Programming Scripts Articles - Page 4 of 37

Animations have become a very integral part of website interfaces in today's web development world. They help in enhancing the user experience of a website and in this article, we will learn how we can make use of Velocity.js to add beautiful animations to our web pages. VelocityJS is a JavaScript animation engine that provides us with very fast performing animations that we can use in our web pages. It has become one of the leading animation engines and there are different reasons for its success. I have mentioned some of the most important reasons that make it a very ... Read More

AOS.js (Animation on Scroll) is an animation-providing JavaScript library that makes it easier to add tons of animations by simply changing the name of the class in the div tag in which you want to add an animation. While there are different animation JavaScript libraries out there, AOS.js is probably the simplest of them. In this tutorial, we will explore different types of animations that we can use in AOS.js with the help of different examples. The first category of animations that we will explore are the fading one's. Before we do that, we first need to make sure that ... Read More

The "&" and "&&" operators are both logical AND operators in most programming languages, but they can behave differently in certain circumstances. Both "&" and "&&" are operators used for evaluating conditional statements. The most basic difference between the two is that the "&" operator is a logical as well as a bitwise operator, whereas the "&&" operator is only a logical operator. Read this article to find out more about these two operators and how they are different from each other. Let's start with a basic overview of "&" and "&&" operators. What is "&" Operator? The & operator ... Read More

Both ASP and ASP.NET are the widely used languages for application and mainly the frontEnd development. Both the languages used for dynamic generation of web pages. The content generated through server-side scripting is then sent to the client’s web browser.Following are the important differences between ASP and ASP.NET.Sr. No.KeyASPASP.NET1DefinitionASP or also popularly known as Classic ASP developed by Microsoft is first Server-side scripting engine which is used for dynamic generation of web pages.ASP.NET, on the other hand, is a server-side web framework, open-source, which is designed for the generation of dynamic web pages.2Language typeASP is interpreted language that means the ... Read More

Relational AlgebraRelational algebra is a procedural query language, which takes instances of relations as input and yields instances of relations as output. It uses operators to perform queries. An operator can be either unary or binary. They accept relations as their input and yield relations as their output. Relational algebra is performed recursively on a relation and intermediate results are also considered relations.The fundamental operations of relational algebra are as follows -SelectProjectUnionSet differentCartesian productRenameRelational CalculusIn contrast to Relational Algebra, Relational Calculus is a non-procedural query language, that is, it tells what to do but never explains how to do it.Relational ... Read More

Parse server is an open source and is like mobile back-end. It is owned by Facebook since 2013. This server may be deployed to any infrastructure that may run Node.Js and MongoDB. This article explains about – How To Install Parse Server on Ubuntu.Prerequisitespython-software-properties packageNode.jsMongoDBTo add python-software-properties package, use the following command-$ sudo apt-get install build-essential git python-software-propertiesThe sample output should be like this –Reading package lists... Done Building dependency tree Reading state information... Done build-essential is already the newest version (12.1ubuntu2). build-essential set to manually installed. The following packages were automatically installed and are no longer required:    linux-headers-4.4.0-31 ... Read More

As you decide on the factors affecting your choices, you can now narrow down from the technology options available to a controllable set. It is imperative for startups to take on best practices along with choosing the right technology (tech.) stacks for their business to grow.Typical Tech StackApplications have two ends – the front-end (client side) and the back-end (server side). For eg. on the server side, the applications could be the operating system, the web server, database, programming language and the web framework. These are stacked one on the top of the other with the web framework at the ... Read More

Pod is a simple-to-use markup language used for writing documentation for Perl, Perl programs, and Perl modules. There are various translators available for converting Pod to various formats like plain text, HTML, man pages, and more. Pod markup consists of three basic kinds of paragraphs −Ordinary Paragraph − You can use formatting codes in ordinary paragraphs, for bold, italic, code-style , hyperlinks, and more.Verbatim Paragraph − Verbatim paragraphs are usually used for presenting a codeblock or other text which does not require any special parsing or formatting, and which shouldn't be wrapped.Command Paragraph − A command paragraph is used for ... Read More

Perl kill('KILL', (Process List)) function can be used to terminate a pseudo-process by passing it the ID returned by fork().Note that using kill('KILL', (Process List)) on a pseudo-process() may typically cause memory leaks, because the thread that implements the pseudo-process does not get a chance to clean up its resources.You can use kill() function to send any other signal to target processes, for example following will send SIGINT to a process IDs 104 and 102 −#!/usr/bin/perl kill('INT', 104, 102); 1;

Perl provides a fork() function that corresponds to the Unix system call of the same name. On most Unix-like platforms where the fork() system call is available, Perl's fork() simply calls it. On some platforms such as Windows where the fork() system call is not available, Perl can be built to emulate fork() at the interpreter level.The fork() function is used to clone a current process. This call create a new process running the same program at the same point. It returns the child pid to the parent process, 0 to the child process, or under if the fork is ... Read More