Tutorial by Examples: an

Folder Maker: A Web Script that handles POST

The Hello World Web Script handles GET HTTP methods. But what if you want to create data on the server? For that your web script should handle POST. Here is a simple example that creates new folders in Company Home. It is invoked by making a POST call with a JSON body that looks like: {'name':'tes...

alfresco • Web Scripts

Passing an event

This example describes passing an event using the Otto Event Bus. To use the Otto Event Bus in Android Studio you have to insert the following statement in your modules gradle file: dependencies { compile 'com.squareup:otto:1.3.8' } The event we'd like to pass is a simple Java object: pu...

Android • Otto Event Bus

Receiving an event

To receive an event it is necessary to implement a method with the event type as parameter and annotate it using @Subscribe. Furthermore you have to register/unregister the instance of your object at the BusProvider (see example Sending an event): public class MyFragment extends Fragment { pri...

Android • Otto Event Bus

Layout Inheritance

A layout is a view file, which is extended by other views which inject blocks of code into their parent. For example: parent.blade.php: <html> <head> <style type='text/css'> @yield('styling') </style> </head> <body> ...

Laravel • Blade Templates

Delete All Orphan Nodes

Orphan nodes/vertices are those lacking all relationships/edges. MATCH (n) WHERE NOT (n)--() DELETE n

neo4j • Cypher

Overriding properties and methods

Overriding properties (both read-only and mutable): abstract class Car { abstract val name: String; open var speed: Int = 0; } class BrokenCar(override val name: String) : Car() { override var speed: Int get() = 0 set(value) { throw UnsupportedOpera...

Kotlin • Class Inheritance

Find out worker and manager join token

When automating the provisioning of new nodes to a swarm, you need to know what the right join token is for the swarm as well as the advertised address of the manager. You can find this out by running the following commands on any of the existing manager nodes: # grab the ipaddress:port of the mana...

Docker • Docker swarm mode

Creating a boolean array

A boolean array can be created manually by using dtype=bool when creating the array. Values other than 0, None, False or empty strings are considered True. import numpy as np bool_arr = np.array([1, 0.5, 0, None, 'a', '', True, False], dtype=bool) print(bool_arr) # output: [ True True False ...

numpy • Boolean Indexing

Understanding stand-alone media files

The sample content used here is Tears of Steel, by Blender Foundation. Specifically, we will use the download titled "HD 720p (~365MB, mov, 2.0)". This is a single file that ends with the extension "mov" and will play in just about any modern media player. Note that the download...

video • Getting started with video

Add Firebase to Your Android Project

Here the steps required to create a Firebase project and to connect with an Android app. Add Firebase to your app Create a Firebase project in the Firebase console and click Create New Project. Click Add Firebase to your Android app and follow the setup steps. When prompted, enter yo...

firebase • Getting started with firebase

Important commands

!process - list user mode processes .process - set process context !peb - show process environment block !teb - show thread environment block !locks - deadlock analysis .dump - save a crash dump file to disk

WinDbg • Kernel debugging

Example of PHPUNIT with APItest using Stub And Mock

Class for which you will create unit test case. class Authorization { /* Observer so that mock object can work. */ public function attach(Curl $observer) { $this->observers = $observer; } /* Method for which we will create test */ public function postAuthorization($url, $met...

phpunit • Getting started with phpunit

Using transition events

UI-Router exposes transition events that can be helpful for handling transition errors, handling/blocking transitions based on certain parameter values, custom authentication etc.. These events can be bound to $rootScope for a global effect or to $scope for a per controller effect. $stateChangeE...

angular-ui-router • Getting started with angular-ui-router

Formsets with Initialized and unitialized data

Formset is a way to render multiple forms in one page, like a grid of data. Ex: This ChoiceForm might be associated with some question of sort. like, Kids are most Intelligent between which age?. appname/forms.py from django import forms class ChoiceForm(forms.Form): choice = forms.CharFie...

Django • Formsets

Passing Data From One Form To Another

Sometimes you might want to pass information that has been generated in one form, to another form for additional use. This is useful for forms that display a search tool, or a settings page among many other uses. Let's say you want to pass a DataTable between a form that is already open (MainForm) ...

Visual Basic .NET Language • Working with Windows Forms

Handling http method, accessing query strings & request body

Here are a simple example of some common tasks related to developing an API, differentiating between the HTTP Method of the request, accessing query string values and accessing the request body. Resources http.Handler interface http.ResponseWriter http.Request Available Method and Status cons...

Go • HTTP Server

Add transition or Cross-fade between two images.

Step 1: Create a transition drawable in XML Save this file transition.xml in res/drawable folder of your project. <transition xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/image1"/> <item android:drawable=...

Android • TransitionDrawable

Inject prototype-scoped beans into singletons

The container creates a singleton bean and injects collaborators into it only once. This is not the desired behavior when a singleton bean has a prototype-scoped collaborator, since the prototype-scoped bean should be injected every time it is being accessed via accessor. There are several solution...

spring • Creating and using beans

ClojureScript dev and production build

Add a :cljsbuild node like the following to your project.clj file. :cljsbuild { :builds { ;;Different target goals should have different names. ;;We have the dev build here :dev { ;;The ClojureScript c...

clojurescript • lein-cljsbuild

Simple Screen Manager Usage

# A line used mostly as the first one, imports App class # that is used to get a window and launch the application from kivy.app import App # Casual Kivy widgets that reside in kivy.uix from kivy.uix.label import Label from kivy.uix.button import Button from kivy.uix.boxlayout import BoxLayo...

kivy • Using the Screen Manager