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Computer Programming - Functions	A function is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and a high degree of code reusing. You have already seen various functions like printf() and main(). These are called built-in functions provided by the language i...	[ { "code": null, "e": 2607, "s": 2140, "text": "A function is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and a high degree of code reusing. You have already seen various functions like printf() and mai...
How to create train, test and validation samples from an R data frame?	To create predictive models, it is necessary to create three subsets of a data set for the purpose of training the model, testing the model and checking the validation of the model. These subsets are usually called train, test and validation. For this purpose, we can use different type of sampling methods and the most ...	[ { "code": null, "e": 1463, "s": 1062, "text": "To create predictive models, it is necessary to create three subsets of a data set for the purpose of training the model, testing the model and checking the validation of the model. These subsets are usually called train, test and validation. For this p...
How to make two plots side-by-side using Python?	Using subplot(row, col, index) method, we can split a figure in row*col parts, and can plot the figure at the index position. In the following program, we will create two diagrams in a single figure. Creating x, y1, y2 points using numpy. Creating x, y1, y2 points using numpy. With nrows = 1, ncols = 2, index = 1, add ...	[ { "code": null, "e": 1262, "s": 1062, "text": "Using subplot(row, col, index) method, we can split a figure in row*col parts, and can plot the figure at the index position. In the following program, we will create two diagrams in a single figure." }, { "code": null, "e": 1301, "s": 1...
Random password generator in C - GeeksforGeeks	20 Jan, 2021 In this article, we will discuss how to generate a random password of a given length consists of any characters. Approach: The below-given program involves basic concepts like variables, data types, array, loop, etc. Follow the below steps to solve this problem:Take the length of the password and declare a...	[ { "code": null, "e": 24431, "s": 24403, "text": "\n20 Jan, 2021" }, { "code": null, "e": 24544, "s": 24431, "text": "In this article, we will discuss how to generate a random password of a given length consists of any characters." }, { "code": null, "e": 24554, "s...
Power BI: Implement AND/OR Selection \| by ZhongTr0n \| Towards Data Science	Power BI is really growing on me. Using this software everyday, I am amazed by the capabilities of this product and the way it improves month after month by adding new features or optimizing current capabilities. However, like any software solution, there is still room for improvement and a lack of some features that w...	[ { "code": null, "e": 384, "s": 171, "text": "Power BI is really growing on me. Using this software everyday, I am amazed by the capabilities of this product and the way it improves month after month by adding new features or optimizing current capabilities." }, { "code": null, "e": 725, ...
Apache Presto - Configuration Settings	This chapter will discuss the configuration settings for Presto. The Presto Verifier can be used to test Presto against another database (such as MySQL), or to test two Presto clusters against each other. Open MySQL server and create a database using the following command. create database test Now you have created “te...	[ { "code": null, "e": 2071, "s": 2006, "text": "This chapter will discuss the configuration settings for Presto." }, { "code": null, "e": 2211, "s": 2071, "text": "The Presto Verifier can be used to test Presto against another database (such as MySQL), or to test two Presto cluste...
Operating System - Quick Guide	An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers. Some p...	[ { "code": null, "e": 2228, "s": 1914, "text": "An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and cont...
Java Math	The Java Math class has many methods that allows you to perform mathematical tasks on numbers. The Math.max(x,y) method can be used to find the highest value of x and y: Math.max(5, 10); Try it Yourself » The Math.min(x,y) method can be used to find the lowest value of x and y: Math.min(5, 10); Try it Yourself » ...	[ { "code": null, "e": 95, "s": 0, "text": "The Java Math class has many methods that allows you to perform mathematical tasks on numbers." }, { "code": null, "e": 170, "s": 95, "text": "The Math.max(x,y) method can be used to find the highest value of x and\ny:" }, { "code...
What is a virtual base class in C++?	The virtual base class is used when a derived class has multiple copies of the base class. #include <iostream> using namespace std; class B { public: int b; }; class D1 : public B { public: int d1; }; class D2 : public B { public: int d2; }; class D3 : public D1, public D2 { public: int d3; }; int main(...	[ { "code": null, "e": 1153, "s": 1062, "text": "The virtual base class is used when a derived class has multiple copies of the base class." }, { "code": null, "e": 1662, "s": 1153, "text": "#include <iostream>\nusing namespace std;\nclass B {\n public: int b;\n};\n\nclass D1 : p...
Slope charts with Python’s Matplotlib \| by Thiago Carvalho \| Towards Data Science	With a straightforward format that can effortlessly illustrate changes and rank variables, Slope charts are more than just an over-glorified line chart. They have earned their place in data visualization and can be a great addition to your reports and dashboards. In this article, we’ll explore how to plot them with Mat...	[ { "code": null, "e": 325, "s": 172, "text": "With a straightforward format that can effortlessly illustrate changes and rank variables, Slope charts are more than just an over-glorified line chart." }, { "code": null, "e": 436, "s": 325, "text": "They have earned their place in d...
Sorting Objects in Python. Sorting Objects of the same Class \| by Sadrach Pierre, Ph.D. \| Towards Data Science	In computer science, classes are blueprints for defining objects with related attributes and methods. A common task in computer science is sorting data structures based on attributes. In this post, we will discuss how to sort objects of the same class based on attribute values. Let’s get started! Suppose we have a clas...	[ { "code": null, "e": 451, "s": 172, "text": "In computer science, classes are blueprints for defining objects with related attributes and methods. A common task in computer science is sorting data structures based on attributes. In this post, we will discuss how to sort objects of the same class bas...
Interactive Geospatial Data Visualization with Geoviews in Python \| by Abdishakur \| Towards Data Science	Interactive Data Visualization has become an integral part of the Data Science process in order to experiment and carry out the first explorative process in data science. There are few options to visualize Geographic data interactively in the Python ecosystem, However, I think Geoviews offers both an easy to use High-l...	[ { "code": null, "e": 534, "s": 171, "text": "Interactive Data Visualization has become an integral part of the Data Science process in order to experiment and carry out the first explorative process in data science. There are few options to visualize Geographic data interactively in the Python ecosy...
Create your first ETL Pipeline in Apache Spark and Python \| by Adnan Siddiqi \| Towards Data Science	In this post, I am going to discuss Apache Spark and how you can create simple but robust ETL pipelines in it. You will learn how Spark provides APIs to transform different data format into Data frames and SQL for analysis purpose and how one data source could be transformed into another without any hassle. According t...	[ { "code": null, "e": 480, "s": 171, "text": "In this post, I am going to discuss Apache Spark and how you can create simple but robust ETL pipelines in it. You will learn how Spark provides APIs to transform different data format into Data frames and SQL for analysis purpose and how one data source ...
Embedding Tableau in Streamlit. How to view your Tableau dashboard on... \| by Okoh Anita \| Towards Data Science	As 2020 draws to its ends (hopefully along with its chaos), I took a step back to reminisce about all the tools/skills I have picked up this year and all the tools I really didn’t use so much this year. One tool I really didn’t use so much is Tableau. Tableau is a powerful data visualization tool that creates visually-...	[ { "code": null, "e": 424, "s": 172, "text": "As 2020 draws to its ends (hopefully along with its chaos), I took a step back to reminisce about all the tools/skills I have picked up this year and all the tools I really didn’t use so much this year. One tool I really didn’t use so much is Tableau." ...
How to Get Data from APIs with Python 🐍 \| by Jeff Hale \| Towards Data Science	It’s a bit of a cliche to say that data is the new oil. I like to think of it more as a renewable resource like wind.💨 Whatever energy source you choose as your metaphor, you want to harness some of its power! ⚡️ Ideally, you have direct access to the data you want in a file or a database you control. When that’s not ...	[ { "code": null, "e": 384, "s": 171, "text": "It’s a bit of a cliche to say that data is the new oil. I like to think of it more as a renewable resource like wind.💨 Whatever energy source you choose as your metaphor, you want to harness some of its power! ⚡️" }, { "code": null, "e": 579,...
Kth Smallest Element in a BST in Python	Suppose we have a binary search tree. We have to find the Kth smallest element in that BST. So if the tree is like − So if we want to find 3rd smallest element, then k = 3, and result will be 7. To solve this, we will follow these steps − create one empty list called nodes call solve(root, nodes) return k – 1th element...	[ { "code": null, "e": 1179, "s": 1062, "text": "Suppose we have a binary search tree. We have to find the Kth smallest element in that BST. So if the tree is like −" }, { "code": null, "e": 1257, "s": 1179, "text": "So if we want to find 3rd smallest element, then k = 3, and resul...
How to Sort an ArrayList of Objects by Property in Java? - GeeksforGeeks	28 Dec, 2020 ArrayList in Java (equivalent to vector in C++) having a dynamic size. It can be shrinked or expanded based on size. ArrayList is a part of the collection framework and is present in java.util package. ArrayList <E> list = new ArrayList <> (); Approach 1: In the below program, we’ve defined a CustomObject ...	[ { "code": null, "e": 23581, "s": 23553, "text": "\n28 Dec, 2020" }, { "code": null, "e": 23783, "s": 23581, "text": "ArrayList in Java (equivalent to vector in C++) having a dynamic size. It can be shrinked or expanded based on size. ArrayList is a part of the collection framewor...
Max sum in the configuration \| Practice \| GeeksforGeeks	Given an array(0-based indexing), you have to find the max sum of i*A[i] where A[i] is the element at index i in the array. The only operation allowed is to rotate(clock-wise or counter clock-wise) the array any number of times. Example 1: Input: N = 4 A[] = {8,3,1,2} Output: 29 Explanation: Above the configuration pos...	[ { "code": null, "e": 467, "s": 238, "text": "Given an array(0-based indexing), you have to find the max sum of i*A[i] where A[i] is the element at index i in the array. The only operation allowed is to rotate(clock-wise or counter clock-wise) the array any number of times." }, { "code": null...
Sentiment Analysis of Twitter’s US Airlines Data using KNN Classification \| by Momin Mehmood Butt \| Towards Data Science	Sentiment analysis refers to the use of natural language processing, text analysis, and computational linguistics to systematically identify, extract, quantify, and study effective states and subjective information. Sentiment analysis is widely applied to customer materials such as reviews and survey responses. The mos...	[ { "code": null, "e": 637, "s": 171, "text": "Sentiment analysis refers to the use of natural language processing, text analysis, and computational linguistics to systematically identify, extract, quantify, and study effective states and subjective information. Sentiment analysis is widely applied to...
What is activation function ?. One of most important parts of neural... \| by Christophe Pere \| Towards Data Science	The activation function defines the output of a neuron / node given an input or set of input (output of multiple neurons). It’s the mimic of the stimulation of a biological neuron. The output of the activation function to the next layer (in shallow neural network: input layer and output layer, and in deep network to th...	[ { "code": null, "e": 352, "s": 171, "text": "The activation function defines the output of a neuron / node given an input or set of input (output of multiple neurons). It’s the mimic of the stimulation of a biological neuron." }, { "code": null, "e": 640, "s": 352, "text": "The o...
Python Identity Operators Example	Identity operators compare the memory locations of two objects. There are two Identity operators as explained below − #!/usr/bin/python a = 20 b = 20 if ( a is b ): print "Line 1 - a and b have same identity" else: print "Line 1 - a and b do not have same identity" if ( id(a) == id(b) ): print "Line 2 - a a...	[ { "code": null, "e": 2362, "s": 2244, "text": "Identity operators compare the memory locations of two objects. There are two Identity operators as explained below −" }, { "code": null, "e": 2907, "s": 2362, "text": "#!/usr/bin/python\n\na = 20\nb = 20\n\nif ( a is b ):\n print ...
Creating SVG Image using PyCairo - GeeksforGeeks	12 Nov, 2020 In this article we will see how we can create SVG file using PyCairo in Python. SVG : An SVG file is a graphics file that uses a two-dimensional graphic vector format that defines images using an XML-based text format. As a standard format for showing vector graphics on the web, SVG files are developed. P...	[ { "code": null, "e": 24190, "s": 24162, "text": "\n12 Nov, 2020" }, { "code": null, "e": 24271, "s": 24190, "text": "In this article we will see how we can create SVG file using PyCairo in Python. " }, { "code": null, "e": 24496, "s": 24271, "text": "SVG : An ...
Writing data to a file using BufferedWriter class in Java	The BufferedWriter class of Java is used to write a stream of characters to the specified destination (character-output stream). It initially stores all the characters in a buffer and pushes the contents of the buffer to the destination, making the writing of characters, arrays and Strings efficient. You can specify th...	[ { "code": null, "e": 1364, "s": 1062, "text": "The BufferedWriter class of Java is used to write a stream of characters to the specified destination (character-output stream). It initially stores all the characters in a buffer and pushes the contents of the buffer to the destination, making the writ...
PL/SQL - Procedures	In this chapter, we will discuss Procedures in PL/SQL. A subprogram is a program unit/module that performs a particular task. These subprograms are combined to form larger programs. This is basically called the 'Modular design'. A subprogram can be invoked by another subprogram or program which is called the calling pr...	[ { "code": null, "e": 2392, "s": 2065, "text": "In this chapter, we will discuss Procedures in PL/SQL. A subprogram is a program unit/module that performs a particular task. These subprograms are combined to form larger programs. This is basically called the 'Modular design'. A subprogram can be invo...
What is C unconditional jump statements?	C programming language allows jumping from one statement to another. It also supports break, continue, return and go to jump statements. It is a keyword which is used to terminate the loop (or) exit from the block. The control jumps to next statement after the loop (or) block. break is used with for, while, do-while an...	[ { "code": null, "e": 1199, "s": 1062, "text": "C programming language allows jumping from one statement to another. It also supports break, continue, return and go to jump statements." }, { "code": null, "e": 1277, "s": 1199, "text": "It is a keyword which is used to terminate th...
Java.net.URLEncoder class in Java - GeeksforGeeks	16 Jun, 2017 This class is a utility class for HTML form encoding. Encoding makes the form of URL more reliable and secure. When the user request is triggered by a get method, the form parameters and their values are appended at the end of URL after a ‘?’ sign. The problem arises when special characters are used for th...	[ { "code": null, "e": 23581, "s": 23553, "text": "\n16 Jun, 2017" }, { "code": null, "e": 24260, "s": 23581, "text": "This class is a utility class for HTML form encoding. Encoding makes the form of URL more reliable and secure. When the user request is triggered by a get method, ...
How to get the Daily News using Python \| by Mukundan Sankar \| Towards Data Science	Did you ever wonder how you can get the latest news programmatically? News API is one such module in Python which helps you in this. It has data from about 120 sources including Reuters, BBC News, ABC News, ESPN. newsapi.org Firstly, get the API key from NewsAPI to begin extracting news articles. You can see more on ho...	[ { "code": null, "e": 384, "s": 171, "text": "Did you ever wonder how you can get the latest news programmatically? News API is one such module in Python which helps you in this. It has data from about 120 sources including Reuters, BBC News, ABC News, ESPN." }, { "code": null, "e": 396, ...
Speed up your Pandas Processing with Swifter \| by Cornellius Yudha Wijaya \| Towards Data Science	As a Pythonist Data Scientist, your daily job would involve a lot of data processing and feature engineering using the Pandas package. From analyzing data to create a new feature to gain insight, forcing you to execute many different codes repeatedly. The problem is the bigger your data, the longer time to finish runni...	[ { "code": null, "e": 513, "s": 171, "text": "As a Pythonist Data Scientist, your daily job would involve a lot of data processing and feature engineering using the Pandas package. From analyzing data to create a new feature to gain insight, forcing you to execute many different codes repeatedly. The...
Java Examples - Multiple exception (divided by zero)	How to use handle multiple exceptions (devided by zero) ? This example shows how to handle multiple exceptions while deviding by zero ? public class Main { public static void main (String args[]) { int array[] = {20,20,40}; int num1 = 15, num2 = 0; int result = 0; try { result = num1...	[ { "code": null, "e": 2126, "s": 2068, "text": "How to use handle multiple exceptions (devided by zero) ?" }, { "code": null, "e": 2204, "s": 2126, "text": "This example shows how to handle multiple exceptions while deviding by zero ?" }, { "code": null, "e": 2806, ...
How do I insert a NULL value in MySQL?	To insert a NULL value, you can use UPDATE command. Following is the syntax − UPDATE yourTableName SET yourColumnName=NULL; Let us first create a table − mysql> create table insertNullValue -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> ClientName varchar(100), -> ClientCountryName varchar(20) ->...	[ { "code": null, "e": 1140, "s": 1062, "text": "To insert a NULL value, you can use UPDATE command. Following is the syntax −" }, { "code": null, "e": 1186, "s": 1140, "text": "UPDATE yourTableName SET yourColumnName=NULL;" }, { "code": null, "e": 1216, "s": 1186, ...
Plotting charts with Seaborn. Create attractive, intriguing charts... \| by Jenny Dcruz \| Towards Data Science	Seaborn is a powerful Python library which was created for enhancing data visualizations. It provides a large number of high-level interfaces to Matplotlib. Seaborn works well with dataframes while Matplotlib doesn’t. It lets you plot striking charts in a much simpler way. For better understanding of this article, you ...	[ { "code": null, "e": 446, "s": 172, "text": "Seaborn is a powerful Python library which was created for enhancing data visualizations. It provides a large number of high-level interfaces to Matplotlib. Seaborn works well with dataframes while Matplotlib doesn’t. It lets you plot striking charts in a...
Java Examples - Display hour and minute	How to display hour and minute (current time)? This example demonstrates how to display the hour and minute of that moment by using Calender.getInstance() of Calender class. import java.util.Calendar; import java.util.Formatter; public class MainClass{ public static void main(String args[]) { Formatter fmt = ...	[ { "code": null, "e": 2115, "s": 2068, "text": "How to display hour and minute (current time)?" }, { "code": null, "e": 2242, "s": 2115, "text": "This example demonstrates how to display the hour and minute of that moment by using Calender.getInstance() of Calender class." }, ...
Equal Sum and XOR of three Numbers - GeeksforGeeks	17 Aug, 2021 Given an integer N. The task is to count the numbers of pairs of integers A and B such that A + B + N = A ^ B ^ N and A and B are less than N.Examples: Input: N = 2 Output: 3 Explanation:- For N = 2 2 XOR 0 XOR 0 = 2+0+0 2 XOR 0 XOR 1 = 2+0+1 2 XOR 0 XOR 2 != 2+0+2 2 XOR 1 XOR 0 = 2+1+0 2 XOR 1 XOR 1 != ...	[ { "code": null, "e": 25036, "s": 25008, "text": "\n17 Aug, 2021" }, { "code": null, "e": 25190, "s": 25036, "text": "Given an integer N. The task is to count the numbers of pairs of integers A and B such that A + B + N = A ^ B ^ N and A and B are less than N.Examples: " }, {...
Check if the given push and pop sequences of Stack is valid or not - GeeksforGeeks	14 May, 2021 Given push[] and pop[] sequences with distinct values. The task is to check if this could have been the result of a sequence of push and pop operations on an initially empty stack. Return “True” if it otherwise returns “False”.Examples: Input: pushed = { 1, 2, 3, 4, 5 }, popped = { 4, 5, 3, 2, 1 } Output...	[ { "code": null, "e": 25695, "s": 25667, "text": "\n14 May, 2021" }, { "code": null, "e": 25934, "s": 25695, "text": "Given push[] and pop[] sequences with distinct values. The task is to check if this could have been the result of a sequence of push and pop operations on an initi...
How to count the number of documents in a MongoDB collection?	Following is the syntax to count the number of documents in a MongoDB collection let anyVariableName= db.getCollection(‘yourCollectionName’); yourVariableName.count(); Let us first create a collection with documents > db.countNumberOfDocumentsDemo.insertOne({"CustomerName":"Bob"}); { "acknowledged" : true, "inser...	[ { "code": null, "e": 1143, "s": 1062, "text": "Following is the syntax to count the number of documents in a MongoDB collection" }, { "code": null, "e": 1230, "s": 1143, "text": "let anyVariableName= db.getCollection(‘yourCollectionName’);\nyourVariableName.count();" }, { ...
Joining Datasets with Python’s Pandas \| by Thiago Carvalho \| Towards Data Science	It’s definitely not uncommon to work with more than one dataset when performing your analysis. Therefore, there’s an abundant amount of methods to bring this data together. SQL call those operations ‘Joins’ or ‘Unions’; in other languages and tools, you may find functions like Merge or LookUp to do the job. In this art...	[ { "code": null, "e": 220, "s": 47, "text": "It’s definitely not uncommon to work with more than one dataset when performing your analysis. Therefore, there’s an abundant amount of methods to bring this data together." }, { "code": null, "e": 356, "s": 220, "text": "SQL call those...
How to eliminate repeated lines in a python function?	Let us name the given text file as bar.txt We use file handling methods in python to remove duplicate lines in python text file or function. The text file or function has to be in the same directory as the python program file. Following code is one way of removing duplicates in a text file bar.txt and the output is sto...	[ { "code": null, "e": 1105, "s": 1062, "text": "Let us name the given text file as bar.txt" }, { "code": null, "e": 1489, "s": 1105, "text": "We use file handling methods in python to remove duplicate lines in python text file or function. The text file or function has to be in th...
Customizing Fonts in Flutter - GeeksforGeeks	11 Feb, 2021 Customization is everywhere, from documents to apps, we can customize everything as we want to. The power of customization is humongous, that it has revolutionized the way we look at technology in this world. Just like how printing “Hello World”, is the basic step towards learning a new programming languag...	[ { "code": null, "e": 25549, "s": 25521, "text": "\n11 Feb, 2021" }, { "code": null, "e": 25985, "s": 25549, "text": "Customization is everywhere, from documents to apps, we can customize everything as we want to. The power of customization is humongous, that it has revolutionized...
Stock predictions with Transformer and Time Embeddings \| Towards Data Science	In my previous post, I have shared my first research results for predicting stock prices which will be subsequently used as input for a deep learning trading bot. While upscaling my datasets to thousands of equity tickers equating to almost 1 Terabyte of stock price histories and news articles, I have come to realize t...	[ { "code": null, "e": 779, "s": 171, "text": "In my previous post, I have shared my first research results for predicting stock prices which will be subsequently used as input for a deep learning trading bot. While upscaling my datasets to thousands of equity tickers equating to almost 1 Terabyte of ...
Delegation in Kotlin - GeeksforGeeks	27 Jul, 2020 Delegation controls the allocation of power/authority from an instance to another for any object. For classes and functions implementations, delegations can be used on static as well as mutable relations between them. Inheritance implementation in classes and functions can be altered with the help of deleg...	[ { "code": null, "e": 24518, "s": 24490, "text": "\n27 Jul, 2020" }, { "code": null, "e": 24994, "s": 24518, "text": "Delegation controls the allocation of power/authority from an instance to another for any object. For classes and functions implementations, delegations can be use...