Tutorial by Examples: u

Quitting GHCi

You can quit GHCi simply with :q or :quit ghci> :q Leaving GHCi. ghci> :quit Leaving GHCi. Alternatively, the shortcut CTRL+D (Cmd+D for OSX) has the same effect as :q.

Haskell Language • Using GHCi

Launch mode defines the behaviour of new or existing activity in the task. There are possible launch modes: standard singleTop singleTask singleInstance It should be defined in android manifest in <activity/> element as android:launchMode attribute. <activity android:launchM...

Android • Activity

Calling a Clojure function from Java

You can call a Clojure function from Java code by looking up the function and invoking it: IFn times = Clojure.var("clojure.core", "*"); times.invoke(2, 2); This looks up the * function from the clojure.core namespace and invokes it with the arguments 2 & 2.

clojure • Java interop

Using macro() to extend collections

The macro() function allows you to add new functionality to Illuminate\Support\Collection objects Usage: Collection::macro("macro_name", function ($parameters) { // Your macro }); For example: Collection::macro('uppercase', function () { return $this->map(function ($i...

Laravel • Collections

Case equality operator (===)

Also known as triple equals. This operator does not test equality, but rather tests if the right operand has an IS A relationship with the left operand. As such, the popular name case equality operator is misleading. This SO answer describes it thus: the best way to describe a === b is "if I ...

Ruby Language • Operators

Install Atom (and some useful packages)

Goto https://atom.io/ and install the atom editor. Then install some Atom packages for easier Titanium coding: NameTypeFeaturestitanium language javascriptLanguageJS Autocomplete (non alloy)Titanium Alloyadd-onAll-in-one packageJump to definitionOpen relatedTSS HighlightTi-Createadd-onCreate proje...

appcelerator • Getting started with appcelerator

Create your first app

We are just creating an empty Alloy app using CLI and Atom. Open a new terminal and add the following: ti create --id com.test -d . -n APPNAME -p all -t app -u http://migaweb.de cd APPNAME/ alloy new This will create a basic app (name: APPNAME, bundle identifier: com.test, type: app, platform...

appcelerator • Getting started with appcelerator

Compile your app

There are several ways to compile your app. You can use the simulator/emulator, deploy it to your device or create store apk's/ipa's. There is also a live test tool (TiShadow) which saves you a lot of time waiting for the compiler. cli way # android to device ti build -p android -T device # a...

appcelerator • Getting started with appcelerator

STDOUT

The standard output. The default value for $stdout

Ruby Language • Special Constants in Ruby

$stdout

The current standard output

Ruby Language • Special Constants in Ruby

Module as Namespace

Modules can contain other modules and classes: module Namespace module Child class Foo; end end # module Child # Foo can now be accessed as: # Child::Foo end # module Namespace # Foo must now be accessed as: # Namespace::Child::Foo

Ruby Language • Modules

Get all combinations / permutations of an array

The permutation method, when called with a block yields a two dimensional array consisting of all ordered sequences of a collection of numbers. If this method is called without a block, it will return an enumerator. To convert to an array, call the to_a method. ExampleResult[1,2,3].permutation#&lt...

Ruby Language • Arrays

Database transactions for mutliple database connection

DatabaseTransactions trait allows databases to rollback all the change during the tests. If you want to rollback multiple databases , you need to set $connectionsToTransact properties use Illuminate\Foundation\Testing\DatabaseMigrations; class ExampleTest extends TestCase { use Databas...

Laravel • Testing

Adding custom user script loaded from app bundle

let configuration = WKWebViewConfiguration() if let path = NSBundle.mainBundle().pathForResource("customUserScript", ofType: "js"), source = try? NSString(contentsOfFile: path, encoding: NSUTF8StringEncoding) as String { let userScript = WKUserScript(source...

iOS • WKWebView

Get all folders - put folders into a continuation token - then retrieve from token

function processGoogleDriveFolders() { var arrayAllFolderNames,continuationToken,folders,foldersFromToken,thisFolder;//Declare variable names arrayAllFolderNames = [];//Create an empty array and assign it to this variable name folders = DriveApp.getFolders();//Get all folders from ...

google-apps-script • DriveApp

Get all files - put them into a continuation token - then retrieve them

function processGoogleDriveFiles() { var arrayAllFileNames,continuationToken,files,filesFromToken,fileIterator,thisFile;//Declare variable names arrayAllFileNames = [];//Create an empty array and assign it to this variable name files = DriveApp.getFiles();//Get all files from Googl...

google-apps-script • DriveApp

HTML markup

example input: <html> <head> <title>the title</title> <link href='css/app.css' type='text/css' rel='stylesheet'> <script src='js/app.js'></script> </head> <body> <h1>header</h1> <div> &l...

DOM • Getting started with DOM

Select a word without surrounding white space

Suppose we want to select a word without surrounding white spaces, use the text object iw for inner word using visual mode: Got to normal mode by pressing ESC Type viw at the beginning of a word This will select the inner word

vim • Vim Text Objects

Grunt and Gulp

In ASP.NET Core apps, you bundle and minify the client-side resources during design-time using third party tools, such as Gulp and Grunt. By using design-time bundling and minification, the minified files are created prior to the application’s deployment. Bundling and minifying before deployment p...

asp.net-core • Bundling and Minification

Bundler and Minifier Extension

Visual Studio also features an available Bundler and Minifier Extension that is capable of handling this process for you. The extension allows you to easily select and bundle the files you need without writing a line of code. Building Your Bundles After installing the extension, you select all of ...

asp.net-core • Bundling and Minification