Tutorial by Topics

The branching operation of sed can help control the flow of the program.

Retrolambda is a library which allows to use Java 8 lambda expressions, method references and try-with-resources statements on Java 7, 6 or 5. The Gradle Retrolambda Plug-in allows to integrate Retrolambda into a Gradle based build. This allows for example to use these constructs in an Android appl...

A Caesar cipher is one of the simplest and most widely known encryption techniques. The names comes from Julius Caesar, who, according to Suetonius, used it with a shift of three to protect messages of military significance

A SparseArray is an alternative for a Map. A Map requires its keys to be objects. The phenomenon of autoboxing occurs when we want to use a primitive int value as key. The compiler automatically converts primitive values to their boxed types (e.g. int to Integer). The difference in memory footprint ...

The fit command can fit a user-defined function to a set of data points (x,y) or (x,y,z), using an implementation of the nonlinear least-squares (NLLS) Marquardt-Levenberg algorithm. Any user-defined variable occurring in the function body may serve as a fit parameter, but the return type of the fu...

Firebase Cloud Messaging (FCM) is a cross-platform messaging solution that lets you reliably deliver messages at no cost. Using FCM, you can notify a client app that new email or other data is available to sync. You can send notification messages to drive user reengagement and retention. For use ca...

Laravel helpers are the globally accessible functions defined by the framework. It can be directly called and independently used anywhere within the application without needing to instantiating an object or importing class. There are helpers for manipulating Arrays, Paths, Strings, URLs, etc ...

Bokeh is a Python interactive visualization library that targets modern web browsers for presentation. Its goal is to provide elegant, concise construction of novel graphics in the style of D3.js, and to extend this capability with high-performance interactivity over very large or streaming datas...

Protractor is made for testing Angular applications. However, it is still possible to test non-angular applications with Protractor if needed.

Currently .Net Core does not include support to send emails like System.Net.Mail from .Net. MailKit project (which is available on nuget) is a nice library for this purpose.

ng-view is one of in-build directive that angular uses as a container to switch between views. {info} ngRoute is no longer a part of the base angular.js file, so you'll need to include the angular-route.js file after your the base angular javascript file. We can configure a route by using the “when...

Creating a class in Pharo is as simple as sending subclass: message to another class object. But most of the classes are created and modified in a system browser (currently Nautilus).

In order for NetSuite to know how to utilize our source code, we need to be able to tell it which functions to call, when to call them, and who to call them for. We accomplish all of these with the Script and Script Deployment records.

Unlike the .NET framework, the Visual Basic for Applications library does not include routines to sort arrays. There are two types of workarounds: 1) implementing a sorting algorithm from scratch, or 2) using sorting routines in other commonly-available libraries.

Vim's built-in manual is the authoritative source of information and documentation on every Vim feature, including configurations, built-in functions, and even Vimscript. While not the most beginner-friendly interface, if you know how to look through it, you can find what you need. Start searching ...

A Three.js Mesh is a base class that inherits from Object3d and is used to instantiate polygonal objects by combining a Geometry with a Material. Mesh is also the base class for the more advanced MorphAnimMesh and SkinnedMesh classes. new THREE.Mesh(geometry, material); Both the geometr...

Package Ada.Text_IO is used for putting text or getting text from files or console.

This section provides an overview of what gstreamer is, and why a developer might want to use it. It should also mention any large subjects within gstreamer, and link out to the related topics. Since the Documentation for gstreamer is new, you may need to create initial versions of those relate...