Tutorial by Examples: app

A commonly used utility library is Lodash. To install it into your Aurelia CLI driven application first you need to install it using Npm. npm install lodash --save Now in your preferred IDE/code editor open up the following file in your project directory: aurelia_project/aurelia.json and scroll do...

Given the 4 points of a cubic Bezier curve the following function returns its length. Method: The length of a cubic Bezier curve does not have a direct mathematical calculation. This "brute force" method finds a sampling of points along the curve and calculates the total distance spanne...

When writing wrappers for unmanaged resources, you should subclass SafeHandle rather than trying to implement IDisposable and a finalizer yourself. Your SafeHandle subclass should be as small and simple as possible to minimize the chance of a handle leak. This likely means that your SafeHandle imple...

Requirements: A developer account An apk already built and signed with a non-debug key A free app that doesn't have in-app billing no Firebase Cloud Messaging or Game Services Head to https://play.google.com/apps/publish/ 1a) Create your developer account if you do not have one Click b...

1-You need to connect your device to your computer via USB cable. Make sure USB debugging is working. You can check if it shows up when running adb devices(or tns device). 2-Run adb tcpip 5555 3-Disconnect your device (remove the USB cable). 4-Go to the Settings -> About phone -> Status...

It's a good practice to run NodeJS apps controlled by process managers. Process manager helps to keep application alive forever, restart on failure, reload without downtime and simplifies administrating. Most powerful of them (like PM2) have a built-in load balancer. PM2 also enables you to manage ...

We can create a better mapper classes with extension methods, Suppose if i have some DTO classes like public class UserDTO { public AddressDTO Address { get; set; } } public class AddressDTO { public string Name { get; set; } } and i need to map to corresponding v...

private final Logger logger = Logger.getLogger(getClass().getCanonicalName()); WebView webView = new WebView(); webEngine = webView.getEngine(); webEngine.setOnAlert(event -> logger.warning(() -> "JS alert: " + event.getData()));

When using a WebView to display your own custom webpage and this webpage contains Javascript, it might be necessary to establish a two-way communication between the Java program and the Javascript in the web page. This example shows how to setup such a communication. The webpage shall display an i...

With AspNetCore you can develop the application on any platform including Mac,Linux,Window and Docker. Installation and SetUp Install visual Studio Code from here Add C# extesnion Install dot net core sdk. You can install from here Now you have all the tools available. To develop the applic...

Create an empty directory somewhere ... mkdir HelloWorld cd HelloWorld Then use the built in scaffolding technology to create a Hello World sample dotnet new console -o This command creates two files: HelloWorld.csproj describes the project dependencies, settings, and Target Framework ...

The Java language allows you to use new to create instances Integer, Boolean and so on, but it is generally a bad idea. It is better to either use autoboxing (Java 5 and later) or the valueOf method. Integer i1 = new Integer(1); // BAD Integer i2 = 2; // BEST (autoboxing)...

Standalone Common Lisp binaries can be built with buildapp. Before we can use it to generate binaries, we need to install and build it. The easiest way I know how is using quicklisp and a Common Lisp (this example uses [sbcl], but it shouldn't make a difference which one you've got). $ sbcl Thi...

The simplest possible binary you could build Has no dependencies Takes no command line arguments Just writes "Hello world!" to stdout After you've built buildapp, you can just... $ buildapp --eval '(defun main (argv) (declare (ignore argv)) (write-line "Hello, world!"))'...

A more realistic example involves a project you're building with multiple files on disk (rather than an --eval option passed to buildapp), and some dependencies to pull in. Because arbitrary things can happen during the finding and loading of asdf systems (including loading other, potentially unrel...

Wrapper script is a script that wraps another script or command to provide extra functionalities or just to make something less tedious. For example, the actual egrep in new GNU/Linux system is being replaced by a wrapper script named egrep. This is how it looks: #!/bin/sh exec grep -E "$@&q...

Use same UIImage with multiple theme base app by just applying UIColor to UIImage instance as following. // *** Create an UIImage instance with RenderingMode AlwaysTemplate *** UIImage *imgMenu = [[UIImage imageNamed:@"iconMenu"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate]...

A very simple applet draws a rectangle and prints a string something on the screen. public class MyApplet extends JApplet{ private String str = "StackOverflow"; @Override public void init() { setBackground(Color.gray); } @Override public void de...

You can use the method getAppletContext() to get an AppletContext object that allows you to request the browser to open a link. For this you use the method showDocument(). Its second parameter tells the browser to use a new window _blank or the one that shows the applet _self. public class MyLinkAp...

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { MyModule } from './app.module'; platformBrowserDynamic().bootstrapModule( MyModule ); In this example, MyModule is the module containing your root component. By bootstrapping MyModule your Angul...