Leadership Commitment: Executive support and endorsement of cybersecurity initiatives demonstrate organizational commitment to prioritizing security as a strategic imperative.
Regular Communication: Open communication channels for reporting security incidents and sharing updates on emerging threats encourage transparency and collaboration among employees.
Continuous Learning: Cyber threats evolve rapidly, necessitating ongoing education and updates to ensure that employees remain informed about new attack vectors and defense strategies.
Measuring Effectiveness and Continuous Improvement
Assessing the effectiveness of cybersecurity training programs involves monitoring metrics such as phishing response rates, incident reporting frequency, and employee compliance with security policies. Regular evaluations and feedback mechanisms enable organizations to identify areas for improvement and refine training strategies accordingly.
Empowering Employees as Cyber Defenders
Ultimately, educating the human firewall empowers employees to take an active role in protecting organizational assets and maintaining cybersecurity resilience. By equipping individuals with the knowledge, skills, and awareness needed to recognize and respond to cyber threats effectively, organizations can mitigate risks, prevent security breaches, and uphold trust in an increasingly digital world.
The Role of Leadership and Culture
Leadership and organizational culture play pivotal roles in shaping an organization’s cybersecurity posture. This section explores how effective leadership and a security-conscious culture contribute to enhancing cybersecurity resilience and protecting sensitive information.
Leadership Commitment to Cybersecurity
Leadership commitment is essential in prioritizing cybersecurity as a strategic imperative within an organization. Executives and senior management must actively endorse and support cybersecurity initiatives by allocating resources, setting clear policies, and championing a culture of security awareness. When leaders demonstrate a commitment to cybersecurity, it permeates throughout the organization and reinforces the importance of protecting digital assets.
Setting the Tone from the Top
Effective cybersecurity leadership begins with setting the tone from the top. By establishing clear expectations and accountability for cybersecurity practices, leaders create a foundation for a security-conscious culture. Communicating the importance of cybersecurity in business operations and decision-making processes ensures that security considerations are integrated into organizational strategies and initiatives.
Building a Security-Conscious Culture
A security-conscious culture is cultivated through consistent communication, education, and reinforcement of cybersecurity principles across all levels of the organization. Key elements of a security-conscious culture include:
Employee Empowerment: Empowering employees to take ownership of cybersecurity responsibilities encourages proactive behavior and vigilance in safeguarding sensitive information.
Continuous Learning: Providing ongoing education and training on emerging threats, best practices, and compliance requirements ensures that employees remain informed and prepared to respond to evolving cyber risks.
Collaborative Approach: Encouraging collaboration between IT security teams, departments, and stakeholders promotes a unified approach to cybersecurity and facilitates effective incident response and mitigation efforts.
Integrating Security into Business Processes
Effective cybersecurity leadership integrates security considerations into business processes and decision-making frameworks. This includes incorporating cybersecurity risk assessments into project planning, implementing robust access controls and data protection measures, and ensuring compliance with regulatory requirements and industry standards. By aligning security objectives with business goals, organizations can effectively manage risks and protect valuable assets from cyber threats.
Promoting Accountability and Transparency
Leadership fosters accountability and transparency by establishing clear roles and responsibilities for cybersecurity within the organization. Implementing policies for incident reporting, monitoring, and response ensures prompt identification and resolution of security incidents. Transparent communication about cybersecurity incidents and lessons learned promotes organizational learning and continuous improvement in cybersecurity practices.
Leading by Example
Leadership effectiveness in cybersecurity is exemplified by leading by example. When executives and senior management demonstrate adherence to security policies, adherence to secure practices, and active participation in cybersecurity initiatives, they inspire confidence and commitment throughout the organization. By embodying a culture of security and resilience, leaders cultivate a shared commitment to protecting organizational assets and maintaining trust with stakeholders.
Human-Centric Cybersecurity Strategies
In the realm of cybersecurity, where technology and human behavior intersect, adopting human-centric strategies is crucial for mitigating risks and strengthening organizational defenses. This section explores the principles and practices of human-centric cybersecurity strategies aimed at protecting sensitive information and bolstering resilience against evolving cyber threats.
Understanding Human-Centric Cybersecurity
Human-centric cybersecurity recognizes that individuals within an organization are both its greatest asset and potential vulnerability. By focusing on human behavior, perceptions, and interactions with technology, organizations can develop tailored strategies that complement technical defenses and address the human factor in cybersecurity risks.
Empowering the Human Firewall
Empowering employees as proactive defenders, or the “human firewall,” involves equipping them with the knowledge, skills, and tools needed to recognize and respond to cyber threats effectively. Key components of empowering the human firewall include:
Cybersecurity Awareness Training: Providing comprehensive training on common threats, secure practices, and incident response protocols enables employees to make informed decisions and adopt vigilant behaviors in their daily activities.
Phishing Simulations and Awareness Campaigns: Conducting simulated phishing attacks and awareness campaigns educates employees about phishing tactics, enhances their ability to identify suspicious emails, and reinforces the importance of cautious online behavior.
Encouraging Reporting and Collaboration: Creating a culture that encourages employees to report security incidents promptly and collaborate with IT security teams fosters a collective responsibility for cybersecurity and facilitates swift incident response and mitigation efforts.
Behavioral Insights and Risk Mitigation
Applying behavioral insights to cybersecurity risk mitigation involves understanding human decision-making processes, cognitive biases, and social engineering tactics that influence user behavior. By leveraging these insights, organizations can develop targeted interventions and security controls that mitigate human-related risks effectively.
Designing User-Centered Security Measures
User-centered security measures prioritize usability and user experience while ensuring robust protection against cyber threats. Examples of user-centered security measures include:
Simple and Secure Authentication: Implementing multifactor authentication (MFA) and password managers simplifies authentication processes for users while enhancing security by requiring multiple forms of verification.
User-Friendly Security Policies: Establishing clear and concise security policies that are easy to understand and follow promotes compliance and reinforces secure behaviors among employees.
Feedback and Training Iterations: Iteratively improving training programs and security measures based on user feedback and evolving threats enhances their relevance and effectiveness in mitigating human-related risks.
Building a Culture of Security
Building a culture of security involves integrating cybersecurity awareness and practices into the organization’s culture, values, and daily operations. Key elements of a security-conscious culture include:
Leadership Commitment: Demonstrating leadership commitment to cybersecurity initiatives and allocating resources to support security awareness programs and infrastructure enhancements.
Continuous Education and Awareness: Providing ongoing education and awareness campaigns that keep employees informed about emerging threats, best practices, and regulatory requirements.
Recognition and Rewards: Recognizing and rewarding employees for exemplary cybersecurity practices and contributions to maintaining a secure organizational environment reinforces positive behaviors and encourages active participation in cybersecurity efforts.
Collaboration and Adaptation
Collaboration across departments, industries, and sectors facilitates knowledge-sharing and collective resilience against cyber threats. By fostering partnerships with external stakeholders, sharing threat intelligence, and collaborating on cybersecurity initiatives, organizations can enhance their ability to anticipate, detect, and respond to sophisticated cyber threats.
Beyond Compliance: Building a Resilient Culture
In today’s digital landscape, cybersecurity compliance is often viewed as a baseline requirement. However, true cybersecurity resilience goes beyond mere regulatory adherence. This section explores the importance of building a resilient cybersecurity culture that prioritizes proactive defense, continuous improvement, and organizational resilience beyond compliance obligations.
Understanding Cybersecurity Resilience
Cybersecurity resilience refers to an organization’s ability to anticipate, withstand, respond to, and recover from cyber incidents. It encompasses proactive measures, incident response capabilities, and a culture that fosters adaptability and continuous learning in the face of evolving cyber threats.
Emphasizing Proactive Defense
Building a resilient cybersecurity culture begins with a shift towards proactive defense strategies. Instead of reacting to incidents after they occur, organizations proactively identify and mitigate potential threats before they manifest into security breaches. This proactive approach involves:
Continuous Risk Assessment: Regularly assessing and identifying cybersecurity risks, vulnerabilities, and emerging threats to preemptively address potential security gaps.
Threat Intelligence and Monitoring: Leveraging threat intelligence sources and advanced monitoring tools to detect and respond to suspicious activities and anomalies in real-time.
Red Team Exercises: Conducting red team exercises to simulate real-world cyber attacks and test organizational defenses, incident response capabilities, and coordination among teams.
Cultivating a Culture of Awareness and Accountability
A resilient cybersecurity culture hinges on promoting awareness and accountability among all employees. Key components include:
Comprehensive Training Programs: Providing ongoing education and training on cybersecurity best practices, emerging threats, and incident response protocols to empower employees as proactive defenders.
Encouraging Reporting and Collaboration: Establishing channels for reporting security incidents, sharing threat intelligence, and fostering collaboration among departments, teams, and external stakeholders to enhance incident response and mitigation efforts.
Promoting Leadership Engagement: Demonstrating leadership commitment to cybersecurity initiatives, allocating resources for security improvements, and advocating for a security-first mindset throughout the organization.
Continuous Improvement and Adaptation
Cyber threats evolve rapidly, necessitating continuous improvement and adaptation of cybersecurity strategies. Organizations can enhance resilience by:
Incident Response Planning: Developing and regularly updating incident response plans that outline roles, responsibilities, and procedures for responding to and recovering from cyber incidents.
Post-Incident Analysis: Conducting thorough post-incident analyses to identify root causes, lessons learned, and opportunities for improving security controls, policies, and training programs.
Benchmarking and Industry Collaboration: Benchmarking cybersecurity practices against industry standards and collaborating with peer organizations and cybersecurity experts to share insights, best practices, and lessons learned.
Building Trust and Transparency
Building trust with stakeholders, customers, and partners is integral to maintaining a resilient cybersecurity posture. Transparency in communication about cybersecurity measures, incident response efforts, and data protection practices fosters trust and demonstrates commitment to safeguarding sensitive information.
Looking Ahead: Embracing Innovation and Collaboration
As organizations navigate the ever-evolving landscape of cybersecurity threats and challenges, the path forward lies in embracing innovation and collaboration to fortify defenses and foster resilience. This section explores the imperative of looking ahead, leveraging innovation, and promoting collaboration in advancing cybersecurity practices.
Embracing Innovation in Cybersecurity
Innovation is pivotal in staying ahead of cyber threats that continuously evolve in sophistication and scale. Embracing innovative technologies and methodologies allows organizations to enhance detection, response capabilities, and resilience against emerging cyber threats. Key areas of innovation include:
Artificial Intelligence and Machine Learning: Leveraging AI and ML algorithms for anomaly detection, predictive analytics, and automated threat response to augment human capabilities and accelerate incident response times.
Zero Trust Architecture: Implementing zero trust principles to verify every user and device accessing the network, thereby reducing the attack surface and mitigating lateral movement of threats within the network.
Cloud Security Solutions: Adopting advanced cloud security solutions that integrate robust encryption, access controls, and continuous monitoring to protect data and applications in cloud environments.
Promoting Collaboration Across Ecosystems
Cybersecurity challenges are increasingly complex and interconnected, necessitating collaboration across organizational boundaries, sectors, and geographic regions. Collaborative initiatives foster knowledge-sharing, threat intelligence exchange, and collective resilience against cyber threats. Key aspects of collaboration include:
Public-Private Partnerships: Engaging with government agencies, industry alliances, and cybersecurity organizations to share insights, best practices, and threat intelligence for collective defense.
Cross-Sector Collaboration: Collaborating with peers in different industries to understand sector-specific threats, vulnerabilities, and mitigation strategies, thereby strengthening sector-wide cybersecurity resilience.
Academic and Research Partnerships: Partnering with academic institutions and research organizations to drive innovation, conduct cybersecurity research, and develop next-generation cybersecurity technologies and methodologies.
Cultivating a Culture of Cybersecurity Innovation
Fostering a culture that encourages cybersecurity innovation involves empowering employees, fostering creativity, and embracing a mindset of continuous improvement. Organizations can cultivate an innovative cybersecurity culture by:
Encouraging Experimentation: Allowing teams to experiment with new technologies, tools, and approaches to cybersecurity to explore innovative solutions and best practices.
Rewarding Innovation: Recognizing and rewarding individuals and teams for innovative contributions to cybersecurity, encouraging a culture of creativity and proactive problem-solving.
Investing in Emerging Technologies: Investing in research and development of emerging technologies such as quantum-resistant cryptography, blockchain for cybersecurity, and secure hardware solutions to address future cyber threats.
Addressing Ethical and Regulatory Considerations
As organizations innovate in cybersecurity, addressing ethical considerations, privacy concerns, and regulatory requirements becomes paramount. Upholding ethical standards, respecting user privacy, and complying with relevant regulations ensure that cybersecurity innovations contribute positively to organizational resilience and stakeholder trust. | amr-saafan |
1,918,803 | Deploy Django to Azure - The Easy Way | The general perception is that deploying applications on the cloud is complicated, but that is not... | 0 | 2024-07-11T12:21:55 | https://dev.to/dilutewater/deploy-django-to-azure-the-easy-way-2h1n | webdev, django, cloud, azure | The general perception is that deploying applications on the cloud is complicated, but that is not always true. We have really easy ways to deploy stuff on the cloud as well. So I will be demonstrating how to deploy Django Webpps to Azure easily.
### Prerequisites
- Azure account
If you don’t have an azure account yet, no issues, you can signup for free and get 200USD credits for the first month [here](https://azure.microsoft.com/free/?wt.mc_id=studentamb_285271) .
If you are a student and don’t have a credit card, no worries. You can sign up for Azure for Students and get $100 credit for free using your student email ID [here](https://azure.microsoft.com/free/students/?wt.mc_id=studentamb_285271). (Can be renewed annually as long as you are a student)
- Hosted database
If you have a web app on Django that is dependent on a database, make sure it is using a hosted database instead of the default SQLite database. The hosted database can be anywhere, be it Azure itself, or you can use [neon.tech](http://neon.tech) as well.
- A django project ofcourse (😆)
For this blog, I will be using my demo app, which is in this repository: https://github.com/notnotrachit/django_todolist_demo_sample
Keep in mind that my sample app is not dependent on any database, its just using the client’s localstorage, if your app is dependent on the database then it is highly recommended to first add a hosted database and configure it accordingly.
You can refer to django’s docs for the same: [https://docs.djangoproject.com/en/5.0/ref/databases](https://docs.djangoproject.com/en/5.0/ref/databases)
If you are still facing issues, kindly let me know, I will make another blog regarding the same.
## Lets Deploy
### 1) Make a GitHub repository
Make sure you make a GitHub repository and make sure you push all your code to that repository. The repository can be public or private.
### 2) Head over to Azure Portal
Go to the azure portal’s home page at: [https://portal.azure.com/#home](https://portal.azure.com/#home?wt.mc_id=studentamb_285271)
You might see a different kind of homepage. Since I already have many things deployed, it shows up differently for me, but don’t worry—the process remains the same.
### 3) Creating an App Service
We will be deploying our webapp using Azure App Service. Azure App service is a really amazing service that we can use to very easily deploy our webapps to the cloud without worrying or configuring any infrastructure. It handles that automatically.
To create a service, search for 'App Service' in the top search bar and click on it.
You might see an empty list.
Now you need to click on `Create` and then select `Web App`
After that a long form type page will open up.
The first field is for the subscription. It will most likely be prefilled. If not, select your subscription from the dropdown.
Next is the resource group. You can leave it for now; it will be automatically created once we assign a name.
Now, we need to set a name for our web app. This name needs to be globally unique.
In publish option, leave code as selected.
In the Runtime Stack, select Python 3.10 or higher
Next you can select the region or leave it at the default as well.
Next, you will see under Pricing plan that a new Linux plan has already been created for you.
You can now select the pricing plan according to your needs. I am selecting Basic B1 for now.
Your final page will look something like this:
Now we need to go to the deployment tab.
Here you first need to enable Continuous deployment.
After enabling that, you need to Authorize your GitHub account by logging into your account.
Once you authorize that, you need to select the repository and branch.
Now click on `Review + create` .
You will be taken to the final page where you can review everything.
Finally, you can click on `Create` now.
Now it will takes few minutes to deploy your application on the cloud.
After the deployment has been done, you will see a page like this:
Now click on `Go to resource` .
It will take few seconds to load. After all data has been loaded, you will be able to see the domain.
You can try visiting it, but you will be greeted with an error.
Don’t worry, we will solve that as well.
The error is mainly because we haven’t really allowed our application to run on this domain.
To allow that, we would need to add this domain in our settings file.
### 4) Making Required Changes
We will now go to our editor and open the `settings.py` file.
Find `ALLOWED_HOSTS` in that file. By default, it will be an empty list. Or in some cases there might be previously added domains as well. Don’t worry.
Now, we need to add our domain in that list.
Kinda like this: `ALLOWED_HOSTS = ["rachit-todo.azurewebsites.net"]`
But make sure you enter your webapp’s domain.
Once done, save the file and commit it. Then once you push the commit to GitHub, Azure will automatically start deploying the webapp again. It will take few minutes to deploy.
Congratulations 🎉, You have succesfully deployed your Django Web App to Azure. 🎉
Give yourself a pat on the back
I hope you find this blog helpful.
Feel free to write any doubts in the comments. | dilutewater |
1,918,804 | How to become a Frontend Developer? | Frontend developers create exciting interfaces with which users interact, like the screen where you... | 0 | 2024-07-10T16:33:57 | https://dev.to/asachanfbd/how-to-become-a-frontend-developer-2kl9 | webdev, javascript, beginners, programming | Frontend developers create exciting interfaces with which users interact, like the screen where you are reading this article is designed by a frontend developer. It’s an exciting journey. As a frontend developer, you work with HTML, CSS & JavaScript(not Java) to create engaging user experiences. Whether starting from scratch or looking to upgrade your skill set, you will need a roadmap to guide your learning path so you don’t feel lost. Let’s start by understanding frontend development.
## What is Frontend Development?
Any website or web application you interact with, like google.com, facebook.com, reddit.com, etc, contains two major segments — Frontend & Backend. The user-facing part is the frontend & server-side part is known as the backend. Frontend development is focused on what user sees on the application and how do they interact with it. Frontend development involves:
- Converting designs to code.
- Structure the content using HTML
- Styling the content using CSS.
- Define the interactivity of the page using JavaScript(JS).
- Ensure that their code interacts with the backend seamlessly.
- Ensure pages are equally functional on different devices and browsers.
Frontend development is constantly evolving from just basic technologies like HTML, CSS, and JavaScript to more advanced frameworks that help you code faster and better. Popular frameworks and libraries such as React, Vue, Angular, Tailwind CSS, and Sass have become essential tools in a frontend developer’s toolkit. It’s crucial to know how to use at least one JavaScript framework. Although all these frameworks are based on JavaScript, their underlying design patterns and structures differ. Therefore, you will need to spend some time with documentation and tutorials to learn a new framework effectively.
## Roles and Responsibilities of a Frontend Developer
The frontend developers’ sole responsibility is to ensure the users have the best experience while using the website or web application. To fulfill that, frontend developers need to work on the below-mentioned areas of the frontend:
1. Convert designs to the code, that visually matches the design specifications.
2. Add interactivity to the web pages to make the page dynamic like forms, sliders, buttons, etc.
3. Ensure cross-browser compatibility & responsiveness of the application.
4. Ensure the performance and security of the application.
5. Maintain the code quality and version control the code.
To ensure you can fulfill all these responsibilities as a frontend developer, you will need to gain a specific skill set. Let’s dive deeper into these skills in the next section.
## Essential Skills and Technologies
Learning the essential skills and technologies can be overwhelming when you start something from scratch. It can be equally difficult for seasoned pros due to the vast technologies and resources available online. Let’s explore a learning path that can take you from basic knowledge to advanced levels, that you can follow with ease.
### Beginner Level
1. Basics — Learn the basics of HTML, CSS & JS and spend more time with JS.
2. Git — Learn how to use Git, its basics, and workable knowledge.
3. Package manager(npm) — Just get the basic idea about it.
4. Frontend Framework(react) — Get the basic level knowledge about creating a simple application with API interactions.
5. Testing your App(Jest) — Learn how to write test cases.
### Further Reading →
- [Basic Frontend Development Roadmap](https://roadmap.sh/frontend?r=frontend-beginner)
- [Learn Frontend Development with Tutorials, Blogs, Courses, Books & Official Docs](https://requestly.com/blog/afr-learn-frontend-development-with-free-tutorials-cheatsheets-docs/)
## Advanced Level
1. Basics of Internet — Learn about the basics of the Internet, how it works, domain, hosting, & DNS, etc.
2. HTML — Dive deeper into HTML, Accessibility, and SEO basics.
3. CSS — Responsive CSS, Sass CSS, CSS Frameworks like Tailwind CSS, Material UI, Bootstrap, etc.
4. JS — DOM Manipulation, AJAX, OOPS, Async.
5. VCS Hosting — Learn to work with VCS Hosting providers like GitHub, GitLab, BitBucket, etc.
6. Package Managers — Learn about other package managers like npm, yarn, etc.
7. JS Framework — Learn in depth about the framework of your choice.
8. Build Tools — Learn about automating tasks that make you efficient. Learn about linters & formatters.
9. Testing — Get hold of testing frameworks like Jest, Vitest, Cypress, etc.
10. Security Basics — Learn about security concepts like CORS, HTTPS, CSP, etc.
11. Server Side Rendering(SSR) — Learn about how SSR works and the depth of the issues that can arise if not implemented properly.
12. Static Site Generators(SSG) — Explore popular SSGs such as Gatsby, Jekyll, Hugo, and Next.js. Understand how SSGs improve performance, security, and scalability.
13. Progressive Web App(PWA) — Learn how to create web apps that work offline, load quickly, and feel like native apps using Service Workers and Web App Manifests.
14. Desktop Applications — Learn how to develop cross-platform desktop applications using frameworks like Electron and Tauri.
15. Mobile Applications — Discover how to build mobile apps for iOS and Android using frameworks like React Native and Flutter.
### Further Reading →
- Advance Frontend Development Roadmap
- Learn Advance Frontend Development with Tutorials, Blogs, Courses, Books & Official Docs
## Joining the Developer Community
Isolated learning is not always helpful; as humans, we need to connect with another human being to discuss, support, and network. Several online communities are available where you can connect with other developers with different experiences, technologies, and backgrounds. Connecting with others will give you a different perspective, be it on the problems you are facing or learning something new. Here are some of the platforms that you can explore:
1. Stack Overflow: A go-to platform for developers to ask questions and share knowledge. Contributing to discussions can help you learn faster and gain recognition.
2. Reddit: Subreddits like r/webdev, r/javascript, and r/reactjs are treasure troves of information and community interaction.
3. Dev.to: A community of software developers where you can read articles, share your knowledge, and get feedback from peers.
4. Twitter: Follow influential developers and tech companies. Participate in Twitter threads and discussions to stay updated with the latest trends.
5. LinkedIn: Connect with industry professionals, join relevant groups, and participate in discussions to expand your network.
6. YouTube: Subscribe to channels that offer tutorials, tech talks, and coding live streams.
7. Conferences: Attend events like React Conf, JSConf, and CSSConf to learn from industry leaders and network with like-minded individuals.
8. Meet-ups: Join local or virtual meet-ups through platforms. These gatherings provide opportunities to exchange ideas and collaborate on projects.
9. FreeCodeCamp: A nonprofit community that teaches you to code by building projects. It’s a supportive platform for learners at all stages.
10. CodePen and JSFiddle: Share your code snippets, demos, and get feedback from other developers.
11. Find a Mentor: Seek mentorship from experienced developers simply by asking someone whose work you admire.
12. Peer Programming: Engage in pair programming sessions to learn collaboratively and gain new perspectives.
## Open Source Contribution
- GitHub: Contribute to open-source projects to improve your coding skills and gain real-world experience. This is also a great way to get noticed by potential employers.
- GitLab: Explore and contribute to repositories hosted on GitLab. Engaging in open-source projects can enhance your problem-solving skills and collaborative abilities.
## Coding Challenges and Hackathons
- LeetCode, HackerRank, and CodeSignal: Enhance your problem-solving skills by participating in coding challenges.
- Hackathons: Participate in hackathons to work on projects, often in a team setting, which can boost your practical skills and provide networking opportunities.
Being active in the developer community can provide invaluable insights, encourage continuous learning, and open doors to new opportunities. By engaging with others, you not only expand your skills but also build a network that can support your career growth.
## Important Read
All the steps mentioned here are not intended to scare you away from becoming a frontend developer. Instead, use them to set milestones and achieve your final goal of becoming an expert frontend developer.
I have also started a GitHub repo to collate all the resources for frontend developers. It will be maintained actively to keep all the relevant information up-to-date. Here is the link → https://github.com/requestly/awesome-frontend-resources/
_Originally published at [requestly.com](https://requestly.com/blog/afr-how-to-become-a-frontend-developer/)_ | asachanfbd |
1,918,805 | Homeowners Find Help, Handymen Find Work: Building HomeSquad | As an aspiring software engineering student at Alx, I've been pouring my efforts into HomeSquad, a... | 0 | 2024-07-10T16:34:01 | https://dev.to/dawit_yifru_51528038a6adf/homeowners-find-help-handymen-find-work-building-homesquad-30hn | As an aspiring software engineering student at Alx, I've been pouring my efforts into HomeSquad, a project designed to bridge the gap between homeowners and skilled handymen. Inspired by Upwork's successful model of connecting freelancers with employers, HomeSquad caters specifically to local home improvement needs. Homeowners can browse for handymen or post jobs, receiving bids from qualified professionals. Conversely, handymen leverage the platform to discover available jobs through postings and direct homeowner offers.
As I navigated the demanding software engineering program at Alx for the past nine months, I often found myself browsing Upwork. It was a revelation – the power to connect with employers from across the globe, looking for someone like me(near future me) to help in with their projects. I could bid for a web developer job from India, a graphic job designer from Argentina, all within the comfort of my own home. It felt like the future of work, efficient and globalized.
But a nagging question kept popping up: what about the physical world we live in? Imagine this: your washing machine sounds like a distressed banshee in the middle of the night, threatening to flood your laundry room. Or your living room desperately needs a fresh coat of paint, but the thought of sifting through endless recommendations and unreliable leads is enough to make you want to grab a paintbrush yourself (even if you have zero artistic talent). Finding reliable help for these everyday tasks often involves a frustrating web of recommendations and unreliable leads.
It was this very pain point, hitting close to home (literally, in the case of the potential washing machine flood!), that sparked the idea for HomeSquad. Upwork's model was brilliant for freelancers in the digital realm, but what about the skilled handymen and home improvement specialists right in our own communities? Why couldn't we create a platform that bridged the gap, connecting homeowners like myself with the local talent we desperately needed? HomeSquad wouldn't just be convenient; it could empower both homeowners and handymen. Homeowners could escape the cycle of endless phone calls and unreliable recommendations. Handymen could ditch the flyers and unreliable leads, finally connecting with clients who genuinely needed their skills. The more I fleshed out the idea, the more passionate I became. It wasn't just about fixing leaky faucets – it was about creating a solution that would make countless lives easier.
## project Architecture
This is a simple MERN stack app with simple architecture
## Project Achivement
Since the projects main aim is connecting homeowners with skilled handymen in there local area, searching for a handyman can be done by applying filters like proximity and work category.
Homeowners then can choose from the result of handymen search for a person that fit their criteria. They can see the profile of the handyman his/her rating, work history and other information, to make a decision if they want to hire or offer a job for the handyman.
For handymen looking for work, they can also search for job postings that match their skillset and location of work to bid and submit proposal for the work.
## application features
- Both homeowners and handymen can signup and have a profile on HomeSquad.
- Users can customize their profile. Address info, describe their services(for handymen), and have a bio.
- Homeowners can search for handymen using filters like proximity, job category or by name.
- Homeowners can post a job, offer a job for a handymen, rate a handyman and add him/her to their favorites and award a job form a list of bid they get for their job posting.
- Handymen can search for a job post, bid on job postings and rate employers after job.
## Tech stack of the project
This project is built with the MERN stack
- React.js - for the frontend, the plan was to learn more about react while doing this project. it was a bit of steep learning curve than I expected.
- Material UI- for styling to give a professional feel to the app
- Express.js - For the backend, also JavaScript for the backend
- MongoDb - As a databas, I used MongoDb Atlas
- Passport.js with 'passport-local' strategy - for authentication and authorization.
- Firebase storage - to store profile images and other images
## Technical Challenges
The most frustrating challenge I faced happened after I deploy my demo project to render. While development I was running both my react development server and express server at localhost, I was able to authenticate without a problem and call api end points which need authorization without any problem. After deploying to Render I despite being able to authenticate I was not able to make subsequent authorized requests. I checked for cors settings, my axios config and my passport config but couldn't figure out the problem. After hours of googling I found out that the my browser is ignoring the Set-Cookie response header. And I found out that render uses a publicly listed domain for hosting sites and the browser black lists this publicly listed domains.
I get around this issue by deploying both the frontend and backend aps as one app and make the backend server the frontend app.
## what I learned
The main thing I learned from my journey building HomeSquad is pre planning is supper important. Even though learning by doing is a recommended way of learning, when working on a project with a deadline it's important to get enough knowledge before diving in.
I am a software engineering student with a passion to learn new technologies every chance I get. I will take the things I learn from this project and apply them to the next one and hopefully get better.
Project repository - https://github.com/daw22/HomeSquad-web-app
Deployed Project - https://homesquad-web-app.onrender.com/
Project landing page - https://homesquad.my.canva.site/
LinkedIn - https://www.linkedin.com/in/dawit-yifru-692aa11a5/
| dawit_yifru_51528038a6adf | |
1,918,806 | What is Selenium? Why do we use selenium for automation? | What is Selenium: Selenium is a automation tool used for web application testing. It is a... | 0 | 2024-07-10T16:34:16 | https://dev.to/pat28we/what-is-selenium-why-do-we-use-selenium-for-automation-hjn | pat28, task15 | What is Selenium:
>>>> Selenium is a automation tool used for web application testing. It is a popular open source testing tool. Selenium enables testers to write automated tests in various programming languages to test the functionality of web applications. It can be run in many different browsers and operating systems. It can be used to test the functionality of web applications on various browsers and operating systems. Selenium Software Testing is a great way to automate your web application testing.
**Components of Selenium
Selenium IDE:
Once the Selenium IDE is open, then you can start recording your tests by clicking on the "Record" button. Selenium will then begin recording all of your actions as you perform them in the browser.
Selenium WebDriver:
The Selenium WebDriver is an open-source tool used for automating web browser interaction from a user perspective. With it, you can write tests that simulate user interactions with a web application. It is available for many different programming languages, such as Java, C#, Python, and Perl.
Selenium Grid:
Selenium Grid is a crucial part of the overall Selenium testing suite and will enable you to execute your automated tests much faster. The Selenium Server is a part of Selenium Grid that can be installed locally on your device or hosted on a separate system/server.
Using Selenium for automation: The application testing can help you verify that your application is working correctly on different browsers and operating systems.
Testing is performed in several ways, including manual, automated, and performance testing. Automated testing is a popular approach for performing application testing, as it enables you to test your applications quickly and efficiently. Selenium Testing is a popular tool for automated testing, as it allows you to write tests in various programming languages and run them on many different browsers and operating systems.
Benefits of Selenium Testing:
⦁Efficient and accurate web application testing.
⦁The ability to test your web application on multiple browsers and operating systems.
⦁The ability to run more than one test at the same time.
The important things to keep in mind while writing Selenium tests:
⦁The goal of our selenium test is to find the bugs in your web application.
⦁your selenium test should be concise.
⦁You should only use the selenium web driver when you are sure about how to use the tools and scripts.
There are different types of Selenium tests that you can write. The most common types of selenium tests are
i. Unit Tests
ii. Functional Tests
iii. Integration Tests
iv. Regression Tests
v. End-to-End Tests
**Unit Tests
Unit Tests are the simplest type of Selenium tests. A Unit Test verifies that a single unit of code behaves as expected.
**Functional Test
When writing a Functional Test, you will first need to identify the different areas of your web application that you want to test. Once you have selected these areas, you can create a test case for each one. Once your test cases are written, you can run them using the WebDriver. Open your browser and go to the page where your tests are located. Then, enter your test case into the browser's address bar and press "Enter." Your Functional Test should automatically run, and you will be able to see if the code under test behaved as expected.
**Integration Tests
Integration Tests are used to test the integration between different parts of your web application. When writing an Integration Test, you should always keep in mind the following:
The goal of Integration Testing in Selenium is to find bugs in your web application that arise from integrating multiple components.
Your Integration Test should be short, and it should verify that all individual components work properly when integrated.
Regression Tests
Usually, regression suites include a huge number of test cases and it takes time and effort to execute them manually every time when a code change has been introduced. Hence almost every organization looks after automating regression test cases to reduce the time and effort.
**End-to-End Tests:
Once your test cases are written, you can run them using the WebDriver. Open your browser and go to the page where your tests are located. Then, enter your test case into the browser's address bar and press "Enter." Your End-to-End Test should automatically run, and you will be able to see if the code under test behaved as expected.
**Drawbacks of Selenium Automation Testing
a.High Test Maintenance
b.No Build-in Capabilities
c.No Reliable Tech Support
d.Learning Curve
| pat28we |
1,918,807 | Introduction to GCD (Grand Central Dispatch) | Apple Dispatch Framework Dispatch: Execute code concurrently on multicore hardware by... | 0 | 2024-07-10T16:35:46 | https://dev.to/vinaykumar0339/introduction-to-gcd-grand-central-dispatch-16b9 | swift, ios, threading | ## Apple Dispatch Framework
> Dispatch: Execute code concurrently on multicore hardware by submitting work to dispatch queues managed by the system.
1. Dispatch is also known as Grand Central Dispatch (GCD).
2. GCD is a queue-based API that allows executing closures on worker's pools in First-In-First-Out (FIFO) Order.
## What is GCD?
1. GCD manages the threads on which tasks are executed, relieving the developer of this responsibility, and ensuring tasks are run on the appropriate dispatch queue.
2. It is an abstraction layer on the queue.
3. GCD manages the collection of dispatch queues. The system executes the work submitted to those dispatch queues on the thread pool (worked tool).
4. GCD can execute the work in serially or concurrently. But always in FIFO Order.
## How Work is submitted to DispatchQueue.
1. Work can be submitted using `block of code` or `Closures`.
2. It can be done by Synchronously or Asynchronously.
3. Don't be confused between `Serially or Concurrently` and `Synchronously or Asynchronously` will explain them in short.
## Serially or Concurrently vs Synchronously or Asynchronously
> Serially: one task at a time while dispatching the work to the threads pool.
> Concurrently: multiple tasks at a time while dispatching the work to the threads pool but in FIFO Order from the Dispatch Queue.
> Synchronously: Which blocks the current thread till it completes the task.
> Asynchronously: Which will not block the current thread and execute the task separately.
`Serially/Concurrently` affects the DispatchQueue to which you're dispatching...
`Synchronously/Asynchronously` affects the current thread from which you are dispatching...
## Will see now how to dispatch a block of work into Queue using DispatchQueue.main
1. There is one main Thread DispatchQueue for an App which is DispatchQueue.main
2. In Ios main DispatchQueue is sereial queue by default.
## Dispatch an work using Asynchronous.
```swift
import Foundation
import PlaygroundSupport
PlaygroundPage.current.needsIndefiniteExecution = true
// Which will be dispatching the block of code in asynchronous which will not block the current thread.
DispatchQueue.main.async {
for i in 0...4 {
print("DispatchQueue.main async first block \(i)")
}
}
for i in 5...8 {
print("normal file execution \(i)")
}
DispatchQueue.main.async {
print("DispatchQueue.main async second block")
}
// Output.
// normal file execution 5
// normal file execution 6
// normal file execution 7
// normal file execution 8
// DispatchQueue.main async first block 0
// DispatchQueue.main async first block 1
// DispatchQueue.main async first block 2
// DispatchQueue.main async first block 3
// DispatchQueue.main async first block 4
// DispatchQueue.main async second block
```
## Explanation for the above code
1) 5, 6, 7, 8 will be print first because we are dispatching the code in asynchorous manner so main code execution will not be blocked.
2) 0, 1, 2, 3, 4 will be print next because there is no any other code to run in the current thread. so it start executing the async code because DispatchQueue.main is serial queue so it start printing `DispatchQueue.main async first block \(i)` and then `DispatchQueue.main async second block`
## Benifits of using GCD Over Plain Threads Api
### Abstraction of Complexity:
* GCD abstracts away the complexities of managing threads directly.
* You work with queues and tasks, making it easier to manage concurrency.
### Efficient Resource Management:
* GCD manages a pool of threads internally by taking most of the developer works for managing resources.
* Reduces overhead from thread creation and destruction, optimizing performance
### Quality of Service (QoS) Support: (Will talk about this in depth in upcoming posts)
* Supports QoS attributes (e.g., background, utility, user-initiated) to prioritize tasks
* Adapts dynamically to system load, ensuring optimal task scheduling
## Conclusion
In summary, GCD simplifies concurrency management by abstracting thread handling, optimizing resource usage, ensuring safety, promoting asynchronous execution, and integrating well with Swift's ecosystem. It remains a preferred choice for efficient and scalable concurrent programming in iOS, macOS, and beyond | vinaykumar0339 |
1,918,808 | Understanding Node Affinity in Kubernetes | Welcome back to our Kubernetes series! In this instalment, we delve into an essential scheduling... | 0 | 2024-07-10T16:39:34 | https://dev.to/jensen1806/understanding-node-affinity-in-kubernetes-3l5j | kubernetes, docker, devops, containers | Welcome back to our Kubernetes series! In this instalment, we delve into an essential scheduling concept: Node Affinity. Node Affinity allows Kubernetes to schedule pods based on node labels, ensuring specific workloads run on designated nodes.
### Recap: Taints and Tolerations
Previously, we explored Taints and Tolerations, which allow nodes to repel or accept pods based on certain conditions like hardware constraints or other node attributes. However, Taints and Tolerations have limitations when it comes to specifying multiple conditions or ensuring pods are scheduled on specific nodes.
### Introducing Node Affinity
Node Affinity addresses these limitations by enabling Kubernetes to schedule pods onto nodes that match specified labels. Let's break down how Node Affinity works:
#### Matching Pods with Node Labels
Consider a scenario with three nodes labeled based on their disk types:
- Node 1: disk=HDD
- Node 2: disk=SSD
- Node 3: disk=SSD
We want to ensure:
- HDD-intensive workloads run only on Node 1.
- SSD-intensive workloads are scheduled on Node 2 or Node 3.
#### Affinity Rules
Node Affinity uses rules like requiredDuringSchedulingIgnoredDuringExecution and preferredDuringSchedulingIgnoredDuringExecution to define scheduling behaviours:
- **requiredDuringSchedulingIgnoredDuringExecution**: Ensures a pod is only scheduled if a matching node label is found during scheduling.
- **preferredDuringSchedulingIgnoredDuringExecution**: Prefers to schedule a pod on a node with matching labels but can schedule on other nodes if no match is found.
### Example: YAML Configuration
```
apiVersion: v1
kind: Pod
metadata:
name: example-pod
spec:
containers:
- name: app
image: nginx
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: disk
operator: In
values:
- SSD
- HDD
```
In this example, the pod example-pod is configured to run on nodes labeled with disk=SSD or disk=SDD.
#### Practical Demo
We applied this configuration and observed how Kubernetes scheduled pods based on node labels. Even when labels were modified post-scheduling, existing pods remained unaffected, showcasing Node Affinity's robustness in maintaining pod placement integrity.
### Key Differences from Taints and Tolerations
While Taints and Tolerations focus on node acceptance or rejection based on predefined conditions, Node Affinity ensures pods are scheduled on nodes that specifically match given criteria. This distinction is crucial for workload optimization and resource allocation in Kubernetes clusters.
## Conclusion
Node Affinity enhances Kubernetes scheduling capabilities by allowing fine-grained control over pod placement based on node attributes. Understanding and effectively utilizing Node Affinity can significantly improve workload performance and cluster efficiency.
Stay tuned for our next installment, where we'll explore Kubernetes resource requests and limits—a critical aspect of optimizing resource utilization in your Kubernetes deployments.
For further reference, check out the detailed YouTube video here:
{% embed https://www.youtube.com/watch?v=5vimzBRnoDk&list=WL&index=21&t=1s %} | jensen1806 |
1,918,809 | Understanding GRU Networks | Gated Recurrent Units (GRUs) are a type of recurrent neural network (RNN) architecture that have... | 27,893 | 2024-07-10T16:41:09 | https://dev.to/monish3004/understanding-gru-networks-aak | deeplearning, computerscience, nlp, beginners | Gated Recurrent Units (GRUs) are a type of recurrent neural network (RNN) architecture that have become increasingly popular for sequence modeling tasks. Introduced by Kyunghyun Cho et al. in 2014, GRUs aim to solve some of the vanishing gradient problems associated with traditional RNNs while maintaining a simpler structure compared to Long Short-Term Memory (LSTM) networks.
**Why GRUs?**
GRUs address the limitations of standard RNNs, such as difficulty in learning long-term dependencies due to vanishing gradients. They offer a simpler alternative to LSTMs, with fewer parameters and gates, which often leads to faster training and potentially better performance on certain tasks.
**Architecture of GRUs**
GRUs consist of two main gates: the reset gate and the update gate. These gates control the flow of information and allow the network to retain or forget information as needed.
1. **Reset Gate**
The reset gate determines how much of the past information to forget. It decides whether to ignore the previous hidden state when calculating the current hidden state.
2. **Update Gate**
The update gate determines how much of the past information to pass along to the future. It decides how much of the new hidden state will come from the previous hidden state and how much from the current input.
3. **Current Memory Content**
The current memory content combines the new input and the previous hidden state, scaled by the reset gate.
4. **Final Hidden State**
The final hidden state is a combination of the previous hidden state and the current memory content, controlled by the update gate.
**Advantages of GRUs**
1. **Simpler Architecture**: With fewer gates and parameters than LSTMs, GRUs are easier to implement and train.
2. **Efficiency**: GRUs often converge faster and require less computational resources.
3. **Performance**: In many cases, GRUs perform on par with or even better than LSTMs on specific tasks.
**When to Use GRUs**
GRUs are well-suited for tasks involving sequential data, such as:
- **Natural Language Processing**: Text generation, language translation, and sentiment analysis.
- **Time Series Prediction**: Stock market predictions, weather forecasting, and anomaly detection.
- **Speech Recognition**: Recognizing and transcribing spoken words.
**Conclusion**
Gated Recurrent Units offer an efficient and powerful alternative to traditional RNNs and LSTMs. Their simpler architecture, combined with their ability to handle long-term dependencies, makes them an attractive choice for many sequence modeling tasks. By understanding the inner workings of GRUs, you can better leverage their strengths to build robust and effective neural networks for a variety of applications. | monish3004 |
1,918,810 | Is the VCR plugged in? Common Sense Troubleshooting For Web Devs | The summers of 6th through 8th grade were incredible. I grew up in North Lake Tahoe and would ride... | 0 | 2024-07-10T16:41:17 | https://dev.to/cjav_dev/is-the-vcr-plugged-in-common-sense-troubleshooting-for-web-devs-78o | webdev, beginners, programming, tutorial | The summers of 6th through 8th grade were incredible. I grew up in North Lake Tahoe and would ride bikes with my brothers and neighborhood kids from daybreak til the streetlights came on. We'd make home videos of us attempting BMX tricks (think Baby-Gap version of the X-Games). We recorded using our family's mini-DV camcorder.
Dad would help connect the camcorder to the VCR and the TV and walk through the labyrinth of VRC remote buttons and menus so that we could transfer the videos to VHS. In the summer of 1997, my dad shared a critically important process with me that I've never forgotten and has been an invaluable framework for troubleshooting ever since. He said, "If the VCR isn't working, you should first check if it's plugged in. Start from the most foundational component (the wall receptacle), then follow the path to the next component in the chain. Ideally, isolating each component and link will ensure all pieces are working as expected. Intuit how the underlying systems work and how they interact."
See, Dad is a genius-level engineer. He ran a commercial refrigeration and appliance business for my entire childhood (which I was lucky enough to learn from). He built houses from the ground up, reincarnated cars, and was a master of all things mechanical, electrical, woodworking, and (to his chagrin) plumbing.
Customers would call and say, "My ice machine isn't making ice." Several times I'd go on jobs with him and watch him use a multimeter to test the voltages at the wall, the switch, the fans, the compressors. Is the electrical all working as expected? What about the water supply? He'd check the inlet valves, pressure, float, and door switches. Is the evaporator working as expected? Are the evaporator coils all frosty, are the condenser coils transferring heat as expected, and so-on. What about the control board? He'd isolate the problem to a single component and replace or repair it. He'd test the system and iterate until it harvested ice as expected.
Once you've isolated a specific component, you can repeat the same process for it itself. Is the component getting power? Is it receiving and/or sending the right signals that are compatible with the other components in the system? Is it damaged?
## Tools for Troubleshooting
Dad has a truck full of tools: multimeters, manifold gauges, infrared thermometers (laser guns!). You too, will benefit from collecting tools to help you isolate and identify problems.
In 2011, I spent the year in Afghanistan building tactical networks that ran over fiber optics, satellite, ethernet, and radio.
A lot of my job was configuring Cisco routers and switches. The best troubleshooting tools for that job were `ping`, `traceroute`, `nslookup`, `dig` and `show` commands. I'd start by pinging the next hop, the next hop, and the next hop. If the pings were successful, I'd traceroute to the destination to see if the packets followed the expected path. If the packets were not following the expected path, I'd use the show commands to inspect the routing tables and check if RIP, OSPF, and BGP were doing their job correctly. Check the interface status and the logs.
**For web development, the best troubleshooting tools are:**
**1. Logs and Print Statements**:
Logs are the most important tool for troubleshooting. Logs are like the black box on an airplane. They record everything that happens in your application. They can tell you what happened, when, and sometimes why it happened. Logs are the first place you should look when something goes wrong. One school of thought is to add tons of print statements to your code to help you understand what's happening. Learn `puts` `p` and `JSON.pretty_generate` in Ruby and the `console.log` in JavaScript to print out the state of variables and the code flow. Also, use your own logging and learn about log levels to get the right information into your production logs.
**2. Debuggers**:
Debuggers are tools that allow you to pause the execution of your code and inspect the state of your application. You can set breakpoints in your code and step through it line by line. Debuggers are useful for understanding how your code executes and identifying the bugs' root cause. Some like print statements, and some like debuggers. I like both. I'm kinda old school for debugging ruby, and I like to use `byebug`. In JavaScript, I like to use `debugger` or the browser's built-in break statements.
Use `step`, `next`, `continue`, `p` and `puts` and `l=` to print where you are again:
```ruby
require 'byebug'
def sum(a, b)
byebug
a + b
end
def subtract(a, b)
a - b
end
def multiply(a, b)
a * b
end
def my_cool_math_thing(a, b)
byebug
answer1 = sum(a, b)
answer1 + subtract(a, b) + multiply(a, b)
end
my_cool_math_thing(1, 2)
```
**3. Browser Developer Tools**: Browser developer tools are built into every modern web browser. They allow you to inspect the HTML, CSS, and JavaScript of a web page, as well as monitor network requests, view console logs, and debug JavaScript. Browser developer tools are essential for debugging client-side issues.
**4. REPLs**: REPL stands for Read-Eval-Print Loop. A REPL is an interactive programming environment that allows you to write and execute code in real time. REPLs are useful for quickly testing code snippets and exploring language features. You can use the console in your browser's developer tools as a client side REPL and your server side framework likely has a built in REPL (e.g. `rails console`). Using the REPL, you can experiment with bits of code quickly to see how they behave.
**5. Automated Tests**: Unit tests are automated tests that verify the behavior of a small unit of code in isolation. I like to write unit tests for every bug reported by a user. This way, I can reproduce the bug in a controlled environment and verify that the fix works as expected and that we wont see a regression. There are many different JavaScript test frameworks like [Jest](https://jestjs.io/), [cypress](https://go.cypress.io/), [mocha](https://mochajs.org/), and [jasmine](https://jasmine.github.io/). We use [Rspec](https://rspec.info/) and [Minitest](https://github.com/minitest/minitest) for unit and integration tests in our rails application.
[**6. Git Bisect**](https://git-scm.com/docs/git-bisect): I've only used this a handful of times in my career, but it can be very handy to identify when a bug was introduced. You start by telling git that the current commit is bad and an earlier commit is good. Git will then checkout a commit in the middle of the range. You test the commit and tell git if it's good or bad. Git will then checkout a commit halfway between the last and current commit. You repeat this process until you find the commit that introduced the bug. It's sort of binary search through history to find a bug.
**7. Static Code Analysis**: Static code analysis tools analyze your code without executing it. They can identify potential bugs, security vulnerabilities, and code smells. I like to use linters like [Rubocop](https://rubocop.org/) and [ESLint](https://eslint.org/) to catch syntax errors and enforce code style.
**8. Error Messages and Stack Traces**: Unfortunately, most error messages look like the villain in a bad action movie. They are scary! Big red letters, often with cryptic language. But, error messages are your best friend. They tell you what went wrong and where it went wrong. They can be cryptic, but they often contain valuable information that can help you identify the root cause of a bug. Stack traces are like a map of the failed code execution path. They show you the sequence of function calls that led to the error. This is your map of all the components that need to be checked -- in order! Usually, I trust that third-party code is working as expected (that's like the wall receptacle, power is probably on, but sometimes you need to check the breaker panel). Do yourself a favor and set up some error monitoring and alerting tools in production so you know when an error happens for a user. We use Sentry at work and I've used Rollbar in the past.
**9. Database Management Tools**: If you're working with a database, you'll have tools to manage and query the database. Web dev is often CRUD (Create, Read, Update, Delete) data from a database. The database is often the lowest common denominator in the stack. You can use a database management tool to inspect the data in the database, run queries, and check for errors. You can also use the database management tool to check the status of the database server and ensure that it's running as expected. Learn enough SQL to be able to answer some basic questions -- (I still recommend [SQL Zoo!](https://sqlzoo.net/wiki/SQL_Tutorial)). If you're using rails `rails dbconsole` is a shortcut to log into your database interface and start querying. Recently, I've been wrestling with some Redis memory issues and have found the `redis-cli` to be invaluable and have learned just enough to be dangerous.
- How many users have an email with `test` in it?
- What does the `weather_days` table look like?
Some `redis-cli` basics, for ya!
**10. LLMs and StackOverflow**: Learning to ask the right questions of your search engine (Google, GitHub, or StackOverflow) or LLM chat tool like ChatGPT or Claude can help you find solutions faster. The more mature your stack, the more likely there are to be other people who've run into the exact same problem you have and asked about it or created issues on GitHub. As [Jon Stuart jokes about prompt engineering](https://www.facebook.com/thedailyshow/videos/jon-stewart-on-ai-as-a-replacement-tool/267769313072024/), it can pay to become a good "types-question-guy."
## Combat Lifesaver Course
In Army basic training, we learned several basic life-saving skills like CPR, applying tourniquets, and treating for shock. In the heat of the moment, it's easy to forget the basics and get lost in the chaos. Many topics in basic training use absurdly simple frameworks so that you can remember them in the heat of the moment. For example, when you find a casualty, you're supposed to remember the ABCs: Airway, Breathing, Circulation.
**A**. Check their airway, is it clear? If not, clear it.
**B**. Check their breathing, are they breathing? If not, give them mouth-to-mouth.
**C**. Check their circulation, do they have a pulse? If not, stop the bleeding (apply a tourniquet) and elevate their legs.
Simple frameworks are easy to remember and can be applied in the heat of the moment. They're also easy to teach and can be applied to various problems. When your site goes down, what are your ABCs?
**Side rant**: shouldn’t basic life-saving courses be free to the public?! Someone make that happen!
## Accelerated Learning Through Troubleshooting
In software engineering, encountering and resolving bugs is not merely an inconvenient part of the development process; it is a critical component that drives rapid skill enhancement and professional growth. I have a theory that the frequency and variety of bugs you encounter directly correlate with the speed at which a software engineer improves. My weaker theory is that this also leads to writing better, more durable code.
As an App Academy instructor, I was lucky enough to accelerate my learning by supporting web development students. While working through the curriculum, they would encounter new bugs and errors that would stump them and other TAs, and I'd get to help find and solve bugs. This experience multiplexed the opportunities for me to encounter new and different (sometimes creative and bewildering) errors and spend all day troubleshooting instead of simply building on my own and only encountering the bugs I created. I learned 6-8 times as much in about 2 years than I had in the previous 5 combined.
Diverse problems required varied approaches and solutions (e.g. comment out half the code), which broadened my problem-solving toolkit.
It deepened my understanding -- I _had_ to understand how different components interact, leading to a more profound grasp of the entire stack.
I learned to anticipate potential issues and write more robust, maintainable code to avoid similar bugs in the future.
The experience built intuition and pattern recognition, helping identify root causes quickly.
For instance, do you want to know the most common root cause for bugs in web applications? SPELLNIG!
Because spelling is one of the most common errors, I prefer to use `barewords` over `@instance_variables` in Ruby ([thanks Avdi](https://graceful.dev/courses/the-freebies/modules/ruby-language/topic/episode-004-barewords/)). This way, if I misspell a variable, Ruby will raise an error instead of creating a new variable. Also, a decent reason to use TypeScript over JavaScript and linting tools like [ESLint](https://www.npmjs.com/package/eslint-plugin-spellcheck). This is a simple example of how I've learned to write more robust code through troubleshooting.
## Tips and Tricks
Walk the path of the request and response - this is the way. Start from the most foundational component (the client) and follow the path to the next component in the chain (the server). Ideally, isolate each component and link to ensure all pieces work as expected. Intuit how the underlying systems work and how they interact with each other.
**1. Client**: Is the client sending the request as expected? Is the request being sent to the correct endpoint? Is the request being sent with the correct headers and body?
- Make a change to the client code, refresh the page, and verify that you’re changing the code you think you are. (common error is making a change locally but then looking at prod or something).
- Add console log statements to the top of the JavaScript files you expect to be executing, are those printed to the dev console?
- Is the code to execute the request as expected? Use the browser's debugger to find the code that makes the request. Set breakpoints and inspect the request object before it's sent.
- Use the browser's developer tools to inspect the request and response.
- Look in the server logs to see if the request is being received.
**2. Server**: Is the server receiving the request as expected? Is the server sending the response as expected?
- Look in the server logs to see if the request and the expected URL, headers, and request body are being received.
- Is the expected server code executing?
- Is the route defined that knows how to pick which code should execute based on the request path?
- Is the code that should be executing actually executing?
**3. Anywhere:**
- Follow the control flow, is the execution following the right branches of conditionals?
- Are methods being called with the expected arguments?
- Did the function return the expected value?
- Are the types of objects the expected types?
- Are responses from APIs and Libraries formatted as your code expects?
- Are credentials and constants and environments what you expect?
- Should the message be passed to the class or an instance?
- Is this pointing at what you expect in JavaScript?
## Call Your Shots
In pool (like the billiards kind), the badasses call their shots by naming which pocket and which balls will fall _before_ they hit the cue ball. In software engineering, you should say what you expect to happen before you refresh the page or run a test.
If all this sounds obvious, you've been blessed with a good teacher at some point. But, it's also easy to forget when you're in the thick of a problem. It's easy to forget to check if the VCR is plugged in.
| cjav_dev |
1,918,811 | Introduction to React.js | React.js is a popular JavaScript library developed by Facebook for building user interfaces,... | 0 | 2024-07-10T16:43:05 | https://dev.to/nagabhushan_adiga_a383471/introduction-to-reactjs-2km5 | react, reactjsdevelopment, webdev, javascript |
React.js is a popular JavaScript library developed by Facebook for building user interfaces, particularly single-page applications. It allows developers to create large web applications that can update and render efficiently in response to data changes. React focuses on building reusable components, which can be thought of as custom, self-contained HTML elements that manage their own state.
**Key Features of React.js**
**Component-Based:** React applications are built using components, which encapsulate logic, structure, and style.
**Declarative:** React makes it easy to design interactive UIs by describing how your application should look at any given point in time.
**Virtual DOM:** React uses a virtual DOM to minimize the cost of DOM manipulation, leading to better performance.
**Unidirectional Data Flow:** Data in React flows in a single direction, making it easier to understand and debug.
**Setting Up a React Project**
To start a React project, you’ll need Node.js and npm (Node Package Manager) installed. You can use Create React App, a command-line tool that sets up a new React project with a sensible default configuration.
**Steps to Create a New React App**
**Install Node.js and npm:** You can download and install Node.js from the official website. npm is included with Node.js.
**Create a New React App:** Use the Create React App tool to set up your project.
```
`npx create-react-app my-react-app`
```
**Navigate to Your Project Directory:**
```
cd my-react-app
```
**Start the Development Server:**
```
npm start
```
Your application should now be running on http://localhost:3000.
Project Folder Structure
Here’s a typical folder structure of a React project created with Create React App:
```
my-react-app/
├── node_modules/
├── public/
│ ├── favicon.ico
│ ├── index.html
│ └── manifest.json
├── src/
│ ├── components/
│ │ ├── App.js
│ │ ├── App.css
│ │ ├── index.js
│ │ └── index.css
│ ├── assets/
│ │ ├── images/
│ │ └── styles/
│ ├── utils/
│ ├── App.js
│ ├── App.css
│ ├── index.js
│ ├── index.css
│ └── serviceWorker.js
├── .gitignore
├── package.json
├── README.md
└── yarn.lock
```
**Explanation of Key Folders and Files**
**node_modules/:** Contains all the dependencies and sub-dependencies of the project.
**public/:** Contains the public assets of the application. The most important file here is index.html, which is the entry point for the web application.
**src/:** Contains the source code of the application.
**components/:** Contains React components. You can create separate folders for each component if needed.
**assets/:** Contains static assets like images and styles.
**utils/:** Contains utility functions or modules that can be reused across the application.
**App.js:** The main component of the application.
**index.js:** The JavaScript entry point for the React application.
**serviceWorker.js:** Optional service worker for offline capabilities.
**Creating Your First Component**
A React component can be a function or a class. Here’s an example of a simple functional component:
```
// src/components/HelloWorld.js
`import React from 'react';
const HelloWorld = () => {
return (
<div>
<h1>Hello, World!</h1>
</div>
);
};`
export default HelloWorld;
```
To use this component, you would import and include it in your App.js file:
```
// src/App.js
import React from 'react';
import HelloWorld from './components/HelloWorld';
function App() {
return (
<div className="App">
<HelloWorld />
</div>
);
}
export default App;
```
**Conclusion**
React.js is a powerful library for building user interfaces with a component-based architecture. By setting up a project using Create React App and organizing your files logically, you can build scalable and maintainable web applications. Start experimenting with creating your components and explore more advanced topics like state management, hooks, and context to harness the full potential of React.
| nagabhushan_adiga_a383471 |
1,918,812 | You must know about principle of z-index | Introduction Hi, I'm (flitter)[https://flitter.dev] maintainer and recently I provide... | 0 | 2024-07-10T16:46:23 | https://dev.to/moondaeseung/you-must-know-about-principle-of-z-index-4akj | ## **Introduction**
Hi, I'm (flitter)[https://flitter.dev] maintainer and recently I provide z-index widget.
This article explores the workings of the z-index property and how to implement it within SVGs.
### **Intended Audience**
- Those struggling with z-index not applying as expected.
- Anyone unfamiliar with the concept of stacking context.
- Individuals looking to implement z-index directly in SVG.
- People interested in adding z-index behavior to charts or diagrams.
### **Keywords**
- [z-index](https://developer.mozilla.org/en-US/docs/Web/CSS/z-index)
- [stacking context](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_positioned_layout/Understanding_z_index/The_stacking_context)
# **What is Z-Index?**
The z-index is a CSS property that adjusts the vertical stacking order of elements. Its default value is **`auto`**, equivalent to **`z-index: 0`**. However, **`z-index: 0`** creates a new stacking context, altering the precedence for child elements differently from **`z-index: auto`**. A stacking context will be explained further below.
### **Typical Z Order**
In the absence of a specified z-index, the vertical order of stack elements matches the order in which DOM nodes are rendered. This ordering is consistent with a Depth-First Search (DFS), where elements rendered later take precedence over those rendered earlier. For example, a pink box drawn over an orange box is higher in the stack..
### **Adding Z Elements**
Assigning a z-index of 9999 to a purple circle places it at the top, as shown in the illustration. Despite the pink box being the last reach in a depth-first search, the z-index rearrangement prioritizes the purple circle to be drawn last.
# **What is a Stacking Context?**
Stacking context, along with an element's z-index, determines its vertical stack priority. Simply put, think of a stacking context as an array of a parent's z-index values. Even if a child element has a high z-index, it can still be placed lower in priority due to its stacking context.
As shown in the illustration above, despite the purple circle having a z-index of 9999, it is obscured by the pink box below because it belongs to a new stacking context created by its parent's z-index of 0.
- Situations Creating Stacking Context
Stacking context can form not only when a parent element's z-index is specified but also under the following conditions:
- Root element of the document (`<html>`).
- Element with a [`position`](https://developer.mozilla.org/en-US/docs/Web/CSS/position) value `absolute` or `relative` and [`z-index`](https://developer.mozilla.org/en-US/docs/Web/CSS/z-index) value other than `auto`.
- Element with a [`position`](https://developer.mozilla.org/en-US/docs/Web/CSS/position) value `fixed` or `sticky` (sticky for all mobile browsers, but not older desktop browsers).
- Element with a [`container-type`](https://developer.mozilla.org/en-US/docs/Web/CSS/container-type) value `size` or `inline-size` set, intended for [container queries](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_container_queries).
- Element that is a child of a [flex](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_flexible_box_layout/Basic_concepts_of_flexbox) container, with [`z-index`](https://developer.mozilla.org/en-US/docs/Web/CSS/z-index) value other than `auto`.
- Element that is a child of a [`grid`](https://developer.mozilla.org/en-US/docs/Web/CSS/grid) container, with [`z-index`](https://developer.mozilla.org/en-US/docs/Web/CSS/z-index) value other than `auto`.
- Element with an [`opacity`](https://developer.mozilla.org/en-US/docs/Web/CSS/opacity) value less than `1` (See [the specification for opacity](https://www.w3.org/TR/css-color-3/#transparency)).
- Element with a [`mix-blend-mode`](https://developer.mozilla.org/en-US/docs/Web/CSS/mix-blend-mode) value other than `normal`.
- Element with any of the following properties with value other than `none`:
- [`transform`](https://developer.mozilla.org/en-US/docs/Web/CSS/transform)
- [`filter`](https://developer.mozilla.org/en-US/docs/Web/CSS/filter)
- [`backdrop-filter`](https://developer.mozilla.org/en-US/docs/Web/CSS/backdrop-filter)
- [`perspective`](https://developer.mozilla.org/en-US/docs/Web/CSS/perspective)
- [`clip-path`](https://developer.mozilla.org/en-US/docs/Web/CSS/clip-path)
- [`mask`](https://developer.mozilla.org/en-US/docs/Web/CSS/mask) / [`mask-image`](https://developer.mozilla.org/en-US/docs/Web/CSS/mask-image) / [`mask-border`](https://developer.mozilla.org/en-US/docs/Web/CSS/mask-border)
- Element with an [`isolation`](https://developer.mozilla.org/en-US/docs/Web/CSS/isolation) value `isolate`.
- Element with a [`will-change`](https://developer.mozilla.org/en-US/docs/Web/CSS/will-change) value specifying any property that would create a stacking context on non-initial value (see [this post](https://dev.opera.com/articles/css-will-change-property/)).
- Element with a [`contain`](https://developer.mozilla.org/en-US/docs/Web/CSS/contain) value of `layout`, or `paint`, or a composite value that includes either of them (i.e. `contain: strict`, `contain: content`).
- Element placed into the [top layer](https://developer.mozilla.org/en-US/docs/Glossary/Top_layer) and its corresponding [`::backdrop`](https://developer.mozilla.org/en-US/docs/Web/CSS/::backdrop). Examples include [fullscreen](https://developer.mozilla.org/en-US/docs/Web/API/Fullscreen_API) and [popover](https://developer.mozilla.org/en-US/docs/Web/API/Popover_API) elements.
## **Stacking Context Operational Rules**
Let's delve into how stacking contexts are formed and influence the order in which nodes are drawn, explained step by step. For those interested in directly jumping to the implementation logic of z-index, please proceed to the next section titled "Z-Index Implementation Logic."
The illustration above represents a schematic of the DOM structure. The numbers on each node denote the order they are visited in a preorder traversal. Nodes 2 and 4 possess distinct stacking contexts. Node 3 inherits the **stacking context** from node 2.
Comparing nodes 2 and 4, even though node 4 has the same z-index, its higher node number grants it priority in the stacking order. Since node 3 inherits the **stacking context** from node 2, no matter how high its z-index, it will be ranked lower in the stacking order compared to node 4.
### Example: Complicated Stacking Context
In the illustration, nodes 3 and 4 are situated below node 2, and node 7 is located beneath node 6. Notably, there exists a stacking context with a z-index of -1, as seen with node 6, and there are nodes, like node 5, that do not belong to any stacking context. Nodes without a separate stacking context are considered to have a z-index of 0.
The nodes can be divided according to the drawing order as shown above. Node 1 takes precedence over nodes 6 and 7 in the vertical layer, and node 5 is superior to nodes 2, 3, and 4 in the vertical layer. Since nodes 3 and 4 are both below node 2, node 3 with the higher z-index takes precedence over node 4 in the vertical layer.
Therefore, the drawing order is as follows:ㅋ
# **Z-Index Implementation Logic**
Implementing z-index equates to creating a logic for arranging DOM drawing order, considering the stacking contexts. A stacking context can be identified through a pre-order traversal of the DOM tree. First, let's define a Stacking Context.
```tsx
type StackingContext = {
zIndex: number //stacking context를 형성한 dom의 z-index
domOrder: number //stacking context를 형성한 dom의 전위순회 순서
}
type CollectedDom = {
contexts: StackingContext[] //dom이 물려받은 stacking context
domOrder: number //dom의 전위순회 순서
dom: HTMLELEMENT
}
```
A StackingContext is formed by a DOM element that has a z-index. It collects the zIndex and domOrder of the formed DOM into the stacking context. A child inherits the StackingContext from its parent. If the child has a new z-index, it adds a new context to the Stacking context inherited from the parent. Then, the CollectedDom information corresponding to node 7 would be as follows:
```tsx
const 7Node = {
contexts: [{zIndex: -1, domOrder: 6}] //6번 노드로부터 물려받음
domOrder: 7
dom: div태그
}
```
If you have collected `const collectedDoms: CollectedDom[]` while traversing the DOM, you can sort them in the correct order by considering the stacking context. There are three points to note:
1. If they are in the same stacking context, the order is determined by the DOM order.
2. If there is no stacking context, the z-index is considered to be 0.
3. In a stacking context, the parent element is drawn first regardless of the z-index of the child elements. (In vertical layer priority, it gives way to its children).
### 정렬로직
```tsx
function sort(a: CollectedDom, b: CollectedDom) {
const limit = Math.min(a.contexts.length, b.contexts.length)
/*
stacking context를 순회하며 비교합니다.
*/
for(let i = 0; i < limit; ++i) {
const aContext = a.contexts[i]
const bContext = b.contexts[i]
/*
* stacking context가 서로 다른 경우의 노드는 context의
* zIndex를 먼저 비교하고, 그 다음의 dom 순서를 비교합니다.
*/
if(aContext.zIndex !== bContext.zIndex) {
return aContext.zIndex - bContext.zIndex
} else if(aContext.domOrder - bContext.domOrder) {
return aContext.domOrder - bContext.domOrder
}
}
/*
* 이 아래부터는 a,b는 동일한 stacking context 있음을 의미한다.
* a와 b의 관계는 아래 둘 중 하나이다.
* 1. 부모 - 자식
* 2. 형제
*/
// 1. 부모-자식인 경우
if(limit > 0) {
const lastContext = a.contexts[limit-1] // 값이 같기 때문에 a,b 둘 중 어느것이여도 상관없다.
//둘 중 하나가 부모임
if(lastContext.domOrder === a.domOrder || lastContext.domOrder === b.domOrder {
return a.domOrder - b.domOrder
}
}
// 2. 형제인 경우
if(a.contexts.length !== b.contexts.length) {
const aContext = a.contexts[limit] || { zIndex:0, domOrder: a.domOrder }
const bContext = b.contexts[limit] || { zIndex:0, domOrder: b.domOrder }
/*
* stacking context가 서로 다른 경우의 노드는 context의
* zIndex를 먼저 비교하고, 그 다음의 dom 순서를 비교합니다.
*/
if(aContext.zIndex !== bContext.zIndex) {
return aContext.zIndex - bContext.zIndex
} else if(aContext.domOrder - bContext.domOrder) {
return aContext.domOrder - bContext.domOrder
}
}
// 그 외는 돔 순서로 결정한다.
return a.domOrder - b.domOrder
}
```
The above code expresses the logic for sorting by z-index. First, it checks if the stacking contexts are different. If they are different, it prioritizes comparing the zIndex, followed by comparing the DOM order. The length of the stacking contexts can be different. It compares them sequentially based on the shortest context. If the compared stacking contexts are all the same, it proceeds to the next step.
If the compared stacking contexts have the same value, it checks if the two DOMs have a `parent-child relationship`. If they are in the same stacking context, regardless of the child's z-index value, the child takes precedence over the parent in the vertical layer.
In the diagram, despite the red circle having a lower z-index value of -1 than its parent, it's clear that it has a higher priority in the vertical layering. If the parent's **`z-index: 0`** were to be removed, then the red circle would be positioned under the blue box.
The stacking context for the blue box is **`[{zIndex: 0, domOrder: 2}]`**, and for the red circle, it is **`[{zIndex: 0, domOrder: 2}, {zIndex: -1, domOrder: 3}]`**. Let's consider adding a purple circle as a child of the blue box.
The stacking context for the purple circle, similar to the blue box, is **`[{zIndex: 0, domOrder: 2}]`**. However, because its own domOrder is 3, it does not create a stacking context. As can be seen in the diagram above, the purple circle has a higher priority in the vertical layering than the red circle. Since an unspecified z-index is considered as 0, the red circle with a **`z-index of -1`** is consequently lower in priority.
## **Implementing in SVG**
SVG does not support the z-index property. Instead, elements positioned later in the DOM are given higher priority in the vertical stack. To apply z-index in SVG, one must manually manipulate the order of DOM elements. This is similar in canvas.
Using the **flutterjs** library, which creates an SVG tree analogous to the DOM tree, I leveraged the Visitor pattern and Stacking Contexts to implement z-index.
# **Conclusion**
This article has provided insights into the z-index property and its practical application within SVG. Writing this piece also allowed me to correct misunderstandings about the stacking context's operational rules and improve drag behavior in an ERD diagram I'm developing.
# **References**
- [https://flitter.dev/](https://flitter.dev/)
- [MDN on z-index](https://developer.mozilla.org/en-US/docs/Web/CSS/z-index) | moondaeseung | |
1,918,814 | Phone Sex, What is it, How to Do it and its Benefits. | Title: Mastering the Art of Phone Sex with Raquel: Essential Tips for Unforgettable... | 0 | 2024-07-10T16:44:27 | https://dev.to/raquel_rivera_208d3eed67e/phone-sex-what-is-it-how-to-do-it-and-its-benefits-35kg | phonesex, phonesexfun, howtophnesex, raquelphonesex | Title: Mastering the Art of Phone Sex with Raquel: Essential Tips for Unforgettable Experiences
https://latinaphonesex.com/best-latina-phone-sex/
Introduction
Hola, amor! I'm Raquel from Latina Phone Sex, here to guide you through the tantalizing world of phone sex. Exploring the realms of intimacy doesn't always need physical presence; sometimes, all it takes is a phone call. Whether you're in a long-distance relationship or looking to spice things up, phone sex can elevate your intimate encounters to exhilarating heights. This guide will walk you through everything from gaining consent to setting the scene, ensuring your experience is both steamy and satisfying.
Getting Started: The Basics of Phone Sex
Consent is Key
Before diving into the sultry details, it's crucial to ensure both parties are comfortable and enthusiastic about the idea of phone sex. Start by discussing it casually, and make sure to ask for explicit consent before initiating any session. Remember, consent is an ongoing process and should be reaffirmed throughout your conversation.
Setting the Scene
Creating the right environment is essential for a distraction-free experience. Here are some steps to prepare your space:
Switch your phone to Do Not Disturb mode to avoid interruptions.
Tidy up the space where you'll be during the call for maximum comfort.
Adjust the room temperature to your liking.
Have any lubricants, toys, or other pleasure-enhancing items within reach.
Consider background music or dim lighting to set a sensual mood.
Engaging Effectively: Techniques for Hotter Conversations
Language and Descriptions
The words you choose can significantly impact the heat of your encounter. Discuss and agree on which terms and descriptions resonate best with both of you. Sharing preferences enhances comfort and intimacy. Be attentive to the language your partner uses and mirror it to maintain a smooth and enticing dialogue.
Initiating the Encounter
Begin with suggestive remarks or recall a past intimate experience to set a provocative tone. Gradually describe what you’re wearing, how you feel, and what you wish you could do if you were together physically. Use vivid language to paint a picture that captivates all the senses.
Maintaining the Momentum
Keep the energy alive by describing actions slowly and elaborately. Use pauses and whispers to build anticipation and desire. If you sense a lull, ask open-ended questions to encourage your partner to express their fantasies or desires, keeping the dialogue flowing.
Exploring Fantasies
Phone sex can be an excellent platform for discussing and role-playing fantasies you might feel shy about in person. Whether it’s a secret kink or a curious fantasy, sharing these can add an exciting layer to your experience. Ensure clarity on what is purely fantasy versus what might be a future reality.
Advanced Moves and Tips
If you’re comfortable, consider mutual masturbation or guiding each other’s actions over the phone. Describing each touch and reaction can significantly enhance the experience. Don’t forget to vocalize your pleasure; hearing each other's reactions can be incredibly arousing.
Handling Awkward Moments
Not every moment will be perfect. If something feels off, gently steer the conversation in a different direction. Communication is key—let your partner know what works and what doesn’t, keeping the dialogue open and respectful.
Incorporating Technology
For those who want an added visual element, transitioning from a phone call to a video call can intensify the experience. Ensure both parties are comfortable with this before proceeding.
No Partner? No Problem!
Don’t have someone to engage in phone sex with? No need to worry! You can call me, Raquel, at Latina Phone Sex for a live phone sex call. I’m here to make your fantasies come to life and provide you with an unforgettable experience. Whether you're looking to explore your deepest desires or just have an intimate, erotic conversation, I am ready to take your call.
Call to Action
Ready to experience the thrilling world of phone sex with me? Don’t wait any longer! Reach out now and let’s dive into a realm of passion and excitement together. Call Raquel at Latina Phone Sex and let's make your fantasies a reality.
Conclusion: Embracing Phone Intimacy
While the idea of phone sex might seem daunting at first, with the right approach, it can lead to profoundly fulfilling and thrilling encounters. Remember, the goal is to enjoy each other's company and explore your desires safely and consensually. So relax, communicate openly, and let your imagination lead the way to unforgettable moments. By mastering these tips, you’re set to deepen your connection and enjoy the myriad pleasures of phone sex, ensuring every call leaves you eagerly anticipating the next.
Looking for an electrifying experience? Call me now at Latina Phone Sex and let’s make it unforgettable!
Raquel xx
[](https://latinaphonesex.com/best-latina-phone-sex/
) | raquel_rivera_208d3eed67e |
1,918,815 | AI-Driven Software Testing: The What, Why And How | Imagine a world where testing software wasn't a tedious chore but an exhilarating adventure. Think... | 0 | 2024-07-11T07:52:33 | https://www.techdogs.com/td-articles/trending-stories/ai-driven-software-testing-the-what-why-and-how | ai, software, testing, development | Imagine a world where testing software wasn't a tedious chore but an exhilarating adventure. Think Jim Carrey's wacky persona in "The Mask" – that wild, chaotic energy channeled into a powerful tool. Well, buckle up, because that's what AI-powered testing feels like!
In the realm of software development, AI is the new "Mask," an ancient artifact bestowing incredible abilities. Just like Stanley Ipkiss donned the mask and transformed, AI empowers developers with superhuman testing prowess. How? Let's delve into this virtual debugging jungle and unveil the secrets of AI's bug-squashing superpowers.
Gone are the days of endless manual testing and repetitive regression cycles (remember those?). AI swoops in like a superhero, wielding advanced algorithms that can analyze mountains of data. These algorithms, fueled by past test cases and user feedback, have become experts at spotting vulnerabilities. They identify patterns and anomalies that would leave even the most seasoned testers scratching their heads.
[Source](https://tenor.com/view/jim-carrey-jim-carrey-the-mask-movie-the-mask-gif-23713821)
Here's the best part: you don't need a magical mask (or a giant green head!) to benefit. AI streamlines the testing process in several ways:
- **Turbocharged Efficiency**: AI reduces testing times significantly. Automated test cases run swiftly, allowing developers to identify and fix issues faster. This means quicker turnaround times and more efficient use of resources.
- **X-ray Vision for Bugs**: Traditional testing often misses hidden issues. AI's advanced algorithms scan code for irregularities, identifying even subtle bugs that are hard to detect. This ensures a more thorough examination of the software.
- **Predictive Power**: AI analyzes patterns in past data to predict potential problem areas. This foresight allows developers to focus their testing efforts on critical zones, preventing issues before they arise.
- **Regression Testing Revolution**: Remember how code updates can introduce new bugs or break existing features? AI-powered regression testing ensures these surprise guests don't crash the party.
- **Resource Rasputin**: By automating repetitive tasks, AI frees up human testers to focus on more strategic aspects of quality assurance. Think of it as having a tireless intern who handles the grunt work.
- **The Ever-Learning Machine**: AI algorithms constantly learn and improve with each testing cycle. The more data they devour, the sharper their bug-detection skills become.
So, how exactly does this AI wizardry work? Buckle up for a glimpse into the world of AI-powered testing:
- **Test Case Transformer**: AI can craft test cases on autopilot, analyzing code and user behavior. These diverse scenarios expose potential weaknesses and bugs before they cause chaos.
- **Bug Buster Extraordinaire**: AI meticulously combs through code, searching for patterns and irregularities that might indicate bugs. These digital detectives sniff out even the most cleverly disguised bugs.
- **The Oracle of Bugs**: By studying past data and code changes, AI can predict where defects are likely to lurk. This foresight empowers developers to prioritize testing efforts in the most critical areas.
- **Natural Language Navigator**: As applications embrace natural language processing (NLP), testing these functionalities becomes crucial. AI with NLP skills can simulate complex user interactions and identify issues in how the software understands human language.
Read More-(https://www.techdogs.com/td-articles/trending-stories/ai-driven-software-testing-the-what-why-and-how)
Dive into our content repository of the latest [tech news](https://www.techdogs.com/resource/tech-news), a diverse range of articles spanning [introductory guides](https://www.techdogs.com/resource/td-articles/curtain-raisers), product reviews, trends and more, along with engaging interviews, up-to-date [AI blogs](https://www.techdogs.com/category/ai) and hilarious [tech memes](https://www.techdogs.com/resource/td-articles/tech-memes)!
Also explore our collection of [branded insights](https://www.techdogs.com/resource/branded-insights) via informative [white papers](https://www.techdogs.com/resource/white-papers), enlightening case studies, in-depth [reports](https://www.techdogs.com/resource/reports), educational [videos ](https://www.techdogs.com/resource/videos)and exciting [events and webinars](https://www.techdogs.com/resource/events) from leading global brands.
Head to the **[TechDogs homepage](https://www.techdogs.com/)** to Know Your World of technology today!
| td_inc |
1,918,817 | Welcome to the EveryVerse! | Late night sunsets, the buzz of anticipation for outdoor activities. Summer's great for loads of... | 28,024 | 2024-07-10T16:52:46 | https://dev.to/kydkennedy/welcome-to-the-everyverse-1cie | 3d, xr, mixedreality, cpp |
*Late night sunsets, the buzz of anticipation for outdoor activities. Summer's great for loads of things, including starting new projects! Recently, recharged from vacation, I finally started putting "pen to paper" on a project I've been ruminating on for some time now. And for even more accountability lets blog about it!*
##What's the EveryVerse?
Inspired by all of my fandoms the EveryVerse is a collection featuring items from my favorite fictional universes. For each item I'll create 3D models/scenes, animations, and interactions for XR experiences.
Who among us hasn't longed to own a *lightsaber* or maybe a *Movie Shack Hut* membership card and a copy of *Ello Gov'nor* on VHS from the Regular Show? With 3D and XR technologies easily available now, I decided why not make my own versions of the cool s**t I see in manga, on film and tv? Not only is it a way to merge my love of media, design, and tech, but also have a incrementally grow skills and of course my portfolio.
##EveryVerse Item 1
Cartoon Network has been officially sunsetted, and honestly, I'm pretty beat up about–I was definitely a CN kid in the 90s and early 00s. What better way to start off the EveryVerse than with an item from one of my earliest fandoms, Dexter's Lab.
In particular, I decided to recreate an item from a segment within the show call *The Justice Friends* which parodied super hero groups like DC's Justice League and Marvel's Avengers. Valhallen was my favorite, the God of Thunder and Righteous Rock!(you can find his image at the end of this post). So, I recreated Valhallen's Axe in Blender!
##Progress
Currently, modeling and basic materials are done. Next steps for Valhallen's Axe will be to set up a scene displaying the instrument, animate the scene, and eventually export to Unreal Engine to use in VR.
I'll be documenting my process for building out the EveryVerse. If you see something cool feel free to follow along!
Cheers!
######EveryVerse Post 001 Valhallen's Axe
| kydkennedy |
1,918,819 | From TypeScript to Golang: A Smoother Backend Journey | For the past three years, I've been immersed in the world of backend development. During that time,... | 0 | 2024-07-10T17:12:23 | https://dev.to/thelamedev/from-typescript-to-golang-a-smoother-backend-journey-2a6h | go, node, typescript, programming | For the past three years, I've been immersed in the world of backend development. During that time, I've had the opportunity to build a diverse range of applications using various technologies. From edutech and healthtech platforms to e-commerce solutions, I've utilized TypeScript with Express.js and Python with FastAPI and Flask. Recently, I embarked on a personal venture that sparked my journey with Golang, and it's been a transformative experience.
Golang's impact has been two-fold: speed and security. Its static typing system and focus on concurrency have empowered me to streamline my development process and release applications faster. Additionally, it has significantly reduced the chances of encountering unexpected errors that can plague dynamically typed languages. This newfound confidence has been a game-changer, allowing me to focus on crafting robust and efficient backend systems.
Now, Let's delve into the key reasons behind this shift:
**1. Embrace the Power of Static Typing:**
One of the biggest advantages of Golang is its static typing system. Unlike TypeScript's reliance on runtime checks, Golang enforces type safety at compile time. This code snippet showcases the clear distinction:
**TypeScript (Dynamic Typing):**
```typescript
function add(a: any, b: any): any {
return a + b;
}
const result = add(10, "hello"); // This would compile but cause a runtime error
console.log(result);
```
**Golang (Static Typing):**
```go
func add(a int, b int) int {
return a + b
}
result := add(10, 20) // This compiles successfully
fmt.Println(result)
```
With Golang, potential type mismatches are caught early, preventing runtime errors and unexpected behavior.
**2. Scaling Up with Ease:**
Golang shines when it comes to handling high-concurrency workloads. Its built-in mechanisms, like goroutines and channels, provide efficient ways to manage concurrent tasks without the need for complex scaling solutions. Here's a glimpse of a simple goroutine in action:
```go
go func() {
// Perform a long-running task here
fmt.Println("Task completed in a separate goroutine")
}()
// Main program continues execution concurrently
fmt.Println("Main program running")
```
This approach promotes lightweight concurrency, allowing your backend to handle hundreds of thousands of requests with ease.
**3. Farewell, Runtime Errors:**
TypeScript's transpiled nature can sometimes lead to runtime errors that wouldn't be apparent during development. Golang's static typing mitigates this issue significantly. Catching errors early in the compilation process translates to a more robust and predictable backend.
**4. Explicit Error Handling:**
Golang takes a unique approach to error handling compared to languages like TypeScript. It utilizes error values returned by functions, forcing developers to explicitly consider and handle potential errors. This approach, while requiring more upfront effort, promotes a more deliberate and error-resilient coding style. By explicitly expecting errors where they could occur, we can write code that gracefully handles unexpected situations and prevents cascading failures.
Here's a code snippet showcasing explicit error handling in Golang:
```go
func readFile(filename string) ([]byte, error) {
data, err := os.ReadFile(filename)
if err != nil {
return nil, fmt.Errorf("error reading file %s: %w", filename, err)
}
return data, nil
}
```
In this example, `the os.ReadFile` function returns both the data and a potential `error`. We use an if statement to check for the error and handle it gracefully. Notice how we also use `fmt.Errorf` to wrap the original error and provide more context in our custom error message. This is one of the idiomatic ways to handle errors in Golang, providing informative messages for debugging purposes.
**5. Building on a Solid Foundation:**
Golang's build and test tooling are top-notch. Tools like `go build` and `go test` are seamlessly integrated, offering a smooth development experience. Additionally, the built-in testing framework in Golang provides a clean and efficient way to write unit tests.
While TypeScript offers its own advantages, the combination of static typing, concurrency features, and robust tooling in Golang has significantly improved my backend development workflow. It's a language designed to handle demanding applications efficiently, and I'm excited to explore its full potential!
| thelamedev |
1,918,820 | Extracting Audio from Video in the Browser using React and FFmpeg WASM | Extracting Audio from Video in the Browser using React and FFmpeg WASM In today's web... | 0 | 2024-07-10T16:59:20 | https://dev.to/kumard3/extracting-audio-from-video-in-the-browser-using-react-and-ffmpeg-wasm-b9a | webassembly, react, javascript, vite |
# Extracting Audio from Video in the Browser using React and FFmpeg WASM
In today's web development landscape, performing complex media operations directly in the browser has become increasingly possible. One such operation is extracting audio from video files without server-side processing. This blog post will guide you through implementing an audio extraction feature in a React application using FFmpeg WASM.
## What We'll Build
We'll create a React application that allows users to:
1. Upload an MP4 video file
2. Extract the audio from the video
3. Download the extracted audio as an MP3 file
All of this will happen client-side, leveraging the power of WebAssembly through FFmpeg WASM.
## Prerequisites
To follow along, you should have:
- Basic knowledge of React and TypeScript
- Node.js and npm installed on your machine
- A code editor of your choice
## Setting Up the Project
First, let's set up a new React project using Vite:
```bash
npm create vite@latest audio-extractor -- --template react-ts
cd audio-extractor
npm install
```
Next, install the required dependencies:
```bash
npm install @ffmpeg/ffmpeg@0.12.10 @ffmpeg/util@0.12.1
```
## Implementing the Audio Extractor
Let's break down the implementation into steps:
### 1. Importing Dependencies
```typescript
import React, { useState, useRef } from 'react'
import { FFmpeg } from '@ffmpeg/ffmpeg'
import { toBlobURL, fetchFile } from '@ffmpeg/util'
```
We import the necessary React hooks and FFmpeg utilities.
### 2. Setting Up State and Refs
```typescript
const [loaded, setLoaded] = useState(false)
const [videoFile, setVideoFile] = useState<File | null>(null)
const ffmpegRef = useRef(new FFmpeg())
const messageRef = useRef<HTMLParagraphElement | null>(null)
```
We use state to track whether FFmpeg is loaded and to store the selected video file. Refs are used for the FFmpeg instance and a message display element.
### 3. Loading FFmpeg
```typescript
const load = async () => {
const baseURL = 'https://unpkg.com/@ffmpeg/core-mt@0.12.6/dist/esm'
const ffmpeg = ffmpegRef.current
ffmpeg.on('log', ({ message }) => {
if (messageRef.current) messageRef.current.innerHTML = message
})
await ffmpeg.load({
coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, 'text/javascript'),
wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, 'application/wasm'),
workerURL: await toBlobURL(`${baseURL}/ffmpeg-core.worker.js`, 'text/javascript'),
})
setLoaded(true)
}
```
This function loads the FFmpeg WASM core and sets up logging.
### 4. Extracting Audio
```typescript
const extractAudio = async () => {
if (!videoFile) {
alert('Please select an MP4 file first')
return
}
const ffmpeg = ffmpegRef.current
await ffmpeg.writeFile('input.mp4', await fetchFile(videoFile))
await ffmpeg.exec(['-i', 'input.mp4', '-vn', '-acodec', 'libmp3lame', '-q:a', '2', 'output.mp3'])
const data = await ffmpeg.readFile('output.mp3')
const audioBlob = new Blob([data], { type: 'audio/mp3' })
const audioUrl = URL.createObjectURL(audioBlob)
const link = document.createElement('a')
link.href = audioUrl
link.download = 'extracted_audio.mp3'
document.body.appendChild(link)
link.click()
document.body.removeChild(link)
}
```
This function handles the audio extraction process using FFmpeg commands and creates a download link for the extracted audio.
### 5. Handling File Selection
```typescript
const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
if (event.target.files && event.target.files[0]) {
const file = event.target.files[0]
if (file.type === 'video/mp4') {
setVideoFile(file)
} else {
alert('Please select an MP4 file.')
event.target.value = ''
}
}
}
```
This function ensures that only MP4 files are selected.
## Configuring Vite
To ensure proper functioning of FFmpeg WASM, we need to configure Vite. Create a `vite.config.ts` file in your project root:
```typescript
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react-swc'
export default defineConfig({
plugins: [react()],
optimizeDeps: {
exclude: ['@ffmpeg/ffmpeg', '@ffmpeg/util'],
},
server: {
headers: {
'Cross-Origin-Opener-Policy': 'same-origin',
'Cross-Origin-Embedder-Policy': 'require-corp',
},
},
})
```
This configuration excludes FFmpeg from dependency optimization and sets necessary headers for WASM to work correctly.
## Conclusion
We've successfully implemented a browser-based audio extraction feature using React and FFmpeg WASM. This approach allows for efficient client-side processing of media files, reducing server load and improving user experience.
By leveraging WebAssembly technology, we can bring powerful media manipulation capabilities directly to the browser, opening up new possibilities for web-based media applications.
## Full Code Reference
Here's the complete code for the `AudioExtractor` component:
```tsx
import React, { useState, useRef } from 'react'
import { FFmpeg } from '@ffmpeg/ffmpeg'
import { toBlobURL, fetchFile } from '@ffmpeg/util'
const AudioExtractor: React.FC = () => {
const [loaded, setLoaded] = useState(false)
const [videoFile, setVideoFile] = useState<File | null>(null)
const [message, setMessage] = useState('')
const ffmpegRef = useRef(new FFmpeg())
const load = async () => {
const baseURL = 'https://unpkg.com/@ffmpeg/core-mt@0.12.6/dist/esm'
const ffmpeg = ffmpegRef.current
ffmpeg.on('log', ({ message }) => {
setMessage(message)
})
await ffmpeg.load({
coreURL: await toBlobURL(`${baseURL}/ffmpeg-core.js`, 'text/javascript'),
wasmURL: await toBlobURL(`${baseURL}/ffmpeg-core.wasm`, 'application/wasm'),
workerURL: await toBlobURL(`${baseURL}/ffmpeg-core.worker.js`, 'text/javascript'),
})
setLoaded(true)
}
const extractAudio = async () => {
if (!videoFile) {
alert('Please select an MP4 file first')
return
}
const ffmpeg = ffmpegRef.current
await ffmpeg.writeFile('input.mp4', await fetchFile(videoFile))
await ffmpeg.exec([
'-i',
'input.mp4',
'-vn',
'-acodec',
'libmp3lame',
'-q:a',
'2',
'output.mp3',
])
const data = await ffmpeg.readFile('output.mp3')
const audioBlob = new Blob([data], { type: 'audio/mp3' })
const audioUrl = URL.createObjectURL(audioBlob)
const link = document.createElement('a')
link.href = audioUrl
link.download = 'extracted_audio.mp3'
document.body.appendChild(link)
link.click()
document.body.removeChild(link)
}
const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
if (event.target.files && event.target.files[0]) {
const file = event.target.files[0]
if (file.type === 'video/mp4') {
setVideoFile(file)
} else {
alert('Please select an MP4 file.')
event.target.value = ''
}
}
}
return (
<div className="my-8 rounded-lg border bg-gray-50 p-6">
<h2 className="mb-4 text-2xl font-semibold">Audio Extractor</h2>
{!loaded ? (
<button
onClick={load}
className="rounded bg-blue-500 px-4 py-2 font-bold text-white hover:bg-blue-700"
>
Load FFmpeg
</button>
) : (
<>
<input type="file" accept="video/mp4" onChange={handleFileChange} className="mb-4" />
<br />
<button
onClick={extractAudio}
disabled={!videoFile}
className="rounded bg-green-500 px-4 py-2 font-bold text-white hover:bg-green-700 disabled:opacity-50"
>
Extract Audio
</button>
<p className="mt-4 text-sm text-gray-600">{message}</p>
</>
)}
</div>
)
}
export default AudioExtractor
```
| kumard3 |
1,918,822 | Does sugar defender really work | Rising blood sugar levels are a hidden menace in modern society, silently undermining health and... | 0 | 2024-07-10T17:07:20 | https://dev.to/enaya_islam_2082252853053/does-sugar-defender-really-work-1epg | Rising blood sugar levels are a hidden menace in modern society, silently undermining health and well-being. This condition doesn’t just lead to the direct woes of diabetes but is intricately linked with an unexpected adversary: unexplained weight gain.
The crux of the matter lies in how our bodies manage insulin and glucose. When sugar spikes frequently, it can impair insulin production, a key factor in metabolic health. This disruption can cause the body to store more fat, especially when blood sugar imbalances become a regular affair.
The financial drain from countless doctor’s appointments and high-priced weight loss drugs often leads to frustration, as results can be elusive. However, there’s a silver lining in the cloud of blood glucose management struggles.
Sugar Defender emerges as a beacon of hope, promising to tackle the twin challenges of maintaining healthy blood sugar levels and aiding in weight loss. With its science-backed approach to enhancing insulin sensitivity and regulating blood sugar, Sugar Defender is gaining traction as a reliable ally in the fight against high blood sugar levels and weight management issues.
Positive testimonials flood Sugar Defender reviews, highlighting its potential to foster overall well-being and stable energy levels. This burgeoning interest beckons a closer look to ascertain if Sugar Defender truly stands up to the hype in the quest for balanced blood sugar and weight control.
Let’s begin with the supplement overview section.
Name: Sugar Defender
Aim: Sugar Defender is a powerful blood sugar supplement made to help men and women lower blood sugar levels and improve overall well-being.
Appearance: Liquid
Produced: Tom Green
Sugar Defender Rating: 4.8/5 stars
User Base: 2000+ and many positive Sugar Defender customer reviews
Side Effects: Check out the reviews!
Featured Benefits:
Regulates blood sugar levels, enhances insulin sensitivity.
Boosts energy levels, supports healthy glucose metabolism.
Promotes weight loss, improves metabolic rate.
Stabilizes blood glucose levels, reduces insulin resistance.
Mitigates food cravings, aids in sugar metabolism.
Helps maintain healthy glucose levels, betters overall health.
Lowers blood pressure, supports cardiovascular function.
Enhances cognitive function, prevents metabolic disorders.
Quantity Per Bottle: 60 ml Sugar Defender liquid
Serving Size: Daily, serve one full dropper of Sugar Defender
Composition: Chromium, African Mango Extract, Maca Root, Gymnema, Eleuthero, Coleus, Ginseng, Guarana, and other natural compounds
Production Standards:
Made with 100% natural ingredients, vitamins, and minerals
Free from synthetics, preservatives, and harmful stimulants
Produced in an FDA-approved facility following good manufacturing practices
A non-habit-forming and side effect-free supplement
Free eBooks:
The Ultimate Tea Remedies
Learn How to Manage Type II Diabetes
Price: Starting from $49 per bottle (Official Website)
Guarantee: 60-day money-back guarantee
Helpline:
+1-888-220-3185
support@sugardefender.com
https://groups.google.com/a/tensorflow.org/g/tflite/c/tv3-9DpD0pU | enaya_islam_2082252853053 | |
1,918,823 | How can I store something written in an input ? | How can I store information written in an input and make whatever is written in the input to show in... | 0 | 2024-07-10T17:11:00 | https://dev.to/prolificnicole/how-can-i-store-something-written-in-an-input--4nml | angular, help, typescript | How can I store information written in an input and make whatever is written in the input to show in the browser. These are the codes I wrote for the html and the typescript
This is the html code
```
<form action="">
<h1>Add User Information</h1>
<input name="userName" (input)="userDetails()" [(ngModel)]="userName" type="text"><br>
<input (input)="userDetails()" type="email" [(ngModel)]="email" name="email" placeholder="Email"><br>
<input (input)="userDetails()" type="text" [(ngModel)]="course" name="course" placeholder="Course"><br>
<input (input)="userDetails()" type="text" [(ngModel)]="location" name="Location" placeholder="Enter Your Location"><br>
<button (click)="addUser()">Add User</button>
<div *ngFor = "let user of allUser">
<h3>{{user}}</h3>
</div>
</form>
```
This is the typescript code
```
public userName:string = "";
public email:string = "";
public course:string = "";
public location:string = "";
public allUser:Array<object> = [{userName: this.userName}, {email: this.email}, {course: this.course}, {location: this.location}];
userDetails(){
console.log(this.allUser);
};
addUser(){
this.allUser.push(this.userArray);
console.log(this.allUser);
};
```
I'm new to Angular, so i don't really understand it yet
| prolificnicole |
1,918,825 | Responsive video - How can we reduce the size of video content served? | Video is the heaviest type of media used on websites. You're talking almost 4 megabytes of video on... | 0 | 2024-07-10T17:21:32 | https://www.roboleary.net/blog/responsive-video/ | webdev, html, javascript | Video is the [heaviest type of media used on websites](https://httparchive.org/reports/page-weight#bytesVideo). You're talking almost 4 megabytes of video on mobile devices for a median page with video. That weight has a huge impact on performance, the data cost for a user, the hosting cost for a website owner, and energy usage. How can we reduce the size of video content served upfront?
A big part of the problem is that often one big video file is being served to everyone. Ideally we want to serve identical video content, just a larger or smaller video depending on the device's viewport width and resolution. How do we do this?
## Can we use the `scrset` and `sizes` attributes for video?
No!
You might be familiar with using the [`srcset`](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/source#srcset) and [`sizes`](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/source#sizes) attributes used for images to provide responsive image sets. The [`<video>`](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video) element does not permit usage of the `srcset` attribute on accompanying [`<source>`](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/source) elements.
There is a [proposal to add support for the `srcset` and `sizes` attributes for video files](https://github.com/whatwg/html/issues/9446) to the HTML standard.
What do we do instead?
## How can we reduce the size of video content served?
You have 2 main options.
### The responsive HTML approach
You can use the [`media`](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/source#media) attribute on the `<source>` element to provide a media query. You can conditionally serve a video file depending on the browser's width, resolution, or orientation. Something like this:
```html
<video>
<source src="/video/small.mp4" media="(max-width: 599px)">
<source src="/video/large.mp4">
</video>
```
In this example, if the browser viewport is less than 600 pixels wide the browser will use the `small.mp4` video file, otherwise it will use the `large.mp4` video file.
The peculiar thing about this feature is that it [was **deleted** from the HTML standard in 2014](https://github.com/whatwg/html/commit/c5ec4f6203e199721a879a3267e63520e21a8f8f). This was partly based on claims that other methods were superior. That led to Chrome and Firefox pulling the stable code out of their codebases to comply with the changed standard, however Safari left it be. It took [a request from Scott Jehl in 2021](https://github.com/whatwg/html/issues/6363) to get the functionality restored.
The `media` attribute is supported in all browsers again as far as I can tell. The web.dev blog has [a somewhat vague note](https://web.dev/blog/new-in-the-web-io2024?hl=en#responsive_video) on responsive video in their "What's new in the web" article - it's not clear if they are referring to the `media` attribute or the `srcset` attribute.
I recommend reading [How to Use Responsive HTML Video article](https://scottjehl.com/posts/using-responsive-video/) for more details.
### Use a streaming protocol
Another option to reduce the weight of video content is use a streaming protocol such as the [HTTP Live Streaming (HLS) standard](https://developer.apple.com/streaming/). The most important feature of HLS is its ability to adapt the bitrate of the video to the actual speed of the connection. HLS videos are encoded in different resolutions and bitrates.
Streaming protocols are more complicated to implement than the responsive HTML approach. HLS is [supported by Safari](https://caniuse.com/http-live-streaming), but requires some JavaScript for the other browsers. This is a bummer.
The HTML side of the equation is simple. You use a `<video>` element with a source stream.
```html
<!-- streaming video -->
<video src="https://test-streams.mux.dev/x36xhzz/x36xhzz.m3u8"></video>
```
You can read more about HLS in [this article](https://www.freecodecamp.org/news/what-is-hls-and-when-to-use-it/).
---
I discussed how to [optimise YouTube embeds in a previous post](https://www.roboleary.net/2024/02/10/youtube-embeds-suck-but.html) if you are going down that route with video. Do *not* use the default embed code snippet!!
---
Written by [Rob O'Leary](https://www.roboleary.net)
[Subscribe to web feed](https://www.roboleary.net/feed.xml) for the latest articles.
<small>© Rob OLeary 2024</small>
| robole |
1,918,829 | Python Course - Day 1 Meet & Greet | Hi folks, Today very excited to join first session of python course. Whatsapp group notification... | 0 | 2024-07-10T17:23:54 | https://dev.to/hariharanumapathi/python-course-day-1-meet-greet-3fp2 | python, learning, community, beginners | Hi folks,
Today very excited to join first session of python course.
Whatsapp group notification sound asked me what are you waiting for come on click me.
I was completing my office works for that day i tried to complete as fast i can but unfortunately i cannot join the introductory session.
I only able to watch the python session on youtube live recording
In that introductory session i've done prepared a short intro about me to share a short in the community.
### That Short
```I'm not newbie programming,Now I'm working professional simply known for php application development in my organization.```
### What I know about python
I learned python 2 for a Machine Interface project to our existing PHP application
### Then why I'm joined this course
I read python functionally to complete the project goal. My learning path has gaps on that time need to fill that gaps.
### About the First day session
Python Usages
Syed Jaferk Brother Explained the python usages very well in layman terms. He covered the things automation, web application developement, api development,AI & Machine Learning, Iot these are quite more common now a days there is other department machine interfacing is also simpler and easyer using python
### Colab Note Book Introduction
Colab Notebook is new thing to me i thought that its a online ide platform need to deep dig into it later.
## Basic Print Command
### My Python Installation
I have been using the following python installation though this is a basics covering course. I hope the course does not requires special functionalities which is available in latest version
About FOSS,FOSS communities in another blog
To Be Continued...
| hariharanumapathi |
1,918,830 | Support Muhammad, a Gaza software engineer, relocate to Egypt for his mom's cancer treatment🙏 | Dear friends, I'm Muhammad, a software engineer. The war in Gaza destroyed everything—my home, my... | 0 | 2024-07-10T17:24:04 | https://dev.to/mohammed_amodi_0b04a77298/support-muhammad-a-gaza-software-engineer-relocate-to-egypt-for-his-moms-cancer-treatment-568h | Dear friends,
I'm Muhammad, a software engineer. The war in Gaza destroyed everything—my home, my job. Now, I'm raising funds to relocate my family to Egypt to be by my mother's side as she undergoes cancer treatment and to rebuild our lives.Please consider donating or sharing our story
https://www.gofundme.com/f/8c8xm-support-mohameds-familys-journey-to-safety?utm_medium=customer&utm_source=copy_link&utm_campaign=fp_sharesheet&lang=en_US&attribution_id=sl%3A67306a22-16c1-463a-b343-f4394d94a2a3 | mohammed_amodi_0b04a77298 | |
1,918,831 | Support Muhammad, a Gaza software engineer, relocate to Egypt for his mom's cancer treatment🙏 | Dear friends, I'm Muhammad, a software engineer. The war in Gaza destroyed everything—my home, my... | 0 | 2024-07-10T17:24:30 | https://dev.to/mohammed_amodi_0b04a77298/support-muhammad-a-gaza-software-engineer-relocate-to-egypt-for-his-moms-cancer-treatment-42ep | help, softwaredevelopment, performance | Dear friends,
I'm Muhammad, a software engineer. The war in Gaza destroyed everything—my home, my job. Now, I'm raising funds to relocate my family to Egypt to be by my mother's side as she undergoes cancer treatment and to rebuild our lives.Please consider donating or sharing our story
https://www.gofundme.com/f/8c8xm-support-mohameds-familys-journey-to-safety?utm_medium=customer&utm_source=copy_link&utm_campaign=fp_sharesheet&lang=en_US&attribution_id=sl%3A67306a22-16c1-463a-b343-f4394d94a2a3 | mohammed_amodi_0b04a77298 |
1,918,832 | Recommended Course: Practical Python Programming | The article is about a recommended course called "Practical Python Programming" offered by LabEx. It provides an overview of the course, highlighting the key topics and skills that learners will acquire, such as writing basic Python programs, working with data structures, using functions and objects, handling errors, and exploring advanced Python concepts like generators and iterators. The article emphasizes the course's ability to help learners develop robust and maintainable Python programs, effectively manipulate and process data, and organize their code using best practices. The article aims to entice readers to enroll in this comprehensive Python programming course and unlock a world of possibilities in the realm of Python development. | 27,678 | 2024-07-10T17:27:41 | https://dev.to/labex/recommended-course-practical-python-programming-4b44 | labex, programming, course, python |
Are you looking to enhance your programming skills and dive deeper into the world of Python? Look no further than the [Practical Python Programming](https://labex.io/courses/practical-python-programming) course offered by LabEx. This comprehensive course is designed to equip you with the essential knowledge and practical experience to become a proficient Python programmer.
## Course Overview
In this course, you will embark on an exciting journey to master the fundamentals of Python programming. From writing basic scripts to manipulating data structures, you'll learn how to leverage Python's powerful features to create robust and maintainable applications. The course covers a wide range of topics, including:
### Python Basics
- Learn how to write basic Python programs and scripts
- Familiarize yourself with numbers, strings, lists, and files
### Functional Programming
- Discover the power of functions, data types, and data structures
- Explore the use of list comprehensions, objects, and modules
### Error Handling
- Understand how to handle errors and exceptions effectively
### Object-Oriented Programming
- Dive into the concepts of classes, inheritance, and encapsulation
### Advanced Concepts
- Explore the world of iterators, generators, and pipelines
## Achievements and Outcomes
By the end of this course, you will be able to:
- Develop robust and maintainable Python programs
- Efficiently manipulate and process data using Python's built-in features
- Organize your code using functions, modules, and object-oriented programming
- Handle errors and exceptions gracefully
- Implement advanced Python concepts like generators and iterators
Don't miss this opportunity to enhance your Python programming skills. Enroll in the [Practical Python Programming](https://labex.io/courses/practical-python-programming) course today and unlock a world of possibilities in the realm of Python development.
## Hands-On Learning with LabEx
LabEx is a unique programming learning platform that offers an immersive, hands-on approach to education. Each course is accompanied by a dedicated Playground environment, allowing learners to put their newfound knowledge into practice immediately. This seamless integration of theory and application ensures a deeper understanding and retention of the concepts.
For beginners, LabEx provides step-by-step tutorials that guide learners through the learning process. Each step is equipped with automated verification, providing instant feedback on the learner's progress and understanding. Additionally, LabEx's AI-powered learning assistant offers invaluable support, helping learners with code corrections, concept explanations, and personalized guidance.
This comprehensive approach to learning, combining interactive environments, structured tutorials, and intelligent assistance, sets LabEx apart as a premier destination for anyone seeking to master programming languages like Python. With LabEx, the journey from beginner to proficient programmer becomes a rewarding and engaging experience.
---
## Want to Learn More?
- 🌳 Explore [20+ Skill Trees](https://labex.io/learn)
- 🚀 Practice Hundreds of [Programming Projects](https://labex.io/projects)
- 💬 Join our [Discord](https://discord.gg/J6k3u69nU6) or tweet us [@WeAreLabEx](https://twitter.com/WeAreLabEx) | labby |
1,918,833 | Understanding the Single Responsibility Principle (SRP) | The Single Responsibility Principle (SRP) is a cornerstone of object-oriented design, closely... | 0 | 2024-07-10T17:28:30 | https://dev.to/ravindradevrani/understanding-the-single-responsibility-principle-srp-34gm | solidprinciples, designpatterns, csharp | The `Single Responsibility Principle (SRP)` is a cornerstone of object-oriented design, closely associated with the `SOLID principles`. It emphasizes that **a class should have only one reason to change**, meaning it should have a single responsibility or purpose.
## What is SRP?
The principle asserts that **a class should do only one thing and do it very well**. This doesn't imply that a class should have only one method or behavior, but rather that it should contain a cohesive set of behaviors related to a single responsibility.
Let's explore SRP with an example.
## Code without SRP
It is the code representation of UML diagram in c#:
```csharp
public class Book
{
public string Title { get; }
public string Author { get; }
public Book(string title, string author)
{
Title = title;
Author = author;
}
public void Print()
{
Console.WriteLine($"Printing Book: {Title} by {Author}");
}
public void SaveBook(string filePath)
{
Console.WriteLine("Saving book to file: " + filePath);
}
}
```
## Analyzing the Code
Does the `Book` class adhere to the `SRP`? Let's break down its responsibilities:
- **Representing Book Data:** Properties like `Title` and `Author`.
- **Managing Book Data:** The `SaveBook` method.
- **Printing Book Details:** The `Print` method.
Clearly, the `Book` class handles multiple responsibilities.
## Problems with Multiple Responsibilities
**Note:** _`Change` is the only constant in the software._
You might wonder, what’s the harm in having multiple responsibilities in a single class? Here are some potential issues:
**1. Changing printing format:**
Suppose a client requests a change in the print format. Modifying the `Print` method might inadvertently introduce bugs. Since the `Book` class is used in various parts of the software, these bugs could propagate, making the code difficult to maintain.
**2. Altering the SaveFile logic:**
If the saving logic changes (e.g., saving to a database instead of a file), updating the `SaveBook` method could similarly introduce bugs, affecting all parts of the software that use the `Book` class.
**3. Adding new functionality:**
Adding new features, like `exporting the book to a PDF`, increases the complexity of the `Book` class if it already handles multiple responsibilities.
**4. Testing complexity:**
A class with multiple responsibilities can lead to complex unit tests, as tests must account for various concerns.
## Problems of Not Following SRP
- **Harder to Maintain:** Changes to one responsibility might break others, making the code harder to maintain.
- **Understanding challanges**: New developers might struggle to understand a class with multiple responsibilities.
- **Reduced reusablity**: If you need only the print functionality, you still have to include the save functionality, reducing reusability.
- **Poor Testability:** Testing becomes more difficult as tests need to cover multiple responsibilities.
## Refactored Example Following SRP
We can seperate the responsibilities into different classes.
- `BookClass` for managing book details.
- `BookPrinter` for printing the book.
- `BookRepository` for saving the book
Here is the refactored code.
```csharp
// Book.cs
public class Book
{
public string Title { get; set; }
public string Author { get; set; }
}
// BookPrinter.cs
public class BookPrinter
{
public void Print(Book book)
{
Console.WriteLine($"Printing Book: {book.Title} by {book.Author}");
}
}
// BookRepository.cs
public class BookRepository
{
public void SaveBook(Book book, string filePath)
{
Console.WriteLine("Saving book to file: " + filePath);
}
}
```
By seperating these responsibilities, each class now has single reason to change:
- The `Book` class will change if the structure of book detail changes.
- The `BookPrinter` class will change if the printing logic changes.
- The `BookRepository` class will change if the saving logic changes.
This makes the code more maintainable, testable, and adheres to the Single Responsibility Principle. | ravindradevrani |
1,918,834 | Introdução ao ORM do Django: Exercícios Práticos | O ORM (Object-Relational Mapping) do Django é uma poderosa ferramenta que permite aos desenvolvedores... | 0 | 2024-07-10T17:36:59 | https://dev.to/gustavogarciapereira/introducao-ao-orm-do-django-exercicios-praticos-38jp | webdev, django, orm, python | O ORM (Object-Relational Mapping) do Django é uma poderosa ferramenta que permite aos desenvolvedores interagir com bancos de dados relacionais usando código Python em vez de SQL. Essa abordagem orientada a objetos abstrai a complexidade das consultas SQL, tornando o processo de manipulação de dados mais intuitivo e alinhado com a lógica da aplicação. Com o ORM do Django, modelos de dados são definidos como classes Python, onde cada atributo da classe representa um campo no banco de dados. Isso permite que desenvolvedores trabalhem com dados de uma maneira mais natural e coesa dentro do ambiente de desenvolvimento Python.
Além de simplificar a interação com o banco de dados, o ORM do Django oferece uma série de funcionalidades avançadas que facilitam a execução de consultas complexas, a manipulação de dados e a manutenção da integridade referencial. Por exemplo, ao definir relações entre diferentes modelos, como OneToMany, ManyToMany e ForeignKey, o ORM do Django gerencia automaticamente as ligações entre tabelas, assegurando consistência e integridade dos dados. Adicionalmente, ele suporta operações de CRUD (Create, Read, Update, Delete) de forma eficiente e segura, além de permitir a construção de consultas dinâmicas e otimizadas usando Q objects e filtros. Com essas capacidades, o ORM do Django não só acelera o desenvolvimento, mas também promove práticas de codificação mais limpas e manuteníveis.
# Introdução ao ORM do Django: Exercícios Práticos
Neste post, vamos explorar 10 exercícios práticos que cobrem os conceitos fundamentais do ORM do Django. Cada exercício inclui uma pergunta e sua respectiva resposta para que você possa praticar e consolidar seu entendimento.
## 1. Criação de um Modelo
**Assunto:** Como definir um modelo Django com campos específicos.
**Exercício:**
Crie um modelo chamado `Book` com os campos `title` (char), `author` (char) e `published_date` (date).
```python
from django.db import models
class Book(models.Model):
title = models.CharField(max_length=200)
author = models.CharField(max_length=100)
published_date = models.DateField()
def __str__(self):
return self.title
```
## 2. Inserir Registros no Modelo
**Assunto:** Como inserir registros em um modelo usando o ORM do Django.
**Exercício:**
Insira um registro no modelo `Book` com os seguintes valores: `title` = "Django for Beginners", `author` = "gustavo g. Pereira", `published_date` = "2020-01-01".
```python
Book.objects.create(
title="Django for Beginners",
author="gustavo g. Pereira",
published_date="2020-01-01"
)
```
## 3. Consultar Registros
**Assunto:** Como consultar todos os registros de um modelo.
**Exercício:**
Consulte todos os registros do modelo `Book`.
```python
books = Book.objects.all()
for book in books:
print(book.title)
```
## 4. Filtrar Registros
**Assunto:** Como filtrar registros com base em um campo específico.
**Exercício:**
Filtre os registros do modelo `Book` onde o `author` é "William S. Vincent".
```python
books = Book.objects.filter(author="gustavo g. Pereira")
for book in books:
print(book.title)
```
## 5. Atualizar Registros
**Assunto:** Como atualizar registros existentes no banco de dados.
**Exercício:**
Atualize o campo `title` do registro onde o `author` é "gustavo g. Pereira" para "Django for Experts".
```python
Book.objects.filter(author="gustavo g. Pereira").update(title="Django for Experts")
```
## 6. Excluir Registros
**Assunto:** Como excluir registros do banco de dados.
**Exercício:**
Exclua todos os registros do modelo `Book` onde o `author` é "gustavo g. Pereira".
```python
Book.objects.filter(author="gustavo g. Pereira").delete()
```
## 7. Consultar Registros Ordenados
**Assunto:** Como consultar registros ordenados por um campo específico.
**Exercício:**
Consulte todos os registros do modelo `Book` ordenados pelo campo `published_date`.
```python
books = Book.objects.all().order_by('published_date')
for book in books:
print(book.title)
```
## 8. Usar Valores Distintos
**Assunto:** Como obter valores distintos de um campo específico.
**Exercício:**
Consulte todos os valores distintos do campo `author` no modelo `Book`.
```python
authors = Book.objects.values('author').distinct()
for author in authors:
print(author['author'])
```
## 9. Limitar a Quantidade de Registros Retornados
**Assunto:** Como limitar o número de registros retornados em uma consulta.
**Exercício:**
Consulte os primeiros 5 registros do modelo `Book`.
```python
books = Book.objects.all()[:5]
for book in books:
print(book.title)
```
## 10. Usar Q Objects para Consultas Complexas
**Assunto:** Como realizar consultas complexas usando Q objects para combinar múltiplas condições.
**Exercício:**
Consulte os registros do modelo `Book` onde o `title` contém a palavra "Django" e o `published_date` é após "2019-01-01".
```python
from django.db.models import Q
books = Book.objects.filter(Q(title__icontains="Django") & Q(published_date__gt="2019-01-01"))
for book in books:
print(book.title)
```
---
Espero que esses exercícios práticos ajudem você a entender melhor como utilizar o ORM do Django em suas aplicações. Se você tiver dúvidas ou quiser compartilhar suas próprias experiências, deixe um comentário abaixo! | gustavogarciapereira |
1,918,836 | Empower Your Role: A Guide for Technologists | Find purpose and pride in supporting your team and company. Learn to empower your role as a technologist with the right mindset.
#developers #jobsatisfaction #technologistguide #empoweryourrole #techmentorship #supportcompanygrowth #prideintech #techempowerment | 0 | 2024-07-10T17:40:46 | https://drive.google.com/file/d/1-uMMICykv2SkU2C3KUpU_WOpcjvdnM6K/view?usp=drive_link | ## Empower Your Role: A Guide for Technologists
In the fast-paced world of technology, it's easy to get caught up in the day-to-day tasks and lose sight of the bigger picture. However, finding pride in your work can stem from the pride you take in your role within a project or team.
### Understanding Your Impact
Pride in your role as a technologist can stem from the impact you have on others. Whether it's mentoring junior developers, empowering team members, or contributing to the company's growth, finding purpose in your role is crucial.
### The Power of Mentorship
One of the most impactful ways to empower your role is through mentorship. By guiding and supporting less experienced developers, you not only contribute to their growth but also elevate the overall skill level of the team.
### Supporting Company Growth
Empowering your role also involves contributing to the company's success. Whether it's through improving processes, supporting the team, or aiding the company's stability, finding purpose in these contributions can bring a deep sense of pride.
### Fostering a Culture of Empowerment
By recognizing the value of your role in supporting others, you can contribute to fostering a culture of empowerment within your team and company. This collective mindset creates a stronger, more cohesive work environment.
### Embracing Your Technologist Role
Empowering your role as a technologist goes beyond individual tasks. By taking pride in the impact and support you provide, you can find a deeper sense of purpose and fulfillment in your career.
| bsommardahl | |
1,918,848 | 4 Pro CSS Tricks Will Blow Your Mind | CSS (Cascading style sheets) is one of the most popular technologies in web design, allowing... | 0 | 2024-07-10T17:53:32 | https://dev.to/designobit/4-pro-css-tricks-will-blow-your-mind-4mgg | webdev, css, tutorial, design | CSS (Cascading style sheets) is one of the most popular technologies in web design, allowing developers to create visual and responsive designs. As a web developer, mastering CSS is crucial for bringing your design vision to life and ensuring a good user experience across all devices. Here are some tips you might not know in CSS:
## **1. Neumorphsime:**
Neumorphsime referred to soft UI design, is a popular design trend combining skeuomorphism and flat design. this style uses shadows and highlights to create a smooth look. here is how it works:
First, we create a subtle background: to start with Neumotphsime, choose a soft background color like light gray,
```
body {
background-color: #eee;
display: grid;
place-content: center;
height: 100vh;
}
```
then we create an element with these styles
```
.element {
height: 100px;
width: 100px;
transition: all 0.2s linear;
border-radius: 16px;
}
```
finally, we add a box-shadow to the element when hovering
```
.element:hover {
box-shadow: 12px 12px 12px rgba(0, 0, 0, 0.1), -10px -10px 10px white;
}
```
so we get this nice look
and you can make this too
just add an inset to the box shadow like this
```
.element:hover {
box-shadow: 12px 12px 12px rgba(0, 0, 0, 0.1) inset, -10px -10px 10px white inset;
}
```
## **2. Min() & Max() and clamp():**
these tools are making websites and apps more dynamic and responsive. you can use these functions to control element sizing and resizing. and creating flexible typography here how:
the min() function lets you set the smallest value from a list here how
**before**
```
.container {
width:800px;
max-width:90%;
}
```
**after**
```
.container{
width: min(800px,90%);
}
```
the max() function works the same as the min() function but takes the bigger value from a list here is how:
```
.container{
width: max(800px,90%);
}
```
sometimes you you set the width and min and max-width in one container there is another function named clamp() here is how it works
**before**
```
.container {
width:50vw;
min-width:400px;
max-width:800px;
}
```
**After**
```
.container {
width: clamp(400px,50vw,800px);
}
```
## **3. The :Has() and :Not() selector:**
the **:not()** selector represents elements that do not match a list of selectors
```
.container:not(:first-child) {
background-color: blue;
}
```
the **:has()** selector represents an element if any of the relative selectors that are passed to as an argument match
```
.container:has(svg) {
padding: 20px;
}
```
## **4. Text gradient:**
for this trick, we can't add a gradient to the text color directly like this
```
.text{
color: linear-gradient(to right, red,blue);
}
```
what we do instead
```
.text{
background: linear-gradient(to right, red,blue);
background-clip:text;
color:transparent;
}
```
and voila we get this awesome effect
## **Conclusion:**
By mastering one of these CSS techniques, you are going to elevate your web design skills to new heights. with only small adjustments with those techniques, you can lead to visually stunning results, and make your design more beautiful and user-friendly.
you can check more in: https://designobit.com/ | designobit |
1,918,838 | How do you find purpose and pride in your role as a technologist? Share your experiences! | Find purpose and pride in supporting your team and company. Learn to empower your role as a technologist with the right mindset.
#developers #jobsatisfaction #technologistguide #empoweryourrole #techmentorship #supportcompanygrowth #prideintech #techempowerment | 0 | 2024-07-10T17:42:09 | https://dev.to/bsommardahl/how-do-you-find-purpose-and-pride-in-your-role-as-a-technologist-share-your-experiences-28oc | As a veteran in the software development space, I have come to realize that true pride in our work often comes not just from what we do, but from the impact our roles have on others. Whether it's mentoring junior developers, helping colleagues grow, or contributing to the company's success, finding purpose in our roles is essential for a fulfilling career in technology. Empowering our roles means finding value in the support and guidance we provide to others, ultimately fostering a culture of continuous improvement and collective success. | bsommardahl | |
1,918,839 | Find a Reliable Kitchen Fabricator Near Me for Your Dream Kitchen | Creating your dream kitchen is an exciting journey that combines aesthetics with functionality. One... | 0 | 2024-07-10T17:43:09 | https://dev.to/tessastones/find-a-reliable-kitchen-fabricator-near-me-for-your-dream-kitchen-371l | quartz |
Creating your dream kitchen is an exciting journey that combines aesthetics with functionality. One of the critical aspects of this process is finding a reliable kitchen fabricator who can turn your vision into reality. This article will guide you through the steps of finding a trustworthy kitchen fabricator near you, with a particular focus on those specializing in [quartz stone slabs](https://tessastones.com/) and high-quality stone slabs.
Understanding the Role of a Kitchen Fabricator
A kitchen fabricator is a professional who specializes in creating custom countertops, cabinets, and other kitchen elements. Their role is to cut, shape, and install these components to fit your kitchen's unique dimensions and design preferences. But more than just a craftsman, a reliable kitchen fabricator acts as a partner in your renovation journey, ensuring that every detail aligns with your vision.
Why Choose Quartz Stone Slabs?
When it comes to countertops, [quartz stone slabs](https://tessastones.com/) are a popular choice. But why? Quartz is not only beautiful but also incredibly durable. It offers a range of colors and patterns, making it easy to match any kitchen decor. Moreover, quartz countertops are non-porous, which means they resist staining and bacteria—a crucial feature for a kitchen surface.
Benefits of High-Quality Stone Slabs
Investing in [high-quality stone slabs](https://tessastones.com/) can transform your kitchen from ordinary to extraordinary. These slabs offer superior durability, longevity, and aesthetic appeal. Unlike cheaper alternatives, high-quality stone slabs resist wear and tear, maintaining their beauty over the years. They can withstand the rigors of daily kitchen activities, from hot pots to sharp knives, making them a smart investment for any homeowner.
How to Find a Reliable Kitchen Fabricator Near Me
Finding a reliable kitchen fabricator near you might seem daunting, but it's manageable with the right approach. Start by conducting online research. Use search engines and social media platforms to find local kitchen fabricators. Websites like Yelp, Google Reviews, and Angie's List can provide valuable insights into the quality of services offered by different fabricators.
Questions to Ask a Potential Kitchen Fabricator
Before hiring a kitchen fabricator, it's essential to ask the right questions. Some key inquiries include:
How long have you been in business?
Can I see examples of your previous work?
Do you offer a warranty on your work?
What is your process for project management?
How do you handle unexpected issues during the project?
These questions will help you gauge the fabricator's experience, reliability, and quality of work.
Evaluating the Workmanship of a Kitchen Fabricator
Assessing the workmanship of a kitchen fabricator involves more than just looking at their portfolio. Visit some of their completed projects if possible. Pay attention to the details—how well are the edges finished? Are there any visible seams? High-quality workmanship is evident in the precision and care taken in every aspect of the installation.
The Importance of Customer Reviews and Testimonials
Customer reviews and testimonials provide real-world insights into a kitchen fabricator's reliability and quality of work. Look for consistent positive feedback and pay attention to how the fabricator responds to negative reviews. A fabricator who addresses complaints professionally and promptly demonstrates a commitment to customer satisfaction.
Comparing Quotes and Making a Decision
Once you've shortlisted a few potential fabricators, it's time to compare quotes. Ensure that each quote includes a detailed breakdown of costs, so you understand what you're paying for. While it's tempting to go for the cheapest option, remember that quality often comes at a price. Choose a fabricator who offers the best value for your money, balancing cost with quality and reliability.
The Process of Working with a Kitchen Fabricator
Working with a kitchen fabricator typically involves several stages:
Consultation: Discuss your vision, budget, and timeline.
Design: The fabricator creates a design based on your preferences.
Material Selection: Choose your preferred materials, such as quartz stone slabs.
Fabrication: The fabricator cuts and shapes the materials to fit your kitchen.
Installation: The fabricator installs the countertops, cabinets, and other elements.
Finishing Touches: Final adjustments and quality checks.
Understanding this process helps you manage your expectations and ensures a smooth collaboration.
Maintenance Tips for Quartz Countertops
Quartz countertops are relatively low-maintenance, but a few simple tips can keep them looking their best:
Clean regularly: Use a mild detergent and a soft cloth to clean spills and stains.
Avoid harsh chemicals: Steer clear of bleach and abrasive cleaners that can damage the surface.
Use trivets and cutting boards: Protect your countertops from hot pots and sharp knives.
Common Mistakes to Avoid When Choosing a Kitchen Fabricator
Choosing a kitchen fabricator requires careful consideration. Avoid these common mistakes:
Focusing solely on price: While budget is important, the cheapest option isn't always the best.
Neglecting to check references: Always ask for and check references to ensure quality and reliability.
Overlooking the contract details: Read the contract carefully and ensure all details are included before signing.
Future Trends in Kitchen Fabrication
The world of kitchen fabrication is constantly evolving. Some future trends to watch for include:
Sustainable materials: Eco-friendly options are becoming more popular.
Smart kitchens: Integration of technology in kitchen design is on the rise.
Personalized designs: Customization options are expanding, allowing for more unique and personalized kitchens.
Conclusion
Finding a reliable kitchen fabricator near you is a crucial step in creating your dream kitchen. By choosing high-quality quartz stone slabs and working with a trusted professional, you can ensure a beautiful and functional kitchen that will stand the test of time.
FAQs
1. How long does the kitchen fabrication process take?
The timeline varies depending on the project's complexity, but typically it takes 4-6 weeks from consultation to installation.
2. What is the cost of installing quartz countertops?
Costs can vary widely based on the size of your kitchen and the quality of the quartz slabs, but expect to pay between $50 to $100 per square foot.
3. Can I install quartz countertops myself?
While it's possible, it's not recommended unless you have experience. Professional installation ensures a perfect fit and finish.
4. How do I maintain my quartz countertops?
Regular cleaning with mild detergent and avoiding harsh chemicals will keep your countertops looking new. Use trivets and cutting boards to protect the surface.
5. What should I look for in a kitchen fabricator?
Look for experience, positive customer reviews, quality workmanship, and clear communication. Ensure they offer a warranty on their work.
| tessastones |
1,918,840 | What Are the Key Steps for Achieving the Best Exit Cleaning in Murrumba Downs? | The best exit cleaning in Murrumba Downs involves several key steps to ensure the property is left in... | 0 | 2024-07-10T17:43:21 | https://dev.to/bbondcleaning/what-are-the-key-steps-for-achieving-the-best-exit-cleaning-in-murrumba-downs-11hm | cleaning | The [best exit cleaning in Murrumba Downs](https://bbondcleaning.com.au/exit-cleaning/) involves several key steps to ensure the property is left in pristine condition and meets the landlord’s or property manager’s standards.
**Here are the essential steps:
**
**Plan and Schedule:
**
**Book Early:** Schedule your exit cleaning well in advance to ensure availability, especially during peak moving seasons.
**Create a Checklist:** List all areas and items that need to be cleaned to avoid missing anything.
**Gather Cleaning Supplies:**
Ensure you have all necessary cleaning supplies and equipment, such as cleaning solutions, microfiber cloths, sponges, a vacuum cleaner, mop, and bucket.
**Declutter and Remove Personal Items:**
Remove all personal belongings from the property before starting the cleaning process.
**Kitchen Cleaning:**
**Oven and Stovetop**: Clean the oven, stovetop, and range hood, removing grease and grime.
**Cabinets and Drawers:** Wipe down inside and outside of all cabinets and drawers.
**Bathroom Cleaning:**
**Toilets and Sinks:** Scrub and disinfect toilets, sinks, and faucets.
**Mirrors and Fixtures:** Clean mirrors and polish fixtures.
Bedroom and Living Area Cleaning:
**Windows**: Clean windows inside and out, including tracks and sills.
**Walls and Baseboards:** Wipe down walls, baseboards, and any marks or stains.
**Final Touches:**
**
Carpet Cleaning**: Consider professional carpet cleaning if necessary.
Inspect and Double-Check: Perform a final inspection to ensure all areas are spotless and nothing is overlooked.
**Professional Cleaning Services:
****Exit Cleaning Brisbane**: Full Bond Clean is here to make cleaning experiences hassle-free in Brisbane. Our business is here to make transferring out of a house as painless as possible for you. With the aid of [Bbond Cleaning](https://bbondcleaning.com.au) you may clear away everything unnecessary and restore the original appearance of your home.
By following these steps, you can achieve the best exit cleaning in Murrumba Downs, ensuring the property is in excellent condition and increasing the likelihood of receiving your full bond back.
Source Code : [Office cleaning services murrumba downs](https://bbondcleaning.com.au/office-cleaning/)
| bbondcleaning |
1,918,841 | Unlocking Success: Strategies and Stories from Startup Founders | Dive into the minds of startup founders who transformed their ideas into thriving businesses,... | 0 | 2024-07-10T17:44:56 | https://dev.to/resource_bunk/unlocking-success-strategies-and-stories-from-startup-founders-446e | startup, socialmedia, top7, bestofdev | Dive into the minds of startup founders who transformed their ideas into thriving businesses, generating $25,000 a month or more.
Starting a business is exhilarating yet challenging. Many aspiring entrepreneurs dream of turning their innovative ideas into successful ventures that not only solve real-world problems but also generate substantial revenue. In our latest ebook, we delve deep into the strategies and stories of startup founders who achieved remarkable success, earning $25,000 per month or more. These founders didn't just stumble upon their success—they strategically navigated early decisions and honed their products to meet market demands effectively.
Our ebook is a treasure trove of insights and actionable advice for anyone looking to build or scale a startup. Here's a glimpse of what you'll discover:
1. **Early Decisions for Success:** Learn how successful founders make critical early decisions that set the foundation for sustainable growth.
2. **Lesson 1: Solve Real Problems:** Understand the importance of identifying and addressing genuine pain points in the market.
3. **Lesson 2: Experiment and Adapt:** Discover how successful startups use experimentation and adaptation to refine their products and strategies.
4. **Lesson 3: Make Design Matter:** Explore the role of effective design in enhancing user engagement and satisfaction.
5. **Lesson 4: Find Your Market Fit:** Gain insights into finding and optimizing your product-market fit to ensure long-term success.
Each chapter is packed with real-world case studies and practical strategies that you can apply to your own startup journey. Whether you're just starting out or looking to refine your existing business, our ebook provides the guidance and inspiration you need to make informed decisions and drive meaningful growth.
Ready to take your startup to the next level? [Grab your copy of the ebook](https://resourcebunk.gumroad.com/l/Strategies-and-Stories-from-startup-founders-who-grew-25000-a-month?layout=profile) today and start implementing these proven strategies! Equip yourself with the knowledge and insights shared by successful founders who have been exactly where you are now. Don't miss out on this opportunity to accelerate your path to startup success—click [here](https://resourcebunk.gumroad.com/l/Strategies-and-Stories-from-startup-founders-who-grew-25000-a-month?layout=profile) to get started! | resource_bunk |
1,918,842 | Stop console.log. There are better ways. | Hey devs! We all love console.log(), but there are better ways to debug in JavaScript. Let's level... | 0 | 2024-07-10T17:45:05 | https://dev.to/buildwebcrumbs/stop-consolelog-better-ways-inside-26fp | javascript, webdev, beginners, programming | Hey devs! We all love `console.log()`, but there are better ways to debug in JavaScript. Let's level up!
### 1. `console.info()`
Use this for general info messages.
```javascript
console.info("Here's some info");
```
### 2. `console.debug()`
Perfect for detailed debugging.
```javascript
console.debug("Debugging details here");
```
### 3. `console.warn()`
Highlight warnings.
```javascript
console.warn("This is a warning!");
```
### 4. `console.error()`
For errors and issues.
```javascript
console.error("Something went wrong!");
```
### 5. `console.table()`
Display data in a table format.
```javascript
console.table([{ name: "Alice", age: 30 }, { name: "Bob", age: 25 }]);
```
### 6. `console.group()`
Organize your logs.
```javascript
console.group("User Data");
console.log("User: Alice");
console.log("Age: 30");
console.groupEnd();
```
### 7. `console.time()`
Measure execution time.
```javascript
console.time("Timer");
someFunction();
console.timeEnd("Timer");
```
Stop spamming `console.log()` and start using these powerful methods to debug smarter!
Happy coding! 🚀
{% embed https://github.com/webcrumbs-community/webcrumbs %} | opensourcee |
1,918,843 | Unlocking the Potential of React AI Assistant: A Deep Dive into Enhancing User Engagement | Discover the transformative power of voicebots with Sista AI. Join the AI revolution today! 🚀 | 0 | 2024-07-10T17:45:39 | https://dev.to/sista-ai/unlocking-the-potential-of-react-ai-assistant-a-deep-dive-into-enhancing-user-engagement-3cm7 | ai, react, javascript, typescript | <h2>Unleashing the Power of AI in React Apps</h2><p>This week has been buzzing with groundbreaking AI collaborations, fueling innovation across tech giants.</p><h2>Integrating AI into React Apps</h2><p>For those exploring AI integration for React, the AI-Assistant-React package is a game-changer.</p><p><strong>Sista AI</strong> offers a seamless intersection of AI voice assistants in React apps, revolutionizing user engagement and accessibility.</p><h2>Revolutionizing App Interaction</h2><p>Sista AI's voice assistant delivers a dynamic user experience with multi-language support and real-time data integration.</p><h2>The Future of AI in Tech</h2><p>By embracing Sista AI's innovative solutions, developers can elevate user engagement, streamline operations, and enhance user accessibility.</p><p>Experience the future of AI integration with <a href='https://smart.sista.ai/?utm_source=sista_blog&utm_medium=blog_post&utm_campaign=Unlocking_the_Potential_of_React_AI_Assistant'>Sista AI</a> today and redefine user engagement!</p><br/><br/><a href="https://smart.sista.ai?utm_source=sista_blog_devto&utm_medium=blog_post&utm_campaign=big_logo" target="_blank"><img src="https://vuic-assets.s3.us-west-1.amazonaws.com/sista-make-auto-gen-blog-assets/sista_ai.png" alt="Sista AI Logo"></a><br/><br/><p>For more information, visit <a href="https://smart.sista.ai?utm_source=sista_blog_devto&utm_medium=blog_post&utm_campaign=For_More_Info_Link" target="_blank">sista.ai</a>.</p> | sista-ai |
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