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There are various ways to use colours in Processing since Processing is very flexible with colour formats. RGB and RGBA This is the standard RGB(A) notation and the default color mode. The first three colour values (red, green, blue) range from 0 to 255. For example, the below example is the colou...

import React, { Component } from 'react'; type Props = { posts: Array<Article>, dispatch: Function, children: ReactElement } class Posts extends Component { props: Props; render () { // rest of the code goes here } }

The reference to the outer class uses the class name and this public class OuterClass { public class InnerClass { public void method() { System.out.println("I can access my enclosing class: " + OuterClass.this); } } } You can access fields and ...

Elements of String are characters that can be accessed by the indexing operation string[index]. val str = "Hello, World!" println(str[1]) // Prints e String elements can be iterated with a for-loop. for (c in str) { println(c) }

Kotlin has two types of string literals: Escaped string Raw string Escaped string handles special characters by escaping them. Escaping is done with a backslash. The following escape sequences are supported: \t, \b, \n, \r, \', \", \\ and \$. To encode any other character, use the Unicod...

Both escaped strings and raw strings can contain template expressions. Template expression is a piece of code which is evaluated and its result is concatenated into string. It starts with a dollar sign $ and consists of either a variable name: val i = 10 val s = "i = $i" // evaluates to ...

In Kotlin strings are compared with == operator which chect for their structural equality. val str1 = "Hello, World!" val str2 = "Hello," + " World!" println(str1 == str2) // Prints true Referential equality is checked with === operator. val str1 = ""&q...

Download Play! 1. Goto http://www.playframework.com/download and download latest Play! release (play-2.5.X.zip at the time of this writing). Unzip in a directory of your choice. We’ll refer to uncompressed folder directory as PLAY_HOME. Add PLAY_HOME folder to you PATH environment variable, so that...

You can make your plugin customizable by accepting options. $.fn.colourize = function(options) { // This is one method to support default options var style = $.extend({ color: "green", backgroundColor: "white" }, options); // Set the col...

While writing jQuery plugins is simple, we want to enclose our plugins in a local scope. This will avoid namespace conflicts as well as polluting the global namespace, on top of ensuring that jQuery is loaded before our plugin extends it. // Encapsulate our plugins in a local scope (function($) { ...

//create a new ExcelPackage using (ExcelPackage excelPackage = new ExcelPackage()) { //create a WorkSheet ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets.Add("Sheet 1"); //fill cell data with a loop, note that row and column indexes start at 1 Random rnd...

The async package provides functions for asynchronous code. Using the auto function you can define asynchronous relations between two or more functions: var async = require('async'); async.auto({ get_data: function(callback) { console.log('in get_data'); // async code to ...

You can delete trailing spaces with the following command. :%s/\s\+$//e This command is explained as follows: enter Command mode with : do this to the entire file with % (default would be for the current line) substitute action s / start of the search pattern \s whitespace character \+ e...

You can delete all blank lines in a file with the following command: :g/^$/d This command is explained as follows: enter Command mode with : g is a global command that should occur on the entire file / start of the search pattern the search pattern of blank line is ^g /end of the search pat...

You can convert tabs to spaces by doing the following: First check that expandtab is switched off :set noexpandtab Then :retab! which replaces spaces of a certain length with tabs If you enable expandtab again :set expandtab then and run the :retab! command then all the tabs becomes spaces...

import WatchConnectivity var watchSession : WCSession? override func awake(withContext context: Any?) { super.awake(withContext: context) // Configure interface objects here. startWatchSession() } func startWatchSession(){ if(WCSession....

Boolean literals are the simplest of the literals in the Java programming language. The two possible boolean values are represented by the literals true and false. These are case-sensitive. For example: boolean flag = true; // using the 'true' literal flag = false; // using the 'fa...

func isValidEmail(email: String) -> Bool { let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}" let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx) return emailTest.evaluate(with: email) } or you could use String extensio...

Let's say that you have the following class: public class PersonInfo { public int ID { get; set; } [Display(Name = "First Name")] [Required(ErrorMessage = "Please enter your first name!")] public string FirstName{ get; set; } [Display(Name = "L...

In the file myConfig.groovy is the following content. message = 'Hello World!' aNumber=42 aBoolean=false aList=["apples", "grapes", "oranges"] Then in your main script you create a ConfigSlurper for your myConfig.groovy file which is really just another groovy sc...