Tutorial by Examples: n

A component can be registered either globally or locally (bind to another specific component). var Child = Vue.extend({ // ... }) var Parent = Vue.extend({ template: '...', components: { 'my-component': Child } }) Thiw new component () will only be available in...

You can extend and register a component in one step: Vue.component('custom-component', { template: '<div>A custom component!</div>' }) Also when the component is registered locally: var Parent = Vue.extend({ components: { 'custom-component': { templa...

Passing an object to the data property when registering a component would cause all instances of the component to point to the same data. To solve this, we need to return data from a function. var CustomComponent = Vue.extend({ data: function () { return { a: 1 } } })

One of the ways components can communicate with its ancestors/descendants is via custom communication events. All Vue instances are also emitters and implement a custom event interface that facilitates communication within a component tree. We can use the following: $on: Listen to events emitted ...

public class VolleyErrorHelper { /** * Returns appropriate message which is to be displayed to the user * against the specified error object. * * @param error * @param context * @return */ public static String ...

Classes without dependencies can easily be created by dagger. public class Engine { @Inject // <-- Annotate your constructor. public Engine() { } } This class can be provided by any component. It has no dependencies itself and is not scoped. There is no further code necessar...

In order to obtain a Google Maps API key for your certificate, you must provide the API console with the SH1-fingerprint of your debug/release keystore. You can obtain the keystore by using the JDK's keytool program as described here in the docs. Another approach is to obtain the fingerprint progr...

The following abstract defines an EmailAddress type based on the String type which will use a regular expression to validate the passed argument as an e-mail address. If the address isn't valid, an exception will be thrown. abstract EmailAddress(String) { static var ereg = ~/^[\w-\.]{2,}@[\w-\.]...

Windows : for %f in (C:\your_app_path\*.apk) do adb install "%f" Linux : for f in *.apk ; do adb install "$f" ; done

adb shell pm list permissions -g -d

It is perfectly fine to use a package name other than the folder name. If we do so, we still have to import the package based on the directory structure, but after the import we have to refer to it by the name we used in the package clause. For example, if you have a folder $GOPATH/src/mypck, and i...

This is the advanced approach with example class FundsController < ApplicationController def index @funds = Fund.all_funds(current_user) end def show @fund = Fund.find(params[:id]) respond_to do |format| format.html format.pdf do pdf = FundsPdf....

Sometimes gotoAndStop() is called in the middle of the code that refers some frame-based properties. But, right after the frame is changed all links to properties that existed on the current frame are invalidated, so any processing that involves them should be immediately terminated. There are two ...

A lambda can only have a trailing return type; the leading return type syntax is not applicable to lambdas. Note that in many cases it is not necessary to specify a return type for a lambda at all. struct Base {}; struct Derived1 : Base {}; struct Derived2 : Base {}; auto lambda = [](bool b) -&g...

Iterators utilize a form of the for loop known as the generic for loop. The generic form of the for loop uses three parameters: An iterator function that gets called when the next value is needed. It receives both the invariant state and control variable as parameters. Returning nil signals term...

The Lua standard library provides two iterator functions that can be used with a for loop to traverse key-value pairs within tables. To iterate over a sequence table we can use the library function ipairs. for index, value in ipairs {'a', 'b', 'c', 'd', 'e'} do print(index, value) --> 1 a, ...

The C programming language allows multidimensional arrays. Here is the general form of a multidimensional array declaration − type name[size1][size2]...[sizeN]; For example, the following declaration creates a three dimensional (5 x 10 x 4) integer array: int arr[5][10][4]; Two-dimensional A...

Multicasting is a type of Datagram Socket. Unlike regular Datagrams, Multicasting doesn't handle each client individually instead it sends it out to one IP Address and all subscribed clients will get the message. Example code for a server side: public class Server { private DatagramSo...

Step by Step Guide :- Step 1 :- Set constraint to UIView Leading. 2) Top. 3) Trailing. (From mainview) Step 2 :- Set constrain to Label 1 Leading 2) Top 3) Trailing (From it's superview) Step 3 :- Set constraint to Label 2 Leading 2) Top 3) Trailing (From its superview) Step...

Python 2.x2.7 In Python 2, if you want to define a class boolean value by yourself, you need to implement the __nonzero__ method on your class. The value is True by default. class MyClass: def __nonzero__(self): return False my_instance = MyClass() print bool(MyClass) # Tru...