Tutorial by Examples: reat

We will see stream objects being returned by modules like fs etc but what if we want to create our own streamable object. To create Stream object we need to use the stream module provided by NodeJs var fs = require("fs"); var stream = require("stream").Writable; ...

The Binary Search Tree (BST) is a hierarchical data structure with a single pointer to the root node. The Node in the BST generally contains "items" (such as numbers or names) for fast look up. Each node has at-most two children (left and right). Every node is organized by some key data f...

Core Graphics context A Core Graphics context is a canvas which we can draw in it and set some properties like the line thickness. Making a context To make a context, we use the UIGraphicsBeginImageContextWithOptions() C function. Then, when we are done with drawing, we just call UIGraphicsEn...

This tutorial assumes you already have a working OpenGL environment with all necessary libraries and headers available. #include <GL\glew.h> //Include GLEW for function-pointers etc. #include <GLFW\GLFW3.h> //Include GLFW for windows, context etc. //Impor...

Before continuing, make sure you've read the Installation chapter and can access your new Symfony app in the browser. Suppose you want to create a page - /lucky/number - that generates a lucky (well, random) number and prints it. To do that, create a "Controller class" and a "con...

A very simple example would be to fade out an SKSpriteNode. In Swift: let node = SKSpriteNode(imageNamed: "image") let action = SKAction.fadeOutWithDuration(1.0) node.runAction(action)

Sometimes it is necessary to do an action on repeat or in a sequence. This example will make the node fade in and out a total of 3 times. In Swift: let node = SKSpriteNode(imageNamed: "image") let actionFadeOut = SKAction.fadeOutWithDuration(1.0) let actionFadeIn = SKAction.fadeInWithD...

You can use Firebase Authentication to let your users authenticate with Firebase using their email addresses and passwords, and to manage your app's password-based accounts. In this example, we use these steps to set it up for our Android project which is based on JavaScript. But before doing so, ...

Installers are custom types that implement the IWindsorInstaller interface and are used to register Components to the container, using the fluent registration API. public class MyInstaller : IWindsorInstaller { public void Install(IWindsorContainer container, IConfigurationStore store) {...

<PropertyGroup> <DirectoryToCreate>NewDirectory</DirectoryToCreate> </PropertyGroup> <MakeDir Directories="$(DirectoryToCreate)" />

Putting UIAutomator tests together to a test suite is a quick thing: package de.androidtest.myapplication; import org.junit.runner.RunWith; import org.junit.runners.Suite; @RunWith(Suite.class) @Suite.SuiteClasses({InterAppTest1.class, InterAppTest2.class}) public class AppTestSuite {} ...

This can be useful if you're writing a game or something that needs to execute a piece of code every a few seconds. import android.os.Handler; public class Timer { private Handler handler; private boolean paused; private int interval; private Runnable task = new Runnable ...

Open "Database Tool Window" if you don't have it opened: This what it looks like: Create new data source: By clicking on "+" icon: Or by opening "Data Sources and Drivers" dialog And adding new data source by clicking "+" there If you ...

find(query).projection(fields).cursorType(CursorType.TailableAwait).iterator(); That code applies to the MongoCollection class. CursorType is an enum and it has the following values: Tailable TailableAwait Corresponding to the old (<3.0) DBCursor addOption Bytes types: Bytes.QUERYOPTION...

The simplest shortcode is the self-closing one. We’re going to create a simple link to our Twitter account, and then add it in a blog post. All the code goes in functions.php, which is located in /wp-content/themes/your-theme/. If you don’t have one, just create it and put the code in it. <?php...

Creating a self-closing shortcode with parameters <?php function button_shortcode( $type ) { extract( shortcode_atts( array( 'type' => 'value' ), $type ) ); // check what type user entered switch ($type) { case 'twitter': ...

enclosing shortcode The enclosing shortcode allows you to embed content within your shortcode, just like BBCode if you’ve ever used that. <?php function button_shortcode( $attr, $content = null ) { return '<a href="http://twitter.com/filipstefansson" class="twitter-button&qu...

jHipster allows you to bootstrap a Spring Boot web application with a REST API back-end and a AngularJS and Twitter Bootstrap front-end. More on jHipster here: jHipster Documentation Install brew: /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/inst...

When using instances of QML files by directly declaring them, every property creates a binding. This is explained in the above examples. This is how you dynamically create components: var component = Qt.createComponent("Popup.qml"); var popup = component.createObject(parent, {"widt...

Lets start with creating our first app Open visual studio and > create new project Enter Name and Location Enter your developer site url created in previous step and select Provider-hosted Popup will open which will as for login Next step it will as for type of applicatio...