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The Ionic Platform offers a range of powerful, hybrid-focused mobile backend services and tools to make it easy to scale beautiful, performant hybrid apps, at a rapid pace. In order to use Ionic Platform you need to have the Ionic Framework installed. 1.) Registration (sign-up) You need to enter...

On of the overloads of the Select extension methods also passes the index of the current item in the collection being selected. These are a few uses of it. Get the "row number" of the items var rowNumbers = collection.OrderBy(item => item.Property1) .ThenBy...

Since Ionic 2 is getting better and better every day, please always check the official documentation to keep track of the latest changes and improvements. Prerequisites: You will need NodeJS in order to build Ionic 2 projects. You can download and install node here and learn more about npm and the...

Locally created images can be pushed to Docker Hub or any other docker repo host, known as a registry. Use docker login to sign in to an existing docker hub account. docker login Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https...

To get the IP address of a docker machine, you can do that with this command : docker-machine ip machine-name

Dim aList as New List(Of String) aList.Add("Hello, World") aList.Add("Test") Dim output As String = aList(0) output: Hello, World If you do not know the index of the item or only know part of the string then use the Find or FindAll method Dim aList as New List(Of S...

Let's say you have two commits d9e1db9 and 5651067 and want to see what happened between them. d9e1db9 is the oldest ancestor and 5651067 is the final descendant in the chain of commits. gitk --ancestry-path d9e1db9 5651067

You will need to set your base URL in application/config/config.php If it is not set, then CodeIgniter will try to guess the protocol and path to your installation, but due to the security concerns the hostname will be set to $_SERVER['SERVER_ADDR'] if available, or localhost otherwise. The auto...

Swift: if let url = URL(string: "mailto://[email protected]") { if UIApplication.shared.canOpenURL(url) { UIApplication.shared.openURL(url) } else { print("Cannot open URL") } } Objective-C: NSURL *url = [NSURL URLWithString:@"mailto://az...

let let num=1+2 let num="1+2" let 'num= 1 + 2' let num=1 num+=2 You need quotes if there are spaces or globbing characters. So those will get error: let num = 1 + 2 #wrong let 'num = 1 + 2' #right let a[1] = 1 + 1 #wrong let 'a[1] = 1 + 1' ...

Setup your test environment Download Espresso Set the instrumentation runner Example build.gradle file Analytics Add the first test Running tests This guide covers installing Espresso using the SDK Manager and building it using Gradle. Android Studio is recommended. Setup your test envir...

#!/bin/bash echo $(( 1 + 2 )) Output: 3 # Using variables #!/bin/bash var1=4 var2=5 ((output=$var1 * $var2)) printf "%d\n" "$output" Output: 20

#!/bin/bash expr 1 + 2 Output: 3

To set the word list that vim will use for spell checking set the spelllang option. For example :set spelllang=en # set to English, usually this is the default :set spelllang=en_us # set to U.S. English :set spelllang=en_uk # set to U.K. English spellings :set spelllang=es ...

Single file plugin Put the file under $HOME/.vim/plugin or $HOME/vimfiles/plugin This would source the plugin on startup of Vim. Now the user could use everything defined in it. If the plugin however needs activation, the user either has to execute the command themselves whenever they want to use...

You can override 4 methods of SKScene to detect user touch class GameScene: SKScene { override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { } override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) { ...

Configure your app's URLconf to automatically use a URL namespace by setting the app_name attribute: # In <myapp>/urls.py from django.conf.urls import url from .views import overview app_name = 'myapp' urlpatterns = [ url(r'^$', overview, name='overview'), ] This will set t...

Use $this to refer to the current object. Use self to refer to the current class. In other words, use $this->member for non-static members, use self::$member for static members. In the example below, sayHello() and sayGoodbye() are using self and $this difference can be observed here. cl...

You can create temporary files which has a visible name on the file system which can be accessed via the name property. The file can, on unix systems, be configured to delete on closure (set by delete param, default is True) or can be reopened later. The following will create and open a named temp...

A Scripting Dictionary object stores information in Key/Item pairs. The Keys must be unique and not an array but the associated Items can be repeated (their uniqueness is held by the companion Key) and can be of any type of variant or object. A dictionary can be thought of as a two field in-memory ...