Tutorial by Examples: g

You can also pass arguments with a message to work with. We will use the classed from our previous example and extend them. In the receiving part, right behind the Subscribe method call add the type of the argument you are expecting. Also make sure you also declare the arguments in the handler sign...

When you no longer need to receive messages, you can simply unsubscribe. You can do it like this: MessagingCenter.Unsubscribe<MainPage> (this, "Hi"); When you are supplying arguments, you have to unsubscribe from the complete signature, like this: MessagingCenter.Unsubscribe<Ma...

As Artery is quite complex, it is recommended to start by understanding OMNeT++. A good point to start is the TicToc tutorial. It can be found at https://omnetpp.org/doc/omnetpp/tictoc-tutorial/. This tutorial provides an overview on the basic functionality of OMNeT++. This includes, among others, t...

To start with creating your own service, take a look at the base class of each service, which is called ItsG5Service. Also you can look at the CamService and the DenmService as they are already implemented services. All application related files and classes can be found in the artery/application sub...

Configuration In the following paragraphs there wil be an example per browser for the configuration in Json and setup in C#. This example expects you to have all the drivers in your path variable and browsers installed. Microsoft Edge C# code to create a remote webdriver // Defining webdriver v...

Configuration In the following paragraphs there wil be an example per browser for the configuration in Json and setup in C#. This example expects you to have all the browsers installed and the drivers in your path variable Microsoft Edge C# code to create a remote webdriver // Defining webdrive...

MultiDex is a library in the Android APK that allows the app to have more than 65,536 methods. The Android APKs have Dalvik Executable files (.dex) that contain the generated bytecodes compiled from your Java code. Each .dex file can contain up to 65,536 methods (2^16). Android OS versions before ...

golang/dep is a prototype dependency management tool. Soon to be an official versioning tool. Current status Alpha. Usage Get the tool via $ go get -u github.com/golang/dep/... Typical usage on a new repo might be $ dep init $ dep ensure -update To update a dependency to a new version, yo...

A generic new() constructor that takes the string name of the desired algorithm as its first parameter also exists to allow access to the above listed hashes as well as any other algorithms that your OpenSSL library may offer. The named constructors are much faster than new() and should be preferred...

Pipes supports simple binary communication between a client and a server In this example: a client connects and sends a FirstMessage the server receives and answers DoSomething 0 the client receives and answers DoNothing step 2 and 3 are repeated indefinitely The command data type exchange...

During coding, unexpected errors do arise frequently enough, which requires debugging and testing. But sometimes the errors are indeed expected and to bypass it, there is the Try..Catch..Throw..Finally..End Try block. To manage an error correctly, the code is put into a Try..Catch block, whereby th...

Storyboard: Initial viewController: an empty viewController with a button to present the GameViewController GameViewController: the typical GameViewController of the "Hello World" Sprite-kit template. Goal: I want to present the first viewController from my SKScene game with the corre...

Here is an example of a test using Pax Exam. package com.example.project.test; import static org.junit.Assert.*; import static org.ops4j.pax.exam.CoreOptions.*; import javax.inject.Inject; import org.junit.Test; import org.junit.runner.RunWith; import org.ops4j.pax.exam.Configuration;...

You can configure your Linux (or macOS) system in order to tie in an identifier <hostname> to some other system's IP address in your network. You can configure it: Systemwide. You should modify the /etc/hosts file. You just have to add to that file a new line containing: the remote sys...

This example will show how get started with Inverion of Control using Autofac with a relatively simple project, closely following the official getting started docs. Create a console application from File -> New -> Project -> Console Application Install Autofac for this project. Yo...

ProGuard is a tool used in the building process to optimize and obfuscate the Java code of your APK, and also remove unused classes. The resulting APK when using ProGuard will have a smaller size and will be harder to reverse-engineer (decompilation). ProGuard can be used too in Xamarin.Android app...

You made a great app and tested it in Debug, with good results. Everything was working fine! But then, you decided to prepare your app for release. You set up MultiDex, ProGuard and Linker, and then, it stopped working. This tutorial aims to help you to find out common problems related to ProGuard...

Suppose you want to see if a certain set of sales prices makes sense for a store. The items originally cost $5, so you don't want to accept the sale if the sales price is less for any of them, but you do want to know what the new price is otherwise. Calculating one price is easy: you calculate the...

To open a link call openURL. Linking.openURL(url) .catch(err => console.error('An error occurred ', err)) The preferred method is to check if any installed app can handle a given URL beforehand. Linking.canOpenURL(url) .then(supported => { if (!supported) { console.log('Unsuppor...

You can detect when your app is launched from an external URL. componentDidMount() { const url = Linking.getInitialURL() .then((url) => { if (url) { console.log('Initial url is: ' + url) } }).catch(err => console.error('An error occurred ', err)) } To enable this...