Tutorial by Examples: s

Installation or Setup

To create and manage Heroku apps locally you'll need the Heroku Toolbelt, here are some ways to get it. Download Download the Heroku Toolbelt installer from Heroku's website. Homebrew Install heroku with brew: brew install heroku Debian/Ubuntu Run this script: wget -O- https://toolbelt.her...

Transition shorthand

CSS div{ width: 150px; height:150px; background-color: red; transition: background-color 1s; } div:hover{ background-color: green; } HTML <div></div> This example will change the background color when the div is hovered the background-color change will...

Simple Active Patterns

Active patterns are a special type of pattern matching where you can specify named categories that your data may fall into, and then use those categories in match statements. To define an active pattern that classifies numbers as positive, negative or zero: let (|Positive|Negative|Zero|) num = ...

HTML 4.01 Doctypes

The HTML 4.01 specification provides several different types of doctypes that allow different types of elements to be specified within the document. HTML 4.01 Strict <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> Includes all...

Inline SVG

Inline SVG allows SVG markup, written within HTML, to generate graphics in the browser. When using SVG inline, a DOCTYPE is not strictly required. Instead just the <svg> opening and closing tags together with either a viewBox or width and height attributes will suffice: <svg width="1...

Installation or Setup

Detailed instructions on getting apache set up or installed. Ubuntu Installation sudo apt-get install apache2 Windows Installation Check out the WAMP stack. WAMP stands for Windows, Apache, MySQL, PhpMyAdmin. CentOS Installation Apache 2.2 comes with CentOS6, whereas 2.4 comes with Cen...

Creating and consuming custom directives

Directives are one of the most powerful features of angularjs. Custom angularjs directives are used to extend functionality of html by creating new html elements or custom attributes to provide certain behavior to an html tag. directive.js // Create the App module if you haven't created it yet va...

Installation or Setup

There are two common ways to install Groovy. Download The Groovy binary can be downloaded on the download page of the Groovy website. You can unpack archive and add path to %GROOVY_HOME%/bin/groovy.bat to the PATH system environment variable, where %GROOVY_HOME% is the directory where Groovy is un...

Installation or Setup

https://vaadin.com/framework/get-started

Installation or Setup

Detailed instructions on getting orchardcms set up or installed.

Smoother loading of items

If the items in your RecyclerView load data from the network (commonly images) or carry out other processing, that can take a significant amount of time and you may end up with items on-screen but not fully loaded. To avoid this you can extend the existing LinearLayoutManager to preload a number of...

Setup

Google AppEngine (GAE) is a Platform as a Service (PaaS) that provides the ability to deploy applications at "Google Scale". It is one of the many services on Google Cloud Platform (GCP). Developers can integrate other services such as Google Cloud Storage (GCS) and Google Cloud SQL on GC...

Show 'Hello World' using the VCL

This progam uses VCL, the default UI components library of Delphi, to print "Hello World" into a message box. The VCL wrapps most of the commonly used WinAPI components. This way, they can be used much easier, e.g. without the need to work with Window Handles. To include a dependency (lik...

Installation or Setup

Visual Studio can be downloaded and installed for free in Comunity edition from the Microsoft site and can be also found in different versions. Just click on the Download button and run the executable, then follow the instructions.

Do not name a variable with an existing function name

There is already a function sum(). As a result, if we name a variable with the same name sum = 1+3; and if we try to use the function while the variable still exists in the workspace A = rand(2); sum(A,1) we will get the cryptic error: Subscript indices must either be real positive integer...

Installation or Setup

rx-java set up Gradle compile 'io.reactivex:rxjava2:rxjava:2.1.1' Maven <dependency> <groupId>io.reactivex.rxjava2</groupId> <artifactId>rxjava</artifactId> <version>2.1.1</version> </dependency> Ivy <dependency...

Creating a new project in Visual Studio (console application) and Running it in Debug mode

Download and install Visual Studio. Visual Studio can be downloaded from VisualStudio.com. The Community edition is suggested, first because it is free, and second because it involves all the general features and can be extended further. Open Visual Studio. Welcome. Go to File → New ...

Combining selectors

Consider following DOM Structure <ul class="parentUl"> <li> Level 1 <ul class="childUl"> <li>Level 1-1 <span> Item - 1 </span></li> <li>Level 1-1 <span> Item - 2 </span></li&gt...

Basic Loop

for is the only loop statement in go, so a basic loop implementation could look like this: // like if, for doesn't use parens either. // variables declared in for and if are local to their scope. for x := 0; x < 3; x++ { // ++ is a statement. fmt.Println("iteration", x) } //...
Go • Loops

Listening for SharedPreferences changes

SharedPreferences sharedPreferences = ...; sharedPreferences.registerOnSharedPreferenceChangeListener(mOnSharedPreferenceChangeListener); private final SharedPreferences.OnSharedPreferenceChangeListener mOnSharedPreferenceChangeListener = new SharedPreferences.OnSharedPreferenceChangeListener(...

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