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Facial recognition login system using Deep learning + ReactJS \| by Dhruvil Shah \| Towards Data Science	You must have seen a facial recognition login system in apps or websites. If you are an app developer or a website developer you may want to add facial recognition as a login phase in your system. Here, we are going to build a very easy-to-adapt login system from scratch that you can integrate into any app or system fo...	[ { "code": null, "e": 509, "s": 172, "text": "You must have seen a facial recognition login system in apps or websites. If you are an app developer or a website developer you may want to add facial recognition as a login phase in your system. Here, we are going to build a very easy-to-adapt login sys...
WebRTC - Voice Demo	In this chapter, we are going to build a client application that allows two users on separate devices to communicate using WebRTC audio streams. Our application will have two pages. One for login and the other for making an audio call to another user. The two pages will be the div tags. Most input is done through simpl...	[ { "code": null, "e": 2139, "s": 1887, "text": "In this chapter, we are going to build a client application that allows two users on separate devices to communicate using WebRTC audio streams. Our application will have two pages. One for login and the other for making an audio call to another user." ...
How to read and write a file using Javascript?	You cannot read or write files in JS on client side(browsers). This can be done on serverside using the fs module in Node.js. It provides sync and async functions to read and write files on the file system. Let us look at the exmaples of reading and writing files using the fs module on node.js Let us create a js file n...	[ { "code": null, "e": 1357, "s": 1062, "text": "You cannot read or write files in JS on client side(browsers). This can be done on serverside using the fs module in Node.js. It provides sync and async functions to read and write files on the file system. Let us look at the exmaples of reading and wri...
Grouping Matching in Perl	From a regular-expression point of view in Perl, there is no difference between the following two expressions except that the former is slightly clearer. $string =~ /(\S+)\s+(\S+)/; and $string =~ /\S+\s+\S+/; However, the benefit of grouping is that it allows us to extract a sequence from a regular expression. Groupin...	[ { "code": null, "e": 1216, "s": 1062, "text": "From a regular-expression point of view in Perl, there is no difference between the following two expressions except that the former is slightly clearer." }, { "code": null, "e": 1272, "s": 1216, "text": "$string =~ /(\\S+)\\s+(\\S+)...
Tryit Editor v3.7	Tryit: HTML responsive page	[]
How to gray out (disable) a Tkinter Frame?	A Tkinter frame widget can contain a group of widgets. We can change the state of widgets in the frame by enabling or disabling the state of its underlying frame. To disable all the widgets inside that particular frame, we have to select all the children widgets that are lying inside that frame using winfor_children() ...	[ { "code": null, "e": 1451, "s": 1062, "text": "A Tkinter frame widget can contain a group of widgets. We can change the state of widgets in the frame by enabling or disabling the state of its underlying frame. To disable all the widgets inside that particular frame, we have to select all the childre...
How to know the current position within a file in Python?	You can get the current position of the file object using the tell method. For example, if there is a file called my_file with text Hello\nworld, f = open('my_file.txt', 'r') f.readline() print f.tell() f.close() The above code will give the output as 6 as it would be pointing just at the beginning of the word 'world'.	[ { "code": null, "e": 1208, "s": 1062, "text": "You can get the current position of the file object using the tell method. For example, if there is a file called my_file with text Hello\\nworld," }, { "code": null, "e": 1275, "s": 1208, "text": "f = open('my_file.txt', 'r')\nf.rea...
Program to find amount of water in a given glass - GeeksforGeeks	14 Feb, 2022 There are some glasses with equal capacity as 1 litre. The glasses are kept as follows: 1 2 3 4 5 6 7 8 9 10 You can put water to the only top glass. If you put more than 1-litre water to 1st glass, water overflows and fills equ...	[ { "code": null, "e": 24223, "s": 24195, "text": "\n14 Feb, 2022" }, { "code": null, "e": 24312, "s": 24223, "text": "There are some glasses with equal capacity as 1 litre. The glasses are kept as follows: " }, { "code": null, "e": 24411, "s": 24312, "text": " ...
Convert a number into negative base representation in C++	In this tutorial, we will be discussing a program to convert a number into its negative base representation. For this we will be provided with a number and the corresponding negative base. Our task is to convert the given number into its negative base equivalent. We are allowing only values between -2 and -10 for negat...	[ { "code": null, "e": 1171, "s": 1062, "text": "In this tutorial, we will be discussing a program to convert a number into its negative base representation." }, { "code": null, "e": 1399, "s": 1171, "text": "For this we will be provided with a number and the corresponding negative...
Tryit Editor v3.7	Tryit: HTML table - striped rows and columns	[]
MongoDB query to return only embedded document?	It is not possible to return only embedded document. However, it will return all the documents from a collection. Let us first implement the following query to create a collection with documents >db.queryToEmbeddedDocument.insertOne({"UserName":"Larry","PostDetails":[{"UserMessage":"Hello","UserLikes":8},{"UserMessage"...	[ { "code": null, "e": 1257, "s": 1062, "text": "It is not possible to return only embedded document. However, it will return all the documents from a collection. Let us first implement the following query to create a collection with documents" }, { "code": null, "e": 1578, "s": 1257, ...
Creating animations using Transformations in OpenGL - GeeksforGeeks	31 Oct, 2019 Animation is the illusion of making us think that an object is really moving on the screen. But underneath they are just complex algorithms updating and drawing different objects. Aim: A complex animation of a walking dinosaur in 2D.Method: Using Transformations of individual body parts.See this Video: Alg...	[ { "code": null, "e": 24928, "s": 24900, "text": "\n31 Oct, 2019" }, { "code": null, "e": 25108, "s": 24928, "text": "Animation is the illusion of making us think that an object is really moving on the screen. But underneath they are just complex algorithms updating and drawing di...
Fortran - Strings	The Fortran language can treat characters as single character or contiguous strings. A character string may be only one character in length, or it could even be of zero length. In Fortran, character constants are given between a pair of double or single quotes. The intrinsic data type character stores characters and st...	[ { "code": null, "e": 2231, "s": 2146, "text": "The Fortran language can treat characters as single character or contiguous strings." }, { "code": null, "e": 2408, "s": 2231, "text": "A character string may be only one character in length, or it could even be of zero length. In Fo...
How to specify Decimal Precision and scale number in MySQL database using PHPMyAdmin?	You need to select a database when you are creating a table. Right now, I have a sample database. The snapshot is as follows: Now you need to give the table name as well as the number of columns you want: After that you need to press Go button. Now, the following section would be visible: The DECIMAL requires two param...	[ { "code": null, "e": 1188, "s": 1062, "text": "You need to select a database when you are creating a table. Right now, I have a sample database. The snapshot is as follows:" }, { "code": null, "e": 1267, "s": 1188, "text": "Now you need to give the table name as well as the numbe...
Divide 1 to n into two groups with minimum sum difference - GeeksforGeeks	28 Apr, 2021 Given a positive integer n such that n > 2. Divide numbers from 1 to n in two groups such that absolute difference of sum of each group is minimum. Print any two groups with their size in first line and in next line print elements of that group.Examples: Input : 5 Output : 2 5 2 3 ...	[ { "code": null, "e": 25240, "s": 25212, "text": "\n28 Apr, 2021" }, { "code": null, "e": 25497, "s": 25240, "text": "Given a positive integer n such that n > 2. Divide numbers from 1 to n in two groups such that absolute difference of sum of each group is minimum. Print any two g...
7 Examples to Master SQL Joins. A comprehensive practical guide \| by Soner Yıldırım \| Towards Data Science	SQL is a programming language used by most relational database management systems (RDBMS) to manage data stored in tabular form (i.e. tables). A relational database consists of multiple tables that relate to each other. The relation between tables is formed with shared columns. When we are to retrieve data from a relat...	[ { "code": null, "e": 451, "s": 172, "text": "SQL is a programming language used by most relational database management systems (RDBMS) to manage data stored in tabular form (i.e. tables). A relational database consists of multiple tables that relate to each other. The relation between tables is form...
The Floyd-Warshall algorithm in Javascript	Djikstra's algorithm is used to find distance/path of the shortest path from one node to all other nodes. There are cases where we need to find shortest paths from all nodes to all other nodes. This is where the All pairs shortest path algorithms come in handy. The most used all pairs shortest path algorithm is Floyd W...	[ { "code": null, "e": 1401, "s": 1062, "text": "Djikstra's algorithm is used to find distance/path of the shortest path from one node to all other nodes. There are cases where we need to find shortest paths from all nodes to all other nodes. This is where the All pairs shortest path algorithms come i...
Building a Color Recognizer in Python \| by Behic Guven \| Towards Data Science	In this post, I will show you how to build your own color recognizer using Python. This process is also known as “Color Detection”. We will create a basic application that will help us to detect the colors in an image. The program will also return as the RGB values of the colors, which is really helpful. Many graphic d...	[ { "code": null, "e": 650, "s": 172, "text": "In this post, I will show you how to build your own color recognizer using Python. This process is also known as “Color Detection”. We will create a basic application that will help us to detect the colors in an image. The program will also return as the ...
Decimal to Binary conversion using C Programming	How to convert a decimal number to a binary number by using the function in the C programming language? In this program, we are calling a function to binary in main(). The called function to binary will perform actual conversion. The logic we are using is called function to convert decimal number to binary number is as...	[ { "code": null, "e": 1166, "s": 1062, "text": "How to convert a decimal number to a binary number by using the function in the C programming language?" }, { "code": null, "e": 1292, "s": 1166, "text": "In this program, we are calling a function to binary in main(). The called fun...
How to clear screen using Java?	Following is the code to clear screen using Java − Live Demo public class Demo{ public static void main(String[] args){ System.out.print("\033[H\033[2J"); System.out.flush(); } } The screen would be cleared A class named Demo contains the main function. Here, the ANSI escape code is written, that cle...	[ { "code": null, "e": 1113, "s": 1062, "text": "Following is the code to clear screen using Java −" }, { "code": null, "e": 1124, "s": 1113, "text": " Live Demo" }, { "code": null, "e": 1260, "s": 1124, "text": "public class Demo{\n public static void main(St...
Math of Q-Learning — Python. Understand where the Bellman equation... \| by Omar Aflak \| Towards Data Science	Q-Learning is a type of Reinforcement Learning which is a type of Machine Learning. Reinforcement learning has been used lately (typically) to teach an AI to play a game (Google DeepMind Atari, etc). Our goal is to understand a simple version of Reinforcement learning called Q-Learning, and write a program that will le...	[ { "code": null, "e": 539, "s": 171, "text": "Q-Learning is a type of Reinforcement Learning which is a type of Machine Learning. Reinforcement learning has been used lately (typically) to teach an AI to play a game (Google DeepMind Atari, etc). Our goal is to understand a simple version of Reinforce...
The Simplest Data Science Project Using Pandas & Matplotlib \| by Shivangi Sareen \| Towards Data Science	We try so hard to find the perfect dataset to test out and improve our skills. But the truth is that no dataset is perfect. You make it perfect or at least improve it by preprocessing the data — an essential part of any data related project. So, just pick up any dataset and get working! I experimented and the journey w...	[ { "code": null, "e": 414, "s": 172, "text": "We try so hard to find the perfect dataset to test out and improve our skills. But the truth is that no dataset is perfect. You make it perfect or at least improve it by preprocessing the data — an essential part of any data related project." }, { ...
Redux - Store	A store is an immutable object tree in Redux. A store is a state container which holds the application’s state. Redux can have only a single store in your application. Whenever a store is created in Redux, you need to specify the reducer. Let us see how we can create a store using the createStore method from Redux. One...	[ { "code": null, "e": 2054, "s": 1815, "text": "A store is an immutable object tree in Redux. A store is a state container which holds the application’s state. Redux can have only a single store in your application. Whenever a store is created in Redux, you need to specify the reducer." }, { ...
getchar_unlocked() – Faster Input in C/C++ For Competitive Programming - GeeksforGeeks	08 Feb, 2022 getchar_unlocked() is similar to getchar() with the exception that it is not thread-safe. This function can be securely used in a multi-threaded program if and only if they are invoked when the invoking thread possesses the (FILE*) object, as is the situation after calling flockfile() or ftrylockfile(). Sy...	[ { "code": null, "e": 24437, "s": 24409, "text": "\n08 Feb, 2022" }, { "code": null, "e": 24742, "s": 24437, "text": "getchar_unlocked() is similar to getchar() with the exception that it is not thread-safe. This function can be securely used in a multi-threaded program if and onl...
BabylonJS - WireFrame	With wireframe, you get the skeleton of the 3D model with only lines and vertices. Let us now see how to apply wireframe for any shape. materialforbox.wireframe = true; <!doctype html> <html> <head> <meta charset = "utf-8"> <title>BabylonJs - Basic Element-Creating Scene</title> <script src = "bab...	[ { "code": null, "e": 2319, "s": 2183, "text": "With wireframe, you get the skeleton of the 3D model with only lines and vertices. Let us now see how to apply wireframe for any shape." }, { "code": null, "e": 2353, "s": 2319, "text": "materialforbox.wireframe = true;\n" }, { ...
How to filter String list by starting value in Java?	Let’s first create a String list − List list = new ArrayList<>(); list.add("wxy"); list.add("zabc"); list.add("ddd2"); list.add("def"); list.add("ghi"); list.add("wer"); list.add("uij"); list.add("wqy"); To filter String list by starting value, use filter() and startsWith() − list.stream().filter((b) -> b.startsWith("w...	[ { "code": null, "e": 1097, "s": 1062, "text": "Let’s first create a String list −" }, { "code": null, "e": 1266, "s": 1097, "text": "List list = new ArrayList<>();\nlist.add(\"wxy\");\nlist.add(\"zabc\");\nlist.add(\"ddd2\");\nlist.add(\"def\");\nlist.add(\"ghi\");\nlist.add(\"we...
Using networkD3 in R to create simple and clear Sankey diagrams \| by Keith McNulty \| Towards Data Science	I find Sankey diagrams super useful for illustrating flows of people or preferences. The networkD3 package in R offers a straightforward way to generate these diagrams without needing to know the ins and outs of the actual D3 code. To show you what I mean, I generated a Sankey diagram to show how the twelve regions of ...	[ { "code": null, "e": 404, "s": 172, "text": "I find Sankey diagrams super useful for illustrating flows of people or preferences. The networkD3 package in R offers a straightforward way to generate these diagrams without needing to know the ins and outs of the actual D3 code." }, { "code": n...
Tryit Editor v3.7	Tryit: Responsive form	[]
A Time Complexity Question - GeeksforGeeks	27 Dec, 2021 What is the time complexity of following function fun()? Assume that log(x) returns log value in base 2. C++ C Java Python3 C# Javascript void fun(){ int i, j; for (i = 1; i <= n; i++) for (j = 1; j <= log(i); j++) cout << "GeeksforGeeks";} // This code is contributed by SHUBHAMSIN...	[ { "code": null, "e": 24186, "s": 24158, "text": "\n27 Dec, 2021" }, { "code": null, "e": 24292, "s": 24186, "text": "What is the time complexity of following function fun()? Assume that log(x) returns log value in base 2. " }, { "code": null, "e": 24296, "s": 2429...
Difference between Context Free Grammar and Regular Grammar - GeeksforGeeks	31 May, 2021 Noam Chomsky has divided grammar into four types : Type Name 0 1 2 3 Chomsky Hierarchy 1. Context Free Grammar : Language generated by Context Free Grammar is accepted by Pushdown Automata It is a subset of Type 0 and Type 1 grammar and a superset of Type 3 grammar. Also called phase structured grammar. D...	[ { "code": null, "e": 24450, "s": 24419, "text": " \n31 May, 2021\n" }, { "code": null, "e": 24501, "s": 24450, "text": "Noam Chomsky has divided grammar into four types :" }, { "code": null, "e": 24506, "s": 24501, "text": "Type" }, { "code": null, ...
Angular forms formatCurrency Directive - GeeksforGeeks	02 Jun, 2021 In this article, we are going to see what is formatCurrency in Angular 10 and how to use it. The formatCurrency is used to format a number as currency using locale rules. Syntax: formatCurrency(value, locale, currency, currencyCode, digitsInfo) Parameters: value: The number to format. locale: A locale code...	[ { "code": null, "e": 26354, "s": 26326, "text": "\n02 Jun, 2021" }, { "code": null, "e": 26525, "s": 26354, "text": "In this article, we are going to see what is formatCurrency in Angular 10 and how to use it. The formatCurrency is used to format a number as currency using locale...
Class getFields() method in Java with Examples - GeeksforGeeks	25 Jan, 2022 The getFields() method of java.lang.Class class is used to get the fields of this class, which are the fields that are public and its members. The method returns the fields of this class in the form of array of Field objects. Syntax: public Field[] getFields() Parameter: This method does not accept any p...	[ { "code": null, "e": 25667, "s": 25639, "text": "\n25 Jan, 2022" }, { "code": null, "e": 25903, "s": 25667, "text": "The getFields() method of java.lang.Class class is used to get the fields of this class, which are the fields that are public and its members. The method returns t...
Java Program for Binary Insertion Sort - GeeksforGeeks	28 Jun, 2021 We can use binary search to reduce the number of comparisons in normal insertion sort. Binary Insertion Sort find use binary search to find the proper location to insert the selected item at each iteration.In normal insertion, sort it takes O(i) (at ith iteration) in worst case. we can reduce it to O(logi)...	[ { "code": null, "e": 26762, "s": 26734, "text": "\n28 Jun, 2021" }, { "code": null, "e": 27094, "s": 26762, "text": "We can use binary search to reduce the number of comparisons in normal insertion sort. Binary Insertion Sort find use binary search to find the proper location to ...
ReactJS Evergreen TextInput Component - GeeksforGeeks	11 Jun, 2021 React Evergreen is a popular front-end library with a set of React components for building beautiful products as this library is flexible, sensible defaults, and User friendly. TextInput Component allows the user to type the input text through a text input field. We can use the following approach in ReactJ...	[ { "code": null, "e": 25232, "s": 25204, "text": "\n11 Jun, 2021" }, { "code": null, "e": 25583, "s": 25232, "text": "React Evergreen is a popular front-end library with a set of React components for building beautiful products as this library is flexible, sensible defaults, and U...
Handling Plot Axis Spines in Python \| by Elena Kosourova \| Towards Data Science	Axis spines are the lines confining the plot area. Depending on the situation, we may want to remove some (or all) of them, change their color, make them less visible, regulate their width/style, or change their position. In this article, we’ll explore some handy approaches for dealing with axis spines. In many cases, ...	[ { "code": null, "e": 476, "s": 171, "text": "Axis spines are the lines confining the plot area. Depending on the situation, we may want to remove some (or all) of them, change their color, make them less visible, regulate their width/style, or change their position. In this article, we’ll explore so...
What is the difference between re.findall() and re.finditer() methods available in Python?	The re.findall() helps to get a list of all matching patterns. It searches from start or end of the given string. If we use method findall to search for a pattern in a given string it will return all occurrences of the pattern. While searching a pattern, it is recommended to use re.findall() always, it works like re.se...	[ { "code": null, "e": 1410, "s": 1062, "text": "The re.findall() helps to get a list of all matching patterns. It searches from start or end of the given string. If we use method findall to search for a pattern in a given string it will return all occurrences of the pattern. While searching a pattern...
C# \| Get value of the bit at a specific position in BitArray - GeeksforGeeks	01 Feb, 2019 The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace.BitArray.Get(Int32) method is used to get the value of the bit at a ...	[ { "code": null, "e": 24368, "s": 24340, "text": "\n01 Feb, 2019" }, { "code": null, "e": 24710, "s": 24368, "text": "The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the...
F# - Discriminated Unions	Unions, or discriminated unions allows you to build up complex data structures representing well-defined set of choices. For example, you need to build an implementation of a choice variable, which has two values yes and no. Using the Unions tool, you can design this. Discriminated unions are defined using the followin...	[ { "code": null, "e": 2430, "s": 2161, "text": "Unions, or discriminated unions allows you to build up complex data structures representing well-defined set of choices. For example, you need to build an implementation of a choice variable, which has two values yes and no. Using the Unions tool, you c...
Merge Overlapping Intervals using C++.	Given a set of time intervals in any order, merge all overlapping intervals into one and output the result which should have only mutually exclusive intervals Given set of interval is {{12, 14}, {11, 13}, {20, 22}, {21, 23}} then Interval {12, 14} and {11, 13} overlap with each other hence merge them as {11, 14} Interv...	[ { "code": null, "e": 1221, "s": 1062, "text": "Given a set of time intervals in any order, merge all overlapping intervals into one and output the result which should have only mutually exclusive intervals" }, { "code": null, "e": 1292, "s": 1221, "text": "Given set of interval i...
How do nested functions work in Python?	To learn about nested function, refer the following code. In the code, you can see Inner functions can access variables from the enclosing scope, which is the local variable. def mulFunc(num1): def mul(num2): return num1 * num2 return mul res = mulFunc(15) // The following prints 300 i.e. 20*15 print(res(20...	[ { "code": null, "e": 1237, "s": 1062, "text": "To learn about nested function, refer the following code. In the code, you can see Inner functions can access variables from the enclosing scope, which is the local variable." }, { "code": null, "e": 1385, "s": 1237, "text": "def mul...