Tutorial by Examples: ar

Java's checked exception mechanism requires the programmer to declare that certain methods could throw specifed checked exceptions. This is done using the throws clause. For example: public class OddNumberException extends Exception { // a checked exception } public void checkEven(int number) ...

To match special characters Double Backslash should be used \. becomes \\. Characters you'll have to escape include (){}[]/\+*$>.|^? The below example get three kinds of opening brackets let specials = "(){}[]" let pattern = "(\\(|\\{|\\[)" do { let regEx = try N...

Player player; //The player you want to award your achievement with Achievement achievement; //The achievement you want to award your player player.awardAchievement(achievement); //Awarding the achievement Checking if player has achievement: Player player; Achievement achievement...

Prerequisites: Install Firefox Install Selenium IDE addon (https://addons.mozilla.org/fr/firefox/addon/selenium-ide/) Open the plugin. A button displaying a red circle must be shown. If it's pressed, it means you can start your scenario. The plugin is recording everything you do within this F...

JSON arrays represent a collection of objects. In JS, theres a bunch of collection functions off of them such as slice, pop, push. Objects have just more raw data. A JSONArray is an ordered sequence of values. Its external text form is a string wrapped in square brackets with commas separating the ...

This example shows how to populate report with data returned by a data view delegate. During the exercise, we will develop an inquiry screen showing list of Sales Orders between two dates. Data view delegate will be used to populate Sales Order information. Prerequisites: We start with declara...

You can also make a switch statement switch based on the class of the thing you're switching on. An example where this is useful is in prepareForSegue. I used to switch based on the segue identifier, but that's fragile. if you change your storyboard later and rename the segue identifier, it breaks ...

Parsing files into STL containers istream_iterators are very useful for reading sequences of numbers or other parsable data into STL containers without explicit loops in the code. Using explicit container size: std::vector<int> v(100); std::copy(std::istream_iterator<int>(ifs), std::...

""" usage: sub <command> commands: status - show status list - print list """ import sys def check(): print("status") return 0 if sys.argv[1:] == ['status']: sys.exit(check()) elif sys.argv[1:] == ['list']: ...

import argparse import sys def check(): print("status") return 0 parser = argparse.ArgumentParser(prog="sub", add_help=False) subparser = parser.add_subparsers(dest="cmd") subparser.add_parser('status', help='show status') subparser.add_parser('lis...

Using PowerShell executed from a SharePoint Web Server: $wacoll = get-spwebapplication foreach($wa in $wacoll){ if($wa.IsAdministrationWebApplication -eq $false){ foreach($site in $wa.Sites){ foreach($web in $site.AllWebs){ # your code here ...

When using PowerShell, you can use setx.exe to set environment variables permanently. Start PowerShell Type one of the following: setx ASPNETCORE_ENVIRONMENT "development" setx ASPNETCORE_ENVIRONMENT "staging" Restart PowerShell

Extended version of http://www.riptutorial.com/python/example/25282/argparse--default-help-formatter- that fixed help output. import argparse import sys class CustomHelpFormatter(argparse.HelpFormatter): def _format_action(self, action): if type(action) == argparse._SubParsersActi...

There are important changes in how we use and declare default props and their types. React.createClass In this version, the propTypes property is an Object in which we can declare the type for each prop. The getDefaultProps property is a function that returns an Object to create the initial props....

Custom binding definition function regExReplace(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) { var observable = valueAccessor(); var textToReplace = allBindingsAccessor().textToReplace || ''; var pattern = allBindingsAccessor().pattern || ''; var flags = all...

This approach will generate one table on the database to represent all the inheritance structure. Example: public abstract class Person { public int Id { get; set; } public string Name { get; set; } public DateTime BirthDate { get; set; } } public class Employee : Person { ...

here countInstance is a static class variable class StaticTest{ static countInstance : number= 0; constructor(){ StaticTest.countInstance++; } } new StaticTest(); new StaticTest(); console.log(StaticTest.countInstance);

go to codeigniter/application/libraries/ create or replace your library files here. go to codeigniter/application/core/ create a new php file named like MY_Controller.php inside MY_Controller.php <?php class MY_Controller extends CI_Controller{ public function __construct(){ pa...

SQlite example Step by step Explanation The steps below demonstrate how to include this component in a Xamarin.Forms Shared Project: to add packages in (pcl,Andriod,Windows,Ios) Add References Click on Manage Nuget packages ->click on Browse to install SQLite.Net.Core-PCL , SQLite Net Ext...

Best way to connect amazon redshift using JDBC , Use proper driver as per version http://docs.aws.amazon.com/redshift/latest/mgmt/configure-jdbc-connection.html Step-1: npm install jdbc Step-2: var JDBC = require('jdbc'); var jinst = require('jdbc/lib/jinst'); // isJvmCreated will be true afte...