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How to run a function when the page is loaded in JavaScript ?	21 Jul, 2021 A function can be executed when the page loaded successfully. This can be used for various purposes like checking for cookies or setting the correct version of the page depending on the user browser. Method 1: Using onload method: The body of a webpage contains the actual content that is to be displayed. T...	[ { "code": null, "e": 28, "s": 0, "text": "\n21 Jul, 2021" }, { "code": null, "e": 228, "s": 28, "text": "A function can be executed when the page loaded successfully. This can be used for various purposes like checking for cookies or setting the correct version of the page depend...
How to Convert java.util.Date to java.sql.Date in Java?	17 Jan, 2022 Date class is present in both java.util package and java.sql package. Though the name of the class is the same for both packages, their utilities are different. Date class of java.util package is required when data is required in a java application to do any computation or for other various things, while D...	[ { "code": null, "e": 28, "s": 0, "text": "\n17 Jan, 2022" }, { "code": null, "e": 596, "s": 28, "text": "Date class is present in both java.util package and java.sql package. Though the name of the class is the same for both packages, their utilities are different. Date class of ...
std::regex_match, std::regex_replace() \| Regex (Regular Expression) In C++	04 Jul, 2022 Regex is the short form for “Regular expression”, which is often used in this way in programming languages and many different libraries. It is supported in C++11 onward compilers.Function Templates used in regex regex_match() -This function return true if the regular expression is a match against the given...	[ { "code": null, "e": 54, "s": 26, "text": "\n04 Jul, 2022" }, { "code": null, "e": 266, "s": 54, "text": "Regex is the short form for “Regular expression”, which is often used in this way in programming languages and many different libraries. It is supported in C++11 onward compi...
Spring Boot – application.yml/application.yaml File	22 Dec, 2021 Spring is widely used for creating scalable applications. For web applications Spring provides. In Spring Boot, whenever we create a new Spring Boot Application in spring starter, or inside an IDE (Eclipse or STS) a file is located inside the src/main/resources folder named as application.properties file w...	[ { "code": null, "e": 53, "s": 25, "text": "\n22 Dec, 2021" }, { "code": null, "e": 394, "s": 53, "text": "Spring is widely used for creating scalable applications. For web applications Spring provides. In Spring Boot, whenever we create a new Spring Boot Application in spring sta...
Difference between MEAN Stack and MERN Stack	06 Nov, 2020 In the field of web development, full-stack development is playing a vital role. A full-stack development provides a solution for perfect solutions for front-end, back-end, testing, mobile application. In today’s world, the demand for a full-stack developer is rising tremendously. A full-stack developer ca...	[ { "code": null, "e": 53, "s": 25, "text": "\n06 Nov, 2020" }, { "code": null, "e": 559, "s": 53, "text": "In the field of web development, full-stack development is playing a vital role. A full-stack development provides a solution for perfect solutions for front-end, back-end, t...
Stepping Numbers	04 Jul, 2022 Given two integers ‘n’ and ‘m’, find all the stepping numbers in range [n, m]. A number is called stepping number if all adjacent digits have an absolute difference of 1. 321 is a Stepping Number while 421 is not. Examples : Input : n = 0, m = 21 Output : 0 1 2 3 4 5 6 7 8 9 10 12 21 Input : n = 10, m = ...	[ { "code": null, "e": 52, "s": 24, "text": "\n04 Jul, 2022" }, { "code": null, "e": 266, "s": 52, "text": "Given two integers ‘n’ and ‘m’, find all the stepping numbers in range [n, m]. A number is called stepping number if all adjacent digits have an absolute difference of 1. 321...
How to reverse a Vector using STL in C++?	30 May, 2021 Given a vector, reverse this vector using STL in C++.Example: Input: vec = {1, 45, 54, 71, 76, 12} Output: {12, 76, 71, 54, 45, 1} Input: vec = {1, 7, 5, 4, 6, 12} Output: {12, 6, 4, 5, 7, 1} Approach: Reversing can be done with the help of reverse() function provided in STL. The Time complexity of the ...	[ { "code": null, "e": 53, "s": 25, "text": "\n30 May, 2021" }, { "code": null, "e": 117, "s": 53, "text": "Given a vector, reverse this vector using STL in C++.Example: " }, { "code": null, "e": 248, "s": 117, "text": "Input: vec = {1, 45, 54, 71, 76, 12}\nOut...
How to append data to <div> element using JavaScript ?	11 Oct, 2019 To append the data to <div> element we have to use DOM(Document Object Model) manipulation techniques. The approach is to create a empty <div> with an id inside the HTML skeleton. Then that id will be used to fetch that <div> and then we will manipulate the inner text of that div. Syntax: document.getEleme...	[ { "code": null, "e": 54, "s": 26, "text": "\n11 Oct, 2019" }, { "code": null, "e": 336, "s": 54, "text": "To append the data to <div> element we have to use DOM(Document Object Model) manipulation techniques. The approach is to create a empty <div> with an id inside the HTML skel...
Minimize absolute difference between the smallest and largest array elements by minimum increment decrement operations	19 Jul, 2021 Given an array arr[] consisting of N positive integers, the task is to minimize the number of operations required to minimize the absolute difference between the smallest and largest elements present in the array. In each operation, subtract 1 from an array element and increment 1 to another array element....	[ { "code": null, "e": 28, "s": 0, "text": "\n19 Jul, 2021" }, { "code": null, "e": 336, "s": 28, "text": "Given an array arr[] consisting of N positive integers, the task is to minimize the number of operations required to minimize the absolute difference between the smallest and ...
Pythagorean Triplet in an array	21 Jun, 2022 Given an array of integers, write a function that returns true if there is a triplet (a, b, c) that satisfies a2 + b2 = c2. Example: Input: arr[] = {3, 1, 4, 6, 5} Output: True There is a Pythagorean triplet (3, 4, 5). Input: arr[] = {10, 4, 6, 12, 5} Output: False There is no Pythagorean triplet. Method...	[ { "code": null, "e": 52, "s": 24, "text": "\n21 Jun, 2022" }, { "code": null, "e": 176, "s": 52, "text": "Given an array of integers, write a function that returns true if there is a triplet (a, b, c) that satisfies a2 + b2 = c2." }, { "code": null, "e": 186, "s":...
Using Instance Blocks in Java	31 Aug, 2021 The instance block can be defined as the name-less method in java inside which we can define logic and they possess certain characteristics as follows. They can be declared inside classes but not inside any method. Instance block logic is common for all the objects. Instance block will be executed only onc...	[ { "code": null, "e": 53, "s": 25, "text": "\n31 Aug, 2021" }, { "code": null, "e": 400, "s": 53, "text": "The instance block can be defined as the name-less method in java inside which we can define logic and they possess certain characteristics as follows. They can be declared i...
Understanding HDBSCAN and Density-Based Clustering \| by Pepe Berba \| Towards Data Science	HDBSCAN is a clustering algorithm developed by Campello, Moulavi, and Sander [8]. It stands for “Hierarchical Density-Based Spatial Clustering of Applications with Noise.” In this blog post, I will try to present in a top-down approach the key concepts to help understand how and why HDBSCAN works. This is meant to comp...	[ { "code": null, "e": 344, "s": 172, "text": "HDBSCAN is a clustering algorithm developed by Campello, Moulavi, and Sander [8]. It stands for “Hierarchical Density-Based Spatial Clustering of Applications with Noise.”" }, { "code": null, "e": 630, "s": 344, "text": "In this blog p...
Removing empty fields from MongoDB	To remove empty fields, use deleteMany(). Let us first create a collection with documents − > db.removeEmptyFieldsDemo.insertOne({"StudentName":""}); { "acknowledged" : true, "insertedId" : ObjectId("5ce92b9578f00858fb12e919") } > db.removeEmptyFieldsDemo.insertOne({"StudentName":"Chris"}); { "acknowledged" : ...	[ { "code": null, "e": 1154, "s": 1062, "text": "To remove empty fields, use deleteMany(). Let us first create a collection with documents −" }, { "code": null, "e": 1737, "s": 1154, "text": "> db.removeEmptyFieldsDemo.insertOne({\"StudentName\":\"\"});\n{\n \"acknowledged\" : tr...
Causal Inference via CausalImpact \| by Pranav Prathvikumar \| Towards Data Science	Wikipedia defines it as the process of drawing a conclusion about a causal connection based on the conditions of the occurrence of an effect. In simpler words, Causal Inference is about determining the impact of an event/change on the desired outcome metric. Some instances of this being, if a newly launched marketing e...	[ { "code": null, "e": 1001, "s": 172, "text": "Wikipedia defines it as the process of drawing a conclusion about a causal connection based on the conditions of the occurrence of an effect. In simpler words, Causal Inference is about determining the impact of an event/change on the desired outcome met...
C# factorial	To calculate factorial in C#, you can use while loop and loop through until the number is not equal to 1. Here n is the value for which you want the factorial − int res = 1; while (n != 1) { res = res * n; n = n - 1; } Above, let’s say we want 5! (5 factorial) For that, n=5, Loop Iteration 1 − n=5 res = res*n i.e...	[ { "code": null, "e": 1168, "s": 1062, "text": "To calculate factorial in C#, you can use while loop and loop through until the number is not equal to 1." }, { "code": null, "e": 1223, "s": 1168, "text": "Here n is the value for which you want the factorial −" }, { "code":...
Support Vector Machines (SVM) clearly explained: A python tutorial for classification problems with 3D plots \| by Serafeim Loukas \| Towards Data Science	Everyone has heard about the famous and widely-used Support Vector Machines (SVMs). The original SVM algorithm was invented by Vladimir N. Vapnik and Alexey Ya. Chervonenkis in 1963. SVMs are supervised machine learning models that are usually employed for classification (SVC — Support Vector Classification) or regress...	[ { "code": null, "e": 354, "s": 171, "text": "Everyone has heard about the famous and widely-used Support Vector Machines (SVMs). The original SVM algorithm was invented by Vladimir N. Vapnik and Alexey Ya. Chervonenkis in 1963." }, { "code": null, "e": 808, "s": 354, "text": "SVM...
Find and Draw Contours using OpenCV in Python	For the purpose of image analysis we use the Opencv (Open Source Computer Vision Library) python library. The library name that has to be imported after installing opencv is cv2. In the below example we find the contours present in an image files. Contours help us identify the shapes present in an image. Contours are d...	[ { "code": null, "e": 1241, "s": 1062, "text": "For the purpose of image analysis we use the Opencv (Open Source Computer Vision Library) python library. The library name that has to be imported after installing opencv is cv2." }, { "code": null, "e": 1659, "s": 1241, "text": "In ...
Java if-else-if ladder statement	An if statement can be followed by an optional else if...elsestatement, which is very useful to test various conditions using single if...else if statement. When using if, else if, else statements there are a few points to keep in mind. An if can have zero or one else's and it must come after any else if's. An if can h...	[ { "code": null, "e": 1219, "s": 1062, "text": "An if statement can be followed by an optional else if...elsestatement, which is very useful to test various conditions using single if...else if statement." }, { "code": null, "e": 1299, "s": 1219, "text": "When using if, else if, e...
Error-First Callback in Node.js - GeeksforGeeks	16 Feb, 2022 Error-First Callback in Node.js is a function which either returns an error object or any successful data returned by the function. The first argument in the function is reserved for the error object. If any error has occurred during the execution of the function, it will be returned by the first argument....	[ { "code": null, "e": 25026, "s": 24998, "text": "\n16 Feb, 2022" }, { "code": null, "e": 25158, "s": 25026, "text": "Error-First Callback in Node.js is a function which either returns an error object or any successful data returned by the function." }, { "code": null, ...
SQLAlchemy ORM - Textual SQL	Earlier, textual SQL using text() function has been explained from the perspective of core expression language of SQLAlchemy. Now we shall discuss it from ORM point of view. Literal strings can be used flexibly with Query object by specifying their use with the text() construct. Most applicable methods accept it. For e...	[ { "code": null, "e": 2514, "s": 2340, "text": "Earlier, textual SQL using text() function has been explained from the perspective of core expression language of SQLAlchemy. Now we shall discuss it from ORM point of view." }, { "code": null, "e": 2693, "s": 2514, "text": "Literal ...
Mahotas - RGB to XYZ Conversion - GeeksforGeeks	10 Dec, 2021 In this article we will see how we can covert rgb image to xyz image in mahotas. An RGB image, sometimes referred to as a truecolor image, is stored in MATLAB as an m-by-n-by-3 data array that defines red, green, and blue color components for each individual pixel. Xyz is an additive color space based on h...	[ { "code": null, "e": 23975, "s": 23947, "text": "\n10 Dec, 2021" }, { "code": null, "e": 24635, "s": 23975, "text": "In this article we will see how we can covert rgb image to xyz image in mahotas. An RGB image, sometimes referred to as a truecolor image, is stored in MATLAB as a...
How to deal with CORS error in express Node.js Project ? - GeeksforGeeks	25 Jul, 2021 CORS, also known as Cross-Origin Resource Sharing, should be enabled if you want to make a request between your client and server when they are on different URLs. Let us consider client to be on http://localhost:5500 and the server on http://localhost:5000. Now if you try to make a request from your client...	[ { "code": null, "e": 24557, "s": 24529, "text": "\n25 Jul, 2021" }, { "code": null, "e": 24720, "s": 24557, "text": "CORS, also known as Cross-Origin Resource Sharing, should be enabled if you want to make a request between your client and server when they are on different URLs."...
How to multiply a polynomial to another using NumPy in Python? - GeeksforGeeks	29 Aug, 2020 In this article, we will make a NumPy program to multiply one polynomial to another. Two polynomials are given as input and the result is the multiplication of two polynomials. The polynomial p(x) = C3 x2 + C2 x + C1 is represented in NumPy as : ( C1, C2, C3 ) { the coefficients (constants)}. Let take two...	[ { "code": null, "e": 23901, "s": 23873, "text": "\n29 Aug, 2020" }, { "code": null, "e": 24078, "s": 23901, "text": "In this article, we will make a NumPy program to multiply one polynomial to another. Two polynomials are given as input and the result is the multiplication of two...
Merge operations using STL in C++ \| merge(), includes(), set_union(), set_intersection(), set_difference(), ., inplace_merge, - GeeksforGeeks	03 Mar, 2022 Some of the merge operation classes are provided in C++ STL under the header file “algorithm”, which facilitates several merge operations in a easy manner. Some of them are mentioned below. merge(beg1, end1, beg2, end2, beg3) :- This function merges two sorted containers and stores in new container in so...	[ { "code": null, "e": 23919, "s": 23891, "text": "\n03 Mar, 2022" }, { "code": null, "e": 24111, "s": 23919, "text": "Some of the merge operation classes are provided in C++ STL under the header file “algorithm”, which facilitates several merge operations in a easy manner. Some of...
C++ IOS Library - Iword	It is used to get integer element of extensible array and returns a reference to the object of type long which corresponds to index idx in the internal extensible array. If idx is an index to a new element and the internal extensible array is not long enough (or is not yet allocated), the function extends it (or alloca...	[ { "code": null, "e": 2773, "s": 2603, "text": "It is used to get integer element of extensible array and returns a reference to the object of type long which corresponds to index idx in the internal extensible array." }, { "code": null, "e": 2984, "s": 2773, "text": "If idx is an...
Breadth-first search traversal in Javascript	BFS visits the neighbor vertices before visiting the child vertices, and a queue is used in the search process. Following is how a BFS works − Visit the adjacent unvisited vertex. Mark it as visited. Display it. Insert it in a queue. If no adjacent vertex is found, remove the first vertex from the queue. Repeat Rule 1 ...	[ { "code": null, "e": 1205, "s": 1062, "text": "BFS visits the neighbor vertices before visiting the child vertices, and a queue is used in the search process. Following is how a BFS works −" }, { "code": null, "e": 1296, "s": 1205, "text": "Visit the adjacent unvisited vertex. Ma...
AI as a Movie Maker. How I created an entire short movie... \| by Merzmensch \| Towards Data Science	It ’s been a blast. I remember watching “Sunspring” — again and again. Fascinated and mesmerized by the absurd dialogues, I was trying to comprehend what’s going on in this short movie. But the meaning used to slip away. Because it was written by AI. Benjamin was the name of the author. Behind this name was a recurrent...	[ { "code": null, "e": 297, "s": 46, "text": "It ’s been a blast. I remember watching “Sunspring” — again and again. Fascinated and mesmerized by the absurd dialogues, I was trying to comprehend what’s going on in this short movie. But the meaning used to slip away. Because it was written by AI." },...
Python - How to search for a string in text files? - GeeksforGeeks	24 Jan, 2021 In this article, we are going to see how to search for a particular string in a text file. Consider below text File : Example 1: we are going to search string line by line if the string found then we will print that string and line number. Steps: Open a file. Set variables index and flag to zero. Run a loo...	[ { "code": null, "e": 24843, "s": 24815, "text": "\n24 Jan, 2021" }, { "code": null, "e": 24934, "s": 24843, "text": "In this article, we are going to see how to search for a particular string in a text file." }, { "code": null, "e": 24961, "s": 24934, "text": ...
Find the smallest positive number missing from an unsorted array \| Set 1 - GeeksforGeeks	11 Apr, 2022 You are given an unsorted array with both positive and negative elements. You have to find the smallest positive number missing from the array in O(n) time using constant extra space. You can modify the original array. Examples Input: {2, 3, 7, 6, 8, -1, -10, 15} Output: 1 Input: { 2, 3, -7, 6, 8, 1...	[ { "code": null, "e": 25372, "s": 25344, "text": "\n11 Apr, 2022" }, { "code": null, "e": 25591, "s": 25372, "text": "You are given an unsorted array with both positive and negative elements. You have to find the smallest positive number missing from the array in O(n) time using c...
Ionic - Cards	Since mobile devices have smaller screen size, cards are one of the best elements for displaying information that will feel user friendly. In the previous chapter, we have discussed how to inset lists. Cards are very similar to inset lists, but they offer some additional shadowing that can influence the performance for...	[ { "code": null, "e": 2798, "s": 2463, "text": "Since mobile devices have smaller screen size, cards are one of the best elements for displaying information that will feel user friendly. In the previous chapter, we have discussed how to inset lists. Cards are very similar to inset lists, but they off...
Adjusting the spacing between the edge of the plot and the X-axis in Matplotlib	To adjust the spacing between the edge of the plot and the X-axis, we can use tight_layout() method or set the bottom padding of the current figure. Set the figure size and adjust the padding between and around the subplots. Create x and y data points using numpy. Plot x and y data points using plot() method. To displa...	[ { "code": null, "e": 1211, "s": 1062, "text": "To adjust the spacing between the edge of the plot and the X-axis, we can use tight_layout() method or set the bottom padding of the current figure." }, { "code": null, "e": 1287, "s": 1211, "text": "Set the figure size and adjust th...
Firebase - Quick Guide	As per official Firebase documentation − Firebase can power your app's backend, including data storage, user authentication, static hosting, and more. Focus on creating extraordinary user experiences. We will take care of the rest. Build cross-platform native mobile and web apps with our Android, iOS, and JavaScript SD...	[ { "code": null, "e": 2207, "s": 2166, "text": "As per official Firebase documentation −" }, { "code": null, "e": 2594, "s": 2207, "text": "Firebase can power your app's backend, including data storage, user authentication, static hosting, and more. Focus on creating extraordinary...
Java program to find common elements in three sorted arrays	The common elements in three sorted arrays are the elements that occur in all three of them. An example of this is given as follows − Array1 = 1 3 5 7 9 Array2 = 2 3 6 7 9 Array3 = 1 2 3 4 5 6 7 8 9 Common elements = 3 7 9 A program that demonstrates this is given as follows − public class Example { public static void ...	[ { "code": null, "e": 1196, "s": 1062, "text": "The common elements in three sorted arrays are the elements that occur in all three of them. An example of this is given as follows −" }, { "code": null, "e": 1285, "s": 1196, "text": "Array1 = 1 3 5 7 9\nArray2 = 2 3 6 7 9\nArray3 =...
Get Started with C#	The easiest way to get started with C#, is to use an IDE. An IDE (Integrated Development Environment) is used to edit and compile code. In our tutorial, we will use Visual Studio Community, which is free to download from https://visualstudio.microsoft.com/vs/community/. Applications written in C# use the .NET Framework...	[ { "code": null, "e": 58, "s": 0, "text": "The easiest way to get started with C#, is to use an IDE." }, { "code": null, "e": 136, "s": 58, "text": "An IDE (Integrated Development Environment) is used to edit and compile code." }, { "code": null, "e": 271, "s": 136...
What does the two question marks together (??) mean in C#?	It is the null-coalescing operator. The null-coalescing operator ?? returns the value of its left-hand operand if it isn't null; otherwise, it evaluates the right-hand operand and returns its result. The ?? operator doesn't evaluate its right-hand operand if the lefthand operand evaluates to non-null. A nullable type c...	[ { "code": null, "e": 1365, "s": 1062, "text": "It is the null-coalescing operator. The null-coalescing operator ?? returns the value of its left-hand operand if it isn't null; otherwise, it evaluates the right-hand operand and returns its result. The ?? operator doesn't evaluate its right-hand opera...
Method and Block Synchronization in Java	When we start two or more threads within a program, there may be a situation when multiple threads try to access the same resource and finally they can produce unforeseen result due to concurrency issues. For example, if multiple threads try to write within a same file then they may corrupt the data because one of the ...	[ { "code": null, "e": 1517, "s": 1062, "text": "When we start two or more threads within a program, there may be a situation when multiple threads try to access the same resource and finally they can produce unforeseen result due to concurrency issues. For example, if multiple threads try to write wi...
Using Non-negative matrix factorization to classify companies. \| by Christophe GEISSLER \| Towards Data Science	Companies are complex entities that evolve over time. As a data-scientist involved in investment, I have long been asking myself the question of evaluating the most appropriate dimension for modeling enterprise data: in what space do these things live? No better answer could be found than this one: “Far too many!”. Ano...	[ { "code": null, "e": 1046, "s": 171, "text": "Companies are complex entities that evolve over time. As a data-scientist involved in investment, I have long been asking myself the question of evaluating the most appropriate dimension for modeling enterprise data: in what space do these things live? N...
Explain soft reset with an example in Git	Soft reset will move the HEAD pointer to the commit specified. This will not reset the staging area or the working directory. The diagram shows a file named File1.txt within the git repository. A, B, C and D represent lines that are added to the file. The diagram indicates that a commit is performed after adding each l...	[ { "code": null, "e": 1188, "s": 1062, "text": "Soft reset will move the HEAD pointer to the commit specified. This will not reset the staging area or the working directory." }, { "code": null, "e": 1533, "s": 1188, "text": "The diagram shows a file named File1.txt within the git ...
Java & MySQL - Statement	JDBC Statement interface defines the methods and properties to enable send SQL commands to MySQL database and retrieve data from the database. Statement is used for general-purpose access to your database. It is useful when you are using static SQL statements at runtime. The Statement interface cannot accept parameters...	[ { "code": null, "e": 3008, "s": 2686, "text": "JDBC Statement interface defines the methods and properties to enable send SQL commands to MySQL database and retrieve data from the database. Statement is used for general-purpose access to your database. It is useful when you are using static SQL stat...
Faster YOLOv4 Performance with CUDA enabled OpenCV \| by Akash James \| Towards Data Science	YOLO, short for You-Only-Look-Once has been undoubtedly one of the best object detectors trained on the COCO dataset. YOLOv4 being the latest iteration has a great accuracy-performance trade-off, establishing itself as one of the State-of-the-art object detectors. Typical mechanisms of employing any object detector in ...	[ { "code": null, "e": 1009, "s": 172, "text": "YOLO, short for You-Only-Look-Once has been undoubtedly one of the best object detectors trained on the COCO dataset. YOLOv4 being the latest iteration has a great accuracy-performance trade-off, establishing itself as one of the State-of-the-art object ...