Tutorial by Examples: in

twitter-bootstrap-3 has provided four different sizes of buttons Large button btn-lg Default button does not require any btn size Small button btn-sm Extra small button btn-xs <button type="button" class="btn btn-lg">Large button</button> <button type=...

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...

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...

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 ...

Function pointers are the most basic way of passing functions around, which can also be used in C. (See the C documentation for more details). For the purpose of callable objects, a function pointer can be defined as: typedef returnType(*name)(arguments); // All using name =...

During design, the architect should look at what parts of the system need restricted access, and which parts can be less protected. For example, everyone can have read access to the public web page of the company, but only authorized individuals can edit the content. To help with the decisions to b...

When Vim opens a file with <CR><NL> line endings (common on MSDOS based operating systems, also called CRLF) it will set fileformat to dos, you can check what with: :set fileformat? fileformat=dos Or just :set ff? fileformat=dos To convert it to <NL> line endings (com...

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...

in the index.html, link the CSS from Google CDN <link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/angular_material/1.1.1/angular-material.min.css"> Required dependencies: angular angular-aria angular-animate angular-messages <!-- Angular M...

The importance of good naming, can be best illustrated by some bad examples: [Test] Test1() {...} //Cryptic name - absolutely no information [Test] TestFoo() {...} //Name of the function - and where can I find the expected behaviour? [Test] TestTFSid567843() {...} //Huh? You want me to lo...

Add post-formats to post_type 'page' add_post_type_support( 'page', 'post-formats' ); Next example registers custom post type 'my_custom_post_type', and add Post Formats. Register custom post type 'my_custom_post_type' add_action( 'init', 'create_my_post_type' ); function create_my_post_type(...

Sometimes you want to know the position (index) of the current element while iterating over an enumerator. For such purpose, Ruby provides the with_index method. It can be applied to all the enumerators. Basically, by adding with_index to an enumeration, you can enumerate that enumeration. Index is ...

Spring provides a useful task scheduling support. To enable it, just annotate any of your @Configuration classes with @EnableScheduling: @Configuration @EnableScheduling public class MyConfig { // Here it goes your configuration }

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...

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...

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...

A method called in one object will move up the chain of objects until one is found that can properly handle the call. This particular example uses scientific experiments with functions that can just get the title of the experiment, the experiments id or the tissue used in the experiment. abstract c...

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) ...

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...

When you have to use both PIL and Pygame because missing functionalities in both of them, you need a way to convert between Pygame Surfaces and PIL Images, preferably without writing them to the disk. For that you can use "tostring" and "fromstring" functions provided in both li...