Tutorial by Examples: d

You can use Scan or TryScan methods to look for specific messages in the queue and process them regardless of how many messages are before them. Both methods look at the messages in the queue in the order they arrived and will look for a specified message (up until optional timeout). In case there i...

#!/bin/bash deploy=false uglify=false while (( $# > 1 )); do case $1 in --deploy) deploy="$2";; --uglify) uglify="$2";; *) break; esac; shift 2 done $deploy && echo "will deploy... deploy = $deploy" $uglify && echo "will...

Starting from a sequence of static images (for example called frame01.jpg, frame02.jpg and so on) an animated gif can be created using the following command: magick -delay 10 -loop 0 frame*.jpg animation.gif -delay 10 sets the interval between the frames to 0.1 seconds -loop 0 creates a...

""" CannyTrackbar function allows for a better understanding of the mechanisms behind Canny Edge detection algorithm and rapid prototyping. The example includes basic use case. 2 of the trackbars allow for tuning of the Canny function and the other 2 help with understanding h...

In general, MIDI protocol is broken down into "messages". There are 4 general classes of messages: Channel Voice Channel Mode System Common System Real-Time Messages Messages start with a byte value above 0x80. Any value below 0x7F is considered data. Effectively meaning that 1...

Install Firebase resource in the the AppScript To do that click on Resources and then on Libraries. Firebase has a unique project library key that need to be installed in the AppScript. Click on Libraries The following pop-up appears. Enter the following project key in the textbox. MYeP8ZEE...

1. To write a simple data to test whether connection is working or not. function myFunction(){ var firebaseUrl = "https://example-app.firebaseio.com/"; var secret = "secret-key"; var base = FirebaseApp.getDatabaseByUrl(firebaseUrl, secret); base.setData("test&quo...

Team Foundation Server (TFS) can be installed in two basic infrastructure ways, Single Server Deployment and Multi-Server Deployment. The difference between these two deployments is where the Application Tier (TFS) and the Data Tier (MS SQL) reside. It is considered best practice to install TFS in...

Master process spawns server and client applications with a single process for each application. Server opens a port and client connects to that port. Then client sends data to server with MPI_Send to verify that the connection is established. master.c #include "mpi.h" int main(int ar...

First step of creating a plugin is creating the folder and file which the plugin will load from. Plugins are located in /wp-content/plugins/. The WordPress standard is to create a folder and filename that mirror each other like so: /wp-content/plugins/myplugin/ /wp-content/plugins/myplugin/myplu...

public class ConversationManager { #region ClassMemeber private XmppClientConnection _xmppClientConnection = null; public ConversationManager(XmppClientConnection con) { _xmppClientConnection = con...

QTP uses VBScript as its programming language. Therefore a Hello World example can be given in pure VBScript: MsgBox "Hello World!" Executing this script (by pressing F5 or clicking the Play button on the taskbar) will produce a message box with the text "Hello World!" in it...

Creates a graph topology in a distributed manner so that each node defines its neighbors. Each node communicates its rank among neighbors with MPI_Neighbor_allgather. #include <mpi.h> #include <stdio.h> #define nnode 4 int main() { MPI_Init(NULL, NULL); int rank; ...

import org.scalajs.dom import dom.document def appendP(target: dom.Node, text: String) = { val pNode = document.createElement("p") val textNode = document.createTextNode(text) pNode.appendChild(textNode) target.appendChild(pNode) }

Test Automation is broad topic. DEV/QA should delve on this questions first: What is nature of product? (Web, Mobile, Cloud, IOT, Analytics) What is development stage? (Developed-Legacy, In Development) What is technology stack? (Java, C#, Python, Ruby, Node, React) Is it SOA/Micro-services ba...

Test automation framework can have several components depending on automation planned. Some of them(though not limited to) are: Test Runner (TestNG, JUnit, Jest, Protractor, Cucumber) Test Container (BDD Specs-Steps, Junit Tests, Spec based functions) Test Environment Configuration Test Data S...

To extend and expand upon the binding experience we have converters to convert one a value of one type into another value of another type. To leverage Converters in a Databinding you first need to create a DataConverter class tht extens either IValueConverter(WPF & UWP) or IMultiVal...

Working Example: https://jsfiddle.net/Twisty/4f5yh3pa/7/ Cancelling and Reverting a sortable is not strongly documented. The helps show how moving an item from one list to another connected list can be conditionally cancelled. by default, this is not animated by sortable, this example includes an a...

Partial Update: Used when a partial document update is needed to be done, i.e. in the following example the field name of the document with id doc_id is going to be updated to 'John'. Note that if the field is missing, it will just be added to the document. doc = { "doc": { ...

Example of usage scalacheck with scalatest. Below we have four tests: "show pass example" - it passes "show simple example without custom error message " - just failed message without details, && boolean operator is used "show example with error messages on arg...