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How to create a constant array in JavaScript? Can we change its values? Explain.	To create a const array in JavaScript we need to write const before the array name. The individual array elements can be reassigned but not the whole array. Following is the code to create a constant array in JavaScript. Live Demo <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" c...	[ { "code": null, "e": 1344, "s": 1187, "text": "To create a const array in JavaScript we need to write const before the array name. The individual array elements can be reassigned but not the whole array." }, { "code": null, "e": 1408, "s": 1344, "text": "Following is the code to ...
SQL Full Outer Join Using Left and Right Outer Join and Union Clause	21 Apr, 2021 An SQL join statement is used to combine rows or information from two or more than two tables on the basis of a common attribute or field. There are basically four types of JOINS in SQL. In this article, we will discuss FULL OUTER JOIN using LEFT OUTER Join, RIGHT OUTER JOIN, and UNION clause. Consider the...	[ { "code": null, "e": 54, "s": 26, "text": "\n21 Apr, 2021" }, { "code": null, "e": 241, "s": 54, "text": "An SQL join statement is used to combine rows or information from two or more than two tables on the basis of a common attribute or field. There are basically four types of J...
Servlet – HttpSession Login and Logout Example	13 Jan, 2022 In general, the term “Session” in computing language, refers to a period of time in which a user’s activity happens on a website. Whenever you login to an application or a website, the server should validate/identify the user and track the user interactions across the application. To achieve this, Java Web...	[ { "code": null, "e": 28, "s": 0, "text": "\n13 Jan, 2022" }, { "code": null, "e": 459, "s": 28, "text": "In general, the term “Session” in computing language, refers to a period of time in which a user’s activity happens on a website. Whenever you login to an application or a web...
Context Variables in Python	17 Aug, 2020 Context variable objects in Python is an interesting type of variable which returns the value of variable according to the context. It may have multiple values according to context in single thread or execution. The ContextVar class present in contextvars module, which is used to declare and work with cont...	[ { "code": null, "e": 28, "s": 0, "text": "\n17 Aug, 2020" }, { "code": null, "e": 361, "s": 28, "text": "Context variable objects in Python is an interesting type of variable which returns the value of variable according to the context. It may have multiple values according to co...
Python \| Pandas dataframe.min()	24 Nov, 2018 Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages and makes importing and analyzing data much easier. Pandas dataframe.min() function returns the minimum of the values in the given object. If the...	[ { "code": null, "e": 28, "s": 0, "text": "\n24 Nov, 2018" }, { "code": null, "e": 242, "s": 28, "text": "Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages and makes imp...
Write on an image using openCV in C++	04 Feb, 2021 In this article, we will discuss how to write over an image using OpenCV C++. Function putText() from OpenCV C++ library will be used to write text on an image. Program 1: Below program shows how to write text over a blank background image: C++ // C++ program to demonstrate the// above approach#include <io...	[ { "code": null, "e": 28, "s": 0, "text": "\n04 Feb, 2021" }, { "code": null, "e": 189, "s": 28, "text": "In this article, we will discuss how to write over an image using OpenCV C++. Function putText() from OpenCV C++ library will be used to write text on an image." }, { ...
Minimum distance from a point to the line segment using Vectors	03 May, 2022 Given the coordinates of two endpoints A(x1, y1), B(x2, y2) of the line segment and coordinates of a point E(x, y); the task is to find the minimum distance from the point to line segment formed with the given coordinates.Note that both the ends of a line can go to infinity i.e. a line has no ending points...	[ { "code": null, "e": 52, "s": 24, "text": "\n03 May, 2022" }, { "code": null, "e": 479, "s": 52, "text": "Given the coordinates of two endpoints A(x1, y1), B(x2, y2) of the line segment and coordinates of a point E(x, y); the task is to find the minimum distance from the point to...
How to read a XLSX file with multiple Sheets in R?	06 Jun, 2021 In this article, we are going to see how to read an XLSX file with multiple Sheets in R Language. There are various external packages in R used to read XLSX files with multiple sheets. File Used: Method 1: Using readxl package The readxl package in R is used to import and read Excel workbooks in R, which c...	[ { "code": null, "e": 28, "s": 0, "text": "\n06 Jun, 2021" }, { "code": null, "e": 213, "s": 28, "text": "In this article, we are going to see how to read an XLSX file with multiple Sheets in R Language. There are various external packages in R used to read XLSX files with multipl...
Program to find the Interior and Exterior Angle of a Regular Polygon - GeeksforGeeks	19 Mar, 2021 Given the number of sides n of a regular polygon. The task is to find out the Interior angle and Exterior angle of the polygon.Examples: Input : n = 6 Output : Interior angle: 120 Exterior angle: 60 Input : n = 10 Output: Interior angle: 144 Exterior angle: 36 Interior angle: The angl...	[ { "code": null, "e": 26227, "s": 26199, "text": "\n19 Mar, 2021" }, { "code": null, "e": 26366, "s": 26227, "text": "Given the number of sides n of a regular polygon. The task is to find out the Interior angle and Exterior angle of the polygon.Examples: " }, { "code": nu...
How to create Text Editor using Javascript and HTML ? - GeeksforGeeks	16 Apr, 2021 Project Introduction: In this article, we will learn how to make a simple text editor JavaScript application where we can manipulate the user input in different styles, edit the input, capitalize, etc many string operations. Let’s see the implementation. Approach: Create buttons to perform operations on te...	[ { "code": null, "e": 39215, "s": 39187, "text": "\n16 Apr, 2021" }, { "code": null, "e": 39470, "s": 39215, "text": "Project Introduction: In this article, we will learn how to make a simple text editor JavaScript application where we can manipulate the user input in different st...
Substitute characters of a String in R Programming - chartr() Function - GeeksforGeeks	23 Dec, 2021 chartr() function in R Programming Language is used to do string substitutions. It replaces all the matches of the existing characters of a string with the new characters specified as arguments. Syntax: chartr(old, new, x) Parameters: old: old string to be substituted new: new string x: target string Exam...	[ { "code": null, "e": 26487, "s": 26459, "text": "\n23 Dec, 2021" }, { "code": null, "e": 26682, "s": 26487, "text": "chartr() function in R Programming Language is used to do string substitutions. It replaces all the matches of the existing characters of a string with the new cha...
Code Optimization in Compiler Design - GeeksforGeeks	03 Jul, 2020 The code optimization in the synthesis phase is a program transformation technique, which tries to improve the intermediate code by making it consume fewer resources (i.e. CPU, Memory) so that faster-running machine code will result. Compiler optimizing process should meet the following objectives : The op...	[ { "code": null, "e": 26487, "s": 26459, "text": "\n03 Jul, 2020" }, { "code": null, "e": 26788, "s": 26487, "text": "The code optimization in the synthesis phase is a program transformation technique, which tries to improve the intermediate code by making it consume fewer resourc...
Program for longest common directory path - GeeksforGeeks	30 Jun, 2021 Given n directory paths, we need to write a program to find longest common directory path. Examples: Input : 3 "/home/User/Desktop/gfg/test" "/home/User/Desktop/gfg/file" "/home/User/Desktop/geeks/folders" Output : Longest Common Path is /home/User/Desktop! Input : 4 "/home/User/Desktop/gfg/test", "/ho...	[ { "code": null, "e": 26099, "s": 26071, "text": "\n30 Jun, 2021" }, { "code": null, "e": 26202, "s": 26099, "text": "Given n directory paths, we need to write a program to find longest common directory path. Examples: " }, { "code": null, "e": 26558, "s": 26202, ...
How to get names of all colorscales in Plotly-Python? - GeeksforGeeks	28 Nov, 2021 In this article, we will learn how to hide the colorbar and legend in plotly express in Python. Color bar are gradients that go from light to dark or the other way round. They are great for visualizing datasets that goes from low to high, like income, temperature, or age. Step 1: Import all the required pa...	[ { "code": null, "e": 25537, "s": 25509, "text": "\n28 Nov, 2021" }, { "code": null, "e": 25810, "s": 25537, "text": "In this article, we will learn how to hide the colorbar and legend in plotly express in Python. Color bar are gradients that go from light to dark or the other way...
Perl \| Breakpoints of a Debugger - GeeksforGeeks	21 Feb, 2019 Controlling program execution in Perl can be done by telling the debugger to execute up to a certain specified point in the program, called a breakpoint. These breakpoints enable the user to divide the program into sections and look for the errors. Following are some commands in a debugger which are used t...	[ { "code": null, "e": 25480, "s": 25452, "text": "\n21 Feb, 2019" }, { "code": null, "e": 25729, "s": 25480, "text": "Controlling program execution in Perl can be done by telling the debugger to execute up to a certain specified point in the program, called a breakpoint. These bre...
Remove elements to make array satisfy arr[ i+1] < arr[i] for each valid i - GeeksforGeeks	29 May, 2019 Given an array arr[] of non-negative integers. We have to delete elements from this array such that arr[i + 1] > arr[j] for each valid i and this will be counted as one step. We have to apply the same operations until the array has become strictly decreasing. Now the task is to count the number of steps re...	[ { "code": null, "e": 25917, "s": 25889, "text": "\n29 May, 2019" }, { "code": null, "e": 26257, "s": 25917, "text": "Given an array arr[] of non-negative integers. We have to delete elements from this array such that arr[i + 1] > arr[j] for each valid i and this will be counted a...
Java Program to Get First or Last Elements from HashSet - GeeksforGeeks	20 Jun, 2021 The HashSet class implements the Set interface, backed by a hash table which is actually a HashMap instance. There is no guarantee made for the iteration order of the set which means that the class does not guarantee the constant order of elements over time. This class permits the null element. The class a...	[ { "code": null, "e": 25225, "s": 25197, "text": "\n20 Jun, 2021" }, { "code": null, "e": 25753, "s": 25225, "text": "The HashSet class implements the Set interface, backed by a hash table which is actually a HashMap instance. There is no guarantee made for the iteration order of ...
Find parent of each node in a tree for multiple queries - GeeksforGeeks	20 Dec, 2021 Given a tree with N vertices numbered from 0 to N – 1 and Q query containing nodes in the tree, the task is to find the parent node of the given node for multiple queries. Consider the 0th node as the root node and take the parent of the root node as the root itself.Examples: Tree: 0 / \ ...	[ { "code": null, "e": 25917, "s": 25889, "text": "\n20 Dec, 2021" }, { "code": null, "e": 26196, "s": 25917, "text": "Given a tree with N vertices numbered from 0 to N – 1 and Q query containing nodes in the tree, the task is to find the parent node of the given node for multiple ...
Flutter - Implementing Overlay - GeeksforGeeks	28 Jul, 2021 Overlays let independent child widgets float visual elements on top of other widgets by inserting them into the overlay’s Stack. This article discusses the implementation of Overlays in Flutter. To implement Overlay in Flutter we need to know about two Flutter built-in classes OverlayEntry class and the Ov...	[ { "code": null, "e": 25287, "s": 25259, "text": "\n28 Jul, 2021" }, { "code": null, "e": 25416, "s": 25287, "text": "Overlays let independent child widgets float visual elements on top of other widgets by inserting them into the overlay’s Stack." }, { "code": null, "e...
Grouped barplot in R with error bars - GeeksforGeeks	22 Nov, 2021 In this article, we are going to see how to create grouped barplot in the R programming language with error bars. A data frame can be created in R working space using the data.frame() method. The tidyverse package is installed and loaded into the working space in order to perform data mutations and manipul...	[ { "code": null, "e": 26487, "s": 26459, "text": "\n22 Nov, 2021" }, { "code": null, "e": 26601, "s": 26487, "text": "In this article, we are going to see how to create grouped barplot in the R programming language with error bars." }, { "code": null, "e": 26803, "...
strol() function in C++ - GeeksforGeeks	21 Nov, 2021 The strtol() function in C++ interprets the contents of a string as an integral number of the specified base and return its value as a long int.This function also sets an end pointer that points to the first character after the last valid numeric character of the string, if there is no such character then ...	[ { "code": null, "e": 25847, "s": 25819, "text": "\n21 Nov, 2021" }, { "code": null, "e": 26239, "s": 25847, "text": "The strtol() function in C++ interprets the contents of a string as an integral number of the specified base and return its value as a long int.This function also ...
How to get beginning of the first day of this week from timestamp in Android sqlite?	Before getting into an example, we should know what SQLite database in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation. SQLite supports all the relational database features. In order to access this database, you...	[ { "code": null, "e": 1459, "s": 1062, "text": "Before getting into an example, we should know what SQLite database in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation. SQLite supports all the ...
CSS 2D Transforms - GeeksforGeeks	08 Nov, 2021 A transformation in CSS is used to modify an element by its shape, size and position. It transforms the elements along the X-axis and Y-axis. There are 6 main types of transformation which are listed below: translate() rotate() scale() skewX() skewY() matrix() We will implement all these functions & will u...	[ { "code": null, "e": 27655, "s": 27627, "text": "\n08 Nov, 2021" }, { "code": null, "e": 27862, "s": 27655, "text": "A transformation in CSS is used to modify an element by its shape, size and position. It transforms the elements along the X-axis and Y-axis. There are 6 main type...
Polygon.io Review — Retrieving Historical Tick Data \| by Mario Emmanuel \| Towards Data Science	During last months one of my main objectives and one of the most time-consuming tasks has been to extract edges from tick data for Intraday operations. Within this context, a quality data feed becomes extremely important. I have started to use Polygon.io to get tick data from SPY as I want to test a set of discretionar...	[ { "code": null, "e": 324, "s": 172, "text": "During last months one of my main objectives and one of the most time-consuming tasks has been to extract edges from tick data for Intraday operations." }, { "code": null, "e": 713, "s": 324, "text": "Within this context, a quality dat...
C# \| Random.NextBytes() Method - GeeksforGeeks	01 May, 2019 The NextBytes(Byte[]) method of the System.Random class in C# is used to fill the elements of a specified array of bytes with random numbers. This method takes a byte array as a parameter and fills it with random numbers. Syntax: public virtual void NextBytes (byte[] buffer); Here, buffer is the array of b...	[ { "code": null, "e": 24302, "s": 24274, "text": "\n01 May, 2019" }, { "code": null, "e": 24524, "s": 24302, "text": "The NextBytes(Byte[]) method of the System.Random class in C# is used to fill the elements of a specified array of bytes with random numbers. This method takes a b...
AngularJS \| ng-bind Directive - GeeksforGeeks	30 Mar, 2021 The ng-bind Directive in AngularJS is used to bind/replace the text content of any particular HTML element with the value that is entered in the given expression. The value of specified HTML content updates whenever the value of the expression changes in ng-bind directive.Syntax: <element ng-bind="expres...	[ { "code": null, "e": 27880, "s": 27852, "text": "\n30 Mar, 2021" }, { "code": null, "e": 28163, "s": 27880, "text": "The ng-bind Directive in AngularJS is used to bind/replace the text content of any particular HTML element with the value that is entered in the given expression. ...
Cisco Interview Experience for Internship (On-Campus 2020) - GeeksforGeeks	29 Dec, 2020 Cisco visited our campus for hiring interns for 2020-21. Every process was done virtually due to the pandemic. Round 1(Online Round – 60 min): The first round consisted of 2 coding questions and 15 MCQs. The time allotted was 1 hour. The MCQs consisted of aptitude, basic output questions, networking, and s...	[ { "code": null, "e": 25109, "s": 25081, "text": "\n29 Dec, 2020" }, { "code": null, "e": 25220, "s": 25109, "text": "Cisco visited our campus for hiring interns for 2020-21. Every process was done virtually due to the pandemic." }, { "code": null, "e": 25601, "s":...
Javascript - How to listObjects from AWS S3 - onlinetutorialspoint	PROGRAMMINGJava ExamplesC Examples Java Examples C Examples C Tutorials aws JAVAEXCEPTIONSCOLLECTIONSSWINGJDBC EXCEPTIONS COLLECTIONS SWING JDBC JAVA 8 SPRING SPRING BOOT HIBERNATE PYTHON PHP JQUERY PROGRAMMINGJava ExamplesC Examples Java Examples C Examples C Tutorials aws Listing objects from AWS s3 bucket using Java...	[ { "code": null, "e": 158, "s": 123, "text": "PROGRAMMINGJava ExamplesC Examples" }, { "code": null, "e": 172, "s": 158, "text": "Java Examples" }, { "code": null, "e": 183, "s": 172, "text": "C Examples" }, { "code": null, "e": 195, "s": 183, ...
SciPy - Cluster Hierarchy Dendrogram - GeeksforGeeks	21 Nov, 2021 In this article, we will learn about Cluster Hierarchy Dendrogram using Scipy module in python. For this first we will discuss some related concepts which are as follows: Hierarchical clustering requires creating clusters that have a predetermined ordering from top to bottom. It is a type of unsupervised m...	[ { "code": null, "e": 24212, "s": 24184, "text": "\n21 Nov, 2021" }, { "code": null, "e": 24383, "s": 24212, "text": "In this article, we will learn about Cluster Hierarchy Dendrogram using Scipy module in python. For this first we will discuss some related concepts which are as f...
Get the time difference and convert it to hours in MySQL?	You can achieve with the help of timestampdiff() method from MySQL. The syntax is as follows − SELECT ABS(TIMESTAMPDIFF(HOUR,yourColumnName1,yourColumnName2)) as anyVariableName from yourTableName; To understand the above syntax, let us create a table. The query to create a table is as follows − mysql> create table Dif...	[ { "code": null, "e": 1157, "s": 1062, "text": "You can achieve with the help of timestampdiff() method from MySQL. The syntax is as follows −" }, { "code": null, "e": 1260, "s": 1157, "text": "SELECT ABS(TIMESTAMPDIFF(HOUR,yourColumnName1,yourColumnName2)) as\nanyVariableName fro...
Change Font Size of ggplot2 Facet Grid Labels in R - GeeksforGeeks	08 Dec, 2021 In this article, we will see how to change font size of ggplot2 Facet Grid Labels in R Programming Language. Let us first draw a regular plot without any changes so that the difference is apparent. Example: R library("ggplot2") DF <- data.frame(X = rnorm(20), ...	[ { "code": null, "e": 26487, "s": 26459, "text": "\n08 Dec, 2021" }, { "code": null, "e": 26597, "s": 26487, "text": "In this article, we will see how to change font size of ggplot2 Facet Grid Labels in R Programming Language. " }, { "code": null, "e": 26686, "s": ...
sorting in fork() - GeeksforGeeks	17 May, 2018 Prerequisite – Introduction of fork(), sorting algorithmsProblem statement – Write a program to sort the numbers in parent process and print the unsorted numbers in child process. For example : Input : 5, 2, 3, 1, 4 Output : Parent process sorted numbers are 1, 2, 3, 4, 5 Child process numbers to sort...	[ { "code": null, "e": 25367, "s": 25339, "text": "\n17 May, 2018" }, { "code": null, "e": 25561, "s": 25367, "text": "Prerequisite – Introduction of fork(), sorting algorithmsProblem statement – Write a program to sort the numbers in parent process and print the unsorted numbers i...
How to create multiple background image parallax in CSS ? - GeeksforGeeks	08 Sep, 2021 In this article, we will learn How to create multiple background image parallax in CSS. Approach: First, we will add background images using the background-image property in CSS. We can add multiple images using background-image. Syntax: background-image: url(image_url1),url(image_url2),...; Then we appl...	[ { "code": null, "e": 26621, "s": 26593, "text": "\n08 Sep, 2021" }, { "code": null, "e": 26711, "s": 26621, "text": "In this article, we will learn How to create multiple background image parallax in CSS. " }, { "code": null, "e": 26853, "s": 26711, "text": "...
Python \| Delete elements in range - GeeksforGeeks	26 Feb, 2019 The deletion of a single element comparatively easier, but when we wish to delete element in range, the task becomes a tedious once due to the rearrangements and shifting of list elements automatically in python. Let’s discuss certain ways in which elements can be deleted in range. Method #1 : Using del + ...	[ { "code": null, "e": 25537, "s": 25509, "text": "\n26 Feb, 2019" }, { "code": null, "e": 25820, "s": 25537, "text": "The deletion of a single element comparatively easier, but when we wish to delete element in range, the task becomes a tedious once due to the rearrangements and s...
How to implement BarChart in ReactJS ? - GeeksforGeeks	04 Mar, 2021 In our React app sometimes we want to display a BarChart representation of a particular data. We can use react-chartjs-2 and chart.js module in ReactJS to display information in BarCharts format. Following are some simple steps to do so: Step 1: Create a React application using the following command. npx c...	[ { "code": null, "e": 26071, "s": 26043, "text": "\n04 Mar, 2021" }, { "code": null, "e": 26309, "s": 26071, "text": "In our React app sometimes we want to display a BarChart representation of a particular data. We can use react-chartjs-2 and chart.js module in ReactJS to display ...
How to Convert string to float type in Golang? - GeeksforGeeks	19 May, 2020 ParseFloat function is an in-build function in the strconv library which converts the string type into a floating-point number with the precision specified by bit size. Example: In this example the same string -2.514 is being converted into float data type and then their sum is being printed. Once it is co...	[ { "code": null, "e": 25703, "s": 25675, "text": "\n19 May, 2020" }, { "code": null, "e": 25872, "s": 25703, "text": "ParseFloat function is an in-build function in the strconv library which converts the string type into a floating-point number with the precision specified by bit ...
Tensorflow.js tf.LayersModel class .compile() Method - GeeksforGeeks	10 May, 2021 Tensorflow.js is an open-source library developed by Google for running machine learning models and deep learning neural networks in the browser or node environment. The .compile() function configures and makes the model for training and evaluation process. By calling .compile() function we prepare the mod...	[ { "code": null, "e": 26545, "s": 26517, "text": "\n10 May, 2021" }, { "code": null, "e": 26711, "s": 26545, "text": "Tensorflow.js is an open-source library developed by Google for running machine learning models and deep learning neural networks in the browser or node environmen...
How to check if a string is html or not using JavaScript? - GeeksforGeeks	31 Jul, 2019 The task is to validate whether the given string is valid HTML or not using JavaScript. we’re going to discuss few techniques. Approach Get the HTML string into a variable. Create a RegExp which checks for the validation. RegExp should follow the rules of creating a HTML document. Example 1: In this exampl...	[ { "code": null, "e": 26341, "s": 26313, "text": "\n31 Jul, 2019" }, { "code": null, "e": 26468, "s": 26341, "text": "The task is to validate whether the given string is valid HTML or not using JavaScript. we’re going to discuss few techniques." }, { "code": null, "e":...
Ways to copy a vector in C++ - GeeksforGeeks	11 May, 2022 In the case of arrays, there is not much choice to copy an array into another, other than the iterative method i.e running a loop to copy each element at its respective index. But Vector classes have more than one method for copying entire vector into others in easier ways. There are basically two types of...	[ { "code": null, "e": 25719, "s": 25691, "text": "\n11 May, 2022" }, { "code": null, "e": 25994, "s": 25719, "text": "In the case of arrays, there is not much choice to copy an array into another, other than the iterative method i.e running a loop to copy each element at its respe...
When to use Vanilla JavaScript vs jQuery ? - GeeksforGeeks	09 Nov, 2021 Earlier, the websites used to be static. However, the introduction of vanilla JavaScript revolutionized the way websites used to look and function. Vanilla JS helped the developers in creating dynamic websites. Then came jQuery, a library of tools created by developers around the world, using Javascript. I...	[ { "code": null, "e": 26606, "s": 26578, "text": "\n09 Nov, 2021" }, { "code": null, "e": 26912, "s": 26606, "text": "Earlier, the websites used to be static. However, the introduction of vanilla JavaScript revolutionized the way websites used to look and function. Vanilla JS help...