Tutorial by Examples: e

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...

//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...

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...

//create a list to hold all the values List<string> excelData = new List<string>(); //read the Excel file as byte array byte[] bin = File.ReadAllBytes("C:\\ExcelDemo.xlsx"); //or if you use asp.net, get the relative path byte[] bin = File.ReadAllBytes(Server.MapPath(&q...

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...

//set the formatting options ExcelTextFormat format = new ExcelTextFormat(); format.Delimiter = ';'; format.Culture = new CultureInfo(Thread.CurrentThread.CurrentCulture.ToString()); format.Culture.DateTimeFormat.ShortDatePattern = "dd-mm-yyyy"; format.Encoding = new UTF8Encoding(); ...

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...

public String getCitiesByCountry(String countryName) throws MalformedURLException, IOException { //Code to make a webservice HTTP request String responseString = ""; String outputString = ""; String wsURL = "http://www.webservicex.com/globalweather.asm...

Define a new visitor class by overriding some of the methods of ExpressionVisitor: class PrintingVisitor : ExpressionVisitor { protected override Expression VisitConstant(ConstantExpression node) { Console.WriteLine("Constant: {0}", node); return base.VisitConstant(...

Go to https://www.mozilla.org/firefox/new/. 1.Click on Download button. 2.An executable file will be downloaded. 3.Double click on the .exe file and click run. 4.Finish the setup. 5.Select the option of "Maintain shortcut on the desktop".

For iterating more than two lists simultaneously within list comprehension, one may use zip() as: >>> list_1 = [1, 2, 3 , 4] >>> list_2 = ['a', 'b', 'c', 'd'] >>> list_3 = ['6', '7', '8', '9'] # Two lists >>> [(i, j) for i, j in zip(list_1, list_2)] [(1, '...