Tutorial by Examples: w

Mock with defaults

While a simple mock returns null (or defaults for primitives) to every call, it is possible to change that behaviour. Dependency mock = Mockito.mock(Dependency.class, new Answer() { @Override public Object answer(InvocationOnMock invocationOnMock) throws Throwable { ...

mockito • Mock

Checking a string for unwanted characters

As a developer, you frequently find yourself dealing with strings that are not created by your own code. These will often be supplied by third party libraries, external systems, or even end users. Validating strings of unclear provenance is considered to be one of the hallmarks of defensive program...

guava • Strings

Define custom variable for all views

module.exports.routes = { // This function will be executed for all http verbs on all urls 'all /*', function (req, res, next) { // Expose the function `fooBar` to all views (via the locals object) res.locals.fooBar = function (arg1) { return 'foobar' + arg1; }; }, };...

sails.js • Routing

Skip assets (urls with dots in them) from wildcard route

module.exports.routes = { 'GET /foo/*': { fn: function(req, res) { res.send("FOO!"); }, skipAssets: true }, };

sails.js • Routing

Using Extension methods with Static methods and Callbacks

Consider using Extension Methods as Functions which wrap other code, here's a great example that uses both a static method and and extension method to wrap the Try Catch construct. Make your code Bullet Proof... using System; using System.Diagnostics; namespace Samples { /// <summary&g...

C# Language • Extension Methods

Async & Await

async and await are two operators that are intended to improve performance by freeing up Threads and waiting for operations to complete before moving forward. Here's an example of getting a string before returning it's length: //This method is async because: //1. It has async and Task or Task<...

C# Language • C# 5.0 Features

Hello World in PowerShell

Write-Host "Hello World" Introduction to PowerShell

.NET Framework • Getting started with .NET Framework

Hello World in Nemerle

System.Console.WriteLine("Hello World");

.NET Framework • Getting started with .NET Framework

Hello World in Oxygene

namespace HelloWorld; interface type App = class public class method Main(args: array of String); end; implementation class method App.Main(args: array of String); begin Console.WriteLine('Hello World'); end; end.

.NET Framework • Getting started with .NET Framework

Hello World in Boo

print "Hello World"

.NET Framework • Getting started with .NET Framework

Gui with functions instead of labels

Example showing how to create Guis using functions instead of labels. Gui, Add, Button, gCtrlEvent vButton1, Button 1 Gui, Add, Button, gCtrlEvent vButton2, Button 2 Gui, Add, Button, gGoButton, Go Button Gui, Add, Edit, vEditField, Example text Gui, Show,, Functions instead of labels CtrlEv...

AutoHotkey • Use functions instead of labels

Enable multithreading with Caffe

Caffe can run on multiple cores. One way is to enable multithreading with Caffe to use OpenBLAS instead of the default ATLAS. To do so, you can follow these three steps: sudo apt-get install -y libopenblas-dev Before compiling Caffe, edit Makefile.config, replace BLAS := atlas by BLAS := open A...

caffe • Getting started with caffe

Hello world

After adding PrimeFaces to your JSF project, you can start using it in your pages using the namespace: xmlns:p="http://primefaces.org/ui" or, for PrimeFaces Mobile: xmlns:p="http://primefaces.org/mobile" This example should render a spinner: <html xmlns="http...

primefaces • Getting started with primefaces

Exclusive write / Concurrent read access

It is sometimes required for a process to concurrently write and read the same "data". The ReadWriteLock interface, and its ReentrantReadWriteLock implementation allows for an access pattern that can be described as follow : There can be any number of concurrent readers of the data. If...

Java Language • Concurrent Programming (Threads)

How to declare, write and use a simple service in Symfony2

Services declaration : # src/Acme/YourBundle/Resources/config/services.yml services: my_service: class: Acme\YourBundle\Service\MyService arguments: ["@doctrine", "%some_parameter%", "@another_service"] another_service: class: Ac...

symfony2 • Symfony Services

To switch to a frame using Java

For an instance, if the html source code of an html view or element is wrapped by an iframe like this: <iframe src="../images/eightball.gif" name="imgboxName" id="imgboxId"> <p>iframes example</p> <a href="../images/redball.gif" t...

selenium-webdriver • Switching Frames

Automatic Package Management with el-get

el-get is an open source package management system for GNU Emacs. el-get works with melpa, as well as with many common version control systms. Its documentation includes a simple self-installer for your .emacs: (unless (require 'el-get nil t) (url-retrieve "https://raw.github.com/dim...

emacs • Package Management

When to use parfor

Basically, parfor is recommended in two cases: lots of iterations in your loop (i.e., like 1e10), or if each iteration takes a very long time (e.g., eig(magic(1e4))). In the second case you might want to consider using spmd . The reason parfor is slower than a for loop for short ranges or fast itera...

MATLAB Language • Multithreading

Composition with binary function

The regular composition works for unary functions. In the case of binary, we can define (f .: g) x y = f (g x y) -- which is also = f ((g x) y) = (f . g x) y -- by definition of (.) = (f .) (g x) y = ((f .) . g) x y Thus,...

Haskell Language • Function composition

What are extensions and when to use them

Extensions add new functionality to an existing class, structure, enumeration, or protocol type. This includes the ability to extend types for which you do not have access to the original source code. Extensions in Swift can: Add computed properties and computed type properties Define instance ...

Swift Language • Extensions