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interface Foo { fun example() } class Bar { fun example() { println("Hello, world!") } } class Baz(b : Bar) : Foo by b Baz(Bar()).example() The example prints Hello, world!

val a = Array(3) { i -> i * 2 } // creates an Array<Int> of size 3 containing [0, 2, 4]

General-purpose stopwatch for timing how long a function takes to run: object Benchmark { fun realtime(body: () -> Unit): Duration { val start = Instant.now() try { body() } finally { val end = Instant.now() return Duration.b...

My laptop is having Windows 10. Here i am giving steps that you can follow to test and learn Ansible. SOME THEORY For Ansible you need a Control Machine and a host(or hosts) to run the Playbook. Control Machine should be Linux based or MacOS(windows not allowed) and need Python (2.6 or higher v...

Let's first recap how to initialize a 1D ruby array of integers: my_array = [1, 1, 2, 3, 5, 8, 13] Being a 2D array simply an array of arrays, you can initialize it like this: my_array = [ [1, 1, 2, 3, 5, 8, 13], [1, 4, 9, 16, 25, 36, 49, 64, 81], [2, 3, 5, 7, 11, 13, 17] ]

You can go a level further down and add a third layer of arrays. The rules don't change: my_array = [ [ [1, 1, 2, 3, 5, 8, 13], [1, 4, 9, 16, 25, 36, 49, 64, 81], [2, 3, 5, 7, 11, 13, 17] ], [ ['a', 'b', 'c', 'd', 'e'], ['z', 'y', 'x', 'w', 'v'] ], [ [] ...

Accessing the 3rd element of the first subarray: my_array[1][2]

#include <stdio.h> #include <pthread.h> void *thread_func(void *arg) { printf("I am thread #%d\n", *(int *)arg); return NULL; } int main(int argc, char *argv[]) { pthread_t t1, t2; int i = 1; int j = 2; /* Create 2 threads t1 and t2 wit...

The example below is taken from the full docs, available here (GitHub) or here (NPM). Installation npm install --save activedirectory Usage // Initialize var ActiveDirectory = require('activedirectory'); var config = { url: 'ldap://dc.domain.com', baseDN: 'dc=domain,dc=com' }; va...

Simply use PHP’s standard syslog function to write logs syslog(LOG_INFO, "Authorized access"); syslog(LOG_WARNING, "Unauthorized access"); You can see the logs from "Stackdriver Logging" ( https://console.cloud.google.com/logs )

The simplest way to use shelve is via the DbfilenameShelf class. It uses anydbm to store the data. You can use the class directly, or simply call shelve.open(): import shelve s = shelve.open('test_shelf.db') try: s['key1'] = { 'int': 10, 'float':9.5, 'string':'Sample data' } finally: ...

A simple OGL 4.0 GLSL shader program that shows the use of geometry shaders. The program is executed with a phyton script. To run the script, PyOpenGL and NumPy must be installed. In this example, the entire geometry (a cylinder) is generated in the geometry shader. Vertex shader geo.vert #vers...

The Xamarin Forms Entry control does not have a MaxLength property. To achieve this you can extend Entry as below, by adding a Bindable MaxLength property. Then you just need to subscribe to the TextChanged event on Entry and validate the length of the Text when this is called: class CustomEntry ...

With the help of react-navigation, you can add navigation to your app really easy. Install react-navigation npm install --save react-navigation Example: import { Button, View, Text, AppRegistry } from 'react-native'; import { StackNavigator } from 'react-navigation'; const App = StackNavigat...

When using cURL for some queries to the Docker API, it might be a bit tricky to pass some complex structures. Let's say, getting a list of images allows using filters as a query parameter, which have to be a JSON representation of map[string][]string (about the maps in Go you can find more here). H...

Install by using npm install --save react-native-router-flux In react-native-router-flux, each route is called a <Scene> <Scene key="home" component={LogIn} title="Home" initial /> key A unique string that can be used to refer to the particular scene. componen...

You can perform the same change instead of using Vue.$set by using the Array prototype's splice() new Vue({ el: '#app', data:{ myArr : ['apple', 'orange', 'banana', 'grapes'] }, methods:{ changeArrayItem: function(){ //this will not work ...

new Vue({ el: '#app', data:{ myArr : [ { name: 'object-1', nestedArr: ['apple', 'banana'] }, { name: 'object-2', nestedArr: ['grapes', 'orange'] } ] ...

To define your own menu, create an XML file inside your project's res/menu/ directory and build the menu with the following elements: <menu> : Defines a Menu, which holds all the menu items. <item> : Creates a MenuItem, which represents a single item in a menu. We can also create a n...

PROGRAM zprogram MESSAGE-ID sabapdemos. System-defined message may be stored in a message class. The MESSAGE-ID token defines the message class sabapdemos for the entire program. If this is not used, the message class must be specified on each MESSAGE call.