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Before understand require to follow some setup for project integrate with firebase. Create your project in Firebase Console and download google-service.json file from console and put it in app level module of your project, Follow link for Create Project in console After this we require to...

Assume the following enum: enum Operation { Multiply(left : Int, right : Int); } Enum matching can be performed as follows: var result = switch(Multiply(1, 3)) { case Multiply(_, 0): 0; case Multiply(0, _): 0; case Multiply(l, r): l * r; } Ref...

Assume the following structure: var dog = { name : "Woofer", age : 7 }; Enum matching can be performed as follows: var message = switch(dog) { case { name : "Woofer" }: "I know you, Woofer!"; case _: "I don't know you, so...

var result = switch([1, 6]) { case [2, _]: "0"; case [_, 6]: "1"; case []: "2"; case [_, _, _]: "3"; case _: "4"; } References "Array matching", Haxe manual

This relies on the official consul docker image to run consul in clustered mode in a docker swarm with new swarm mode in Docker 1.12. This example is based on http://qnib.org/2016/08/11/consul-service/. Briefly the idea is to use two docker swarm services that talk to each other. This solves the pro...

(Tested with ANTLR 4.5.3, Eclipse Neon, ANTLR 4 IDE 0.3.5, and Java 1.8) Download the latest ANTLR. Make sure to get the complete ANTLR Java binaries jar. Save to any appropriate location, for example the folder where other Java libraries are stored. It doesn’t matter where, just remember the loc...

Dependency resolver is used to avoid tightly-coupled classes, improve flexibility and make testing easy. You can create your own dependency injector (not recomended) or use one of well-written and tested dependency injectors. In this example I am going to use Ninject. Step one: Create dependency re...

The most basic case to lift a particular window above the others, just call the .lift() method on that window (either Toplevel or Tk) import tkinter as tk #import Tkinter as tk #change to commented for python2 root = tk.Tk() for i in range(4): #make a window with a label window = tk...

WordPress is applying pre_get_posts filter to literally any loop it generates. It means that all changes we are making in our callback function are applied to all exiting loops. Obviously it is not what we want in most scenarios. In most cases we would like to target only main loop, and only for n...

Analog to np.loadtxt, np.savetxt can be used to save data in an ASCII file import numpy as np x = np.random.random([100,100]) np.savetxt("filename.txt", x) To control formatting: np.savetxt("filename.txt", x, delimiter=", " , newline="\n", comment...

' Just setting up the example Public Class A Public Property ID as integer Public Property Name as string Public Property OtherValue as Object End Class Public Sub Example() 'Setup the list of items Dim originalList As New List(Of A) originalList.Add(New A() With {...

:!mkdir -p %:h to create the missing directories, then :w

Setup After setting up a simple project to use webpack, babel and react issuing $npm i -g webpack-dev-server will install the development http server for quicker development. Modifying webpack.config.js var path = require('path'); module.exports = { entry: './src/index.js', output: { ...

This creates a window in fullscreen with size 500x500 pixels: pygame.init() screen = pygame.display.set_mode((500, 500), pygame.FULLSCREEN) screen represents from now on the window on screen; it is a pygame.Surface object. Anything that should be come visible to the user has to be drawn onto it...

System Requirements: Node JS Getting Started First Go to Firebase Console and Create New Project. After Creating the project, in project click on settings icon besides project Name in left sidebar and select Permissions. On Permissions Page Click on Service accounts in left sidebar then c...

A cycle in a directed graph exists if there's a back edge discovered during a DFS. A back edge is an edge from a node to itself or one of the ancestors in a DFS tree. For a disconnected graph, we get a DFS forest, so you have to iterate through all vertices in the graph to find disjoint DFS trees. ...

The HyperLink control is like the HTML element. Basic syntax for a hyperlink control: <asp:HyperLink ID="HyperLink1" runat="server"> HyperLink </asp:HyperLink> It has the following important properties: PropertiesDescriptionImageUrlPath of the image to be ...

Ionic inputs are no different from normal HTML inputs but they are styled differently and used as a directive. You can also use normal HTML inputs in Ionic apps. Here are some basic examples that Ionic offers ready-to-go. Checkbox: <ion-checkbox ng-model="checkbox">Label</ion-ch...

Ionic has it's own extension for displaying a modal window. Modals can be created by inserting the template straight to the view with a <script> tag or by using a separate template file. In this example we are assuming you have a html file named modal-template.html in a folder called templates...

The minimal setup for an HTTPS server in Node.js would be something like this : const https = require('https'); const fs = require('fs'); const httpsOptions = { key: fs.readFileSync('path/to/server-key.pem'), cert: fs.readFileSync('path/to/server-crt.pem') }; const app = function ...