Tutorial by Examples: demo

Simple Complete Threading Demo

class Program { static void Main(string[] args) { // Create 2 thread objects. We're using delegates because we need to pass // parameters to the threads. var thread1 = new Thread(new ThreadStart(() => PerformAction(1))); var thread2 = new Thread(...

C# Language • Threading

Simple Complete Threading Demo using Tasks

class Program { static void Main(string[] args) { // Run 2 Tasks. var task1 = Task.Run(() => PerformAction(1))); var task2 = Task.Run(() => PerformAction(2))); // Wait (i.e. block this thread) until both Tasks are complete. Task.WaitA...

C# Language • Threading

Autoreload on source code changes using nodemon

The nodemon package makes it possible to automatically reload your program when you modify any file in the source code. Installing nodemon globally npm install -g nodemon (or npm i -g nodemon) Installing nodemon locally In case you don't want to install it globally npm install --save-dev nodemo...

Node.js • Autoreload on changes

WCF Restful Service Demo

svc public class WCFRestfulService : IWCFRestfulService { public string GetServiceName(int Id) { return "This is a WCF Restful Service"; } } Interface [ServiceContract(Name = "WCRestfulService ")] public interface IWCFRestf...

wcf • Getting started with wcf

Named Arguments can make your code more clear

Consider this simple class: class SmsUtil { public bool SendMessage(string from, string to, string message, int retryCount, object attachment) { // Some code } } Before C# 3.0 it was: var result = SmsUtil.SendMessage("Mehran", "Maryam", "Hello...

C# Language • Named Arguments

Reading financial data (for multiple tickers) into pandas panel - demo

from datetime import datetime import pandas_datareader.data as wb stocklist = ['AAPL','GOOG','FB','AMZN','COP'] start = datetime(2016,6,8) end = datetime(2016,6,11) p = wb.DataReader(stocklist, 'yahoo',start,end) p - is a pandas panel, with which we can do funny things: let's see what...

pandas • Pandas Datareader

Demonstration of the Flash Scope usage

Bean1 @ManagedBean @ViewScoped public class Bean1 implements Serializable { /** * Just takes the given param, sets it into flash context and redirects to * page2 * * @param inputValue * @return */ public String goPage2(String inputValue) { ...

jsf • The Flash Scope in JSF 2

Very basic example demonstrating function use on SetTimer.

;Sends the keystroke for the letter "a" every 3 seconds. #Persistent SetTimer, SendLetterA, 3000 return SendLetterA() { Send, a }

AutoHotkey • Use functions instead of labels

UNICODE modifier

The UNICODE modifier, usually expressed as u (PHP, Python) or U (Java), makes the regex engine treat the pattern and the input string as Unicode strings and patterns, make the pattern shorthand classes like \w, \d, \s, etc. Unicode-aware. /\A\p{L}+\z/u is a PHP regex to match strings that consis...

Regular Expressions • Regex modifiers (flags)

Pie Chart with Demo

<!doctype html> <html> <head> <style> body{ background-color:white; } #canvas{border:1px solid red; } </style> <script> window.onload=(function(){ var canvas = document.getElementById("canvas"); var ctx = canvas.getContext(&...

html5-canvas • Charts & Diagrams

Demo of FCM based notifications

This example shows how to use the Firebase Cloud Messaging(FCM) platform. FCM is a successor of Google Cloud Messaging(GCM). It does not require C2D_MESSAGE permissions from the app users. Steps to integrate FCM are as follows. Create sample hello world project in Android Studio Your Android...

Android • Firebase

Promote or Demote Swarm Nodes

To promote a node or set of nodes, run docker node promote from a manager node: docker node promote node-3 node-2 Node node-3 promoted to a manager in the swarm. Node node-2 promoted to a manager in the swarm. To demote a node or set of nodes, run docker node demote from a manager node: doc...

Docker • Docker swarm mode

Fabric js canvas events Demo

<canvas id="c" width="400" height="400"></canvas> var canvas = new fabric.Canvas("c"); canvas.on('mouse:up', function () { console.log('Event mouse:up Triggered'); }); canvas.on('mouse:down', function () { console.log('Event mouse:d...

fabricjs • Fabricjs canvas events

Demo Example

Live Demo on jsbin

datepicker • Getting started with datepicker

Demonstrating GetObject and CreateObject

MSDN-GetObject Function Returns a reference to an object provided by an ActiveX component. Use the GetObject function when there is a current instance of the object or if you want to create the object with a file already loaded. If there is no current instance, and you don't want the object ...

VBA • CreateObject vs. GetObject

Catching application wide ModelNotFoundException

app\Exceptions\Handler.php public function render($request, Exception $exception) { if ($exception instanceof ModelNotFoundException) { abort(404); } return parent::render($request, $exception); } You can catch / handle any exception that is thrown in Laravel.

Laravel • Error Handling

Creating the "sports2000" demo database from the command line

This shows how to create the demo database used in big parts of Progress documentation: sports2000. This assumes you have installed the Progress products with at least one type of database license. Run proenv script/bat-file that will give you a prompt with all environment variables set. Create ...

progress-4gl • Getting started with progress-4gl

3.1 Function GetFldrNames() which is needed for several of the demonstration macros

A number of the demonstration macros within this part requires a function which I will explain later. For the moment, please just copy GetFldrNames() to a suitable module. I use this function frequently and keep it, and other like it that I use in many different macros, in a module named “ModGloba...

outlook-vba • Introduction Part 3: Stores and all their folders

Simple demonstration

A key part of the Reader monad is the ask (https://hackage.haskell.org/package/mtl-2.2.1/docs/Control-Monad-Reader.html#v:ask) function, which is defined for illustrative purposes: import Control.Monad.Trans.Reader hiding (ask) import Control.Monad.Trans ask :: Monad m => ReaderT r m r ask ...

Haskell Language • Reader / ReaderT

Demonstration of the problem and the solution

For example, imagine a screen with 3 sections, laid out like this: The blue box might be given a margin of 4,4,0,0. The green box might be given a margin of 4,4,4,0. The purple box margin would be 4,4,4,4. Here's the XAML: (I'm using a grid to achieve the layout; but this design principle applies...

wpf • "Half the Whitespace" Design principle