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Consider these two micro-benchmarks: The first benchmark simply creates, starts and joins threads. The thread's Runnable does no work. public class ThreadTest { public static void main(String[] args) throws Exception { while (true) { long start = System.nanoTime(); ...

Conditions can also be expressions: $myInput = 0 switch($myInput) { # because the result of the expression, 4, # does not equal our input this block should not be run. (2+2) { 'True. 2 +2 = 4' } # because the result of the expression, 0, # does equal our input this ...

// Store a reference to the native method let open = XMLHttpRequest.prototype.open; // Overwrite the native method XMLHttpRequest.prototype.open = function() { // Assign an event listener this.addEventListener("load", event => console.log(XHR), false); // Call the s...

To install and run jboss AS standalone you can follow the processes described below(assuming that you already have java 7 and jdk installed on your mac): Download the jboss application server from here. Unzip the package and extract the folders Set up the your bash_profile like the fo...

Executors returns different type of ThreadPools catering to specific need. public static ExecutorService newSingleThreadExecutor() Creates an Executor that uses a single worker thread operating off an unbounded queue There is a difference between newFixedThreadPool(1) and newSingleThreadE...

C# 7.0 allows throwing as an expression in certain places: class Person { public string Name { get; } public Person(string name) => Name = name ?? throw new ArgumentNullException(nameof(name)); public string GetFirstName() { var parts = Name.Split(' '); ...

C# 7.0 adds accessors, constructors and finalizers to the list of things that can have expression bodies: class Person { private static ConcurrentDictionary<int, string> names = new ConcurrentDictionary<int, string>(); private int id = GetId(); public Person(string n...

Files: To determine if a file exists, simply pass the filename to the Dir$ function and test to see if it returns a result. Note that Dir$ supports wild-cards, so to test for a specific file, the passed pathName should to be tested to ensure that it does not contain them. The sample below raises an...

The Runtime.exec(String ...) and Runtime.exec(String) methods allow you to execute a command as an external process1. In the first version, you supply the command name and the command arguments as separate elements of the string array, and the Java runtime requests the OS runtime system to start th...

This is another name for sample aspect ratio and should be avoided, as the natural acronym (PAR) conflicts with picture aspect ratio.

average() is defined for Byte, Int, Long, Short, Double, Float and always returns Double: val doubles = doubleArrayOf(1.5, 3.0) print(doubles.average()) // prints 2.25 val ints = intArrayOf(1, 4) println(ints.average()) // prints 2.5 component1(), component2(), ... component5() return an it...

This method works by incrementing an integer from 0 to the greatest index in the array. $colors = ['red', 'yellow', 'blue', 'green']; for ($i = 0; $i < count($colors); $i++) { echo 'I am the color ' . $colors[$i] . '<br>'; } This also allows iterating an array in reverse order wi...

A chrome extension is seperated into a maximum of 4 parts: the background page the popup page one or more content scripts the options page Each part, since they are innately separate, require individual debugging. Keep in mind that these pages are separate, meaning that variables are not d...

Before talking about porting Firefox extensions from/to, one should know what WebExtensions is. WebExtensions - is a platform that represents an API for creating Firefox extensions. It uses the same architecture of extension as Chromium, as a result, this API is compatible in many ways with API in...

Custom Renderer help to allows to add new properties and render them differently in native platform that can not be otherwise does through shared code. In this example we will add radius and shadow to a boxview. Firstly, we should create custom control in PCL project, which will declare some requir...

In this exemple, we want to execute code which is stored in a string format. # the string str <- "1+1" # A string is not an expression. is.expression(str) [1] FALSE eval(str) [1] "1+1" # parse convert string into expressions parsed.str <- parse(text="1+1...

Creating a chart that displays a static dataset is relatively simple. For example, if we have this array of objects as the data: var data = [ {title: "A", value: 53}, {title: "B", value: 12}, {title: "C", value: 91}, {title: "D", value: 24...

Debian/Ubuntu # apt-get update & apt-get -y upgrade # apt-get install cron Fedora/CentOS # yum -y update # yum install vixie-cron Arch # pacman --noconfirm -Syu # pacman -S cronie

Drawing text in canvas with your font from assets. Typeface typeface = Typeface.createFromAsset(getAssets(), "fonts/SomeFont.ttf"); Paint textPaint = new Paint(); textPaint.setTypeface(typeface); canvas.drawText("Your text here", x, y, textPaint);

Changing the edit text's appearance when it's selected, pressed and not selected can be customised easily by adding creating a new style for your edit text like so <style name="EditTextTheme" parent="Theme.AppCompat.Light.DarkActionBar"> <item name="colorContr...