Tutorial by Examples: com

The RxLifecycle library makes it easier binding observable subscriptions to Android activities and fragment lifecycle. Keep in mind that forgetting to unsubscribe an Observable can cause memory leaks and keeping your activity / fragment alive event after it has been destroyed by the system. Add th...

The standard library comes with a rich collection of lazy iterables (and libraries such as Iterators.jl provide even more). Lazy iterables can be composed to create more powerful iterables in constant time. The most important lazy iterables are take and drop, from which many other functions can be c...

One of the most important implementations of Dynamic Programming is finding out the Longest Common Subsequence. Let's define some of the basic terminologies first. Subsequence: A subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the orde...

You can do neat things via the results of Array "comprehensions"... Like assign multiple variables... from the result of a looping for statement... [express,_] = (require x for x in ['express','underscore']) Or a syntactically sweet version of a "mapped" function call, etc.....

For this example, we want to make sure that any Employee who is marked as a Project Resource also has an appropriate Labor Cost defined. // 1.0, Revealing Module pattern var myNamespace = myNamespace || {}; myNamespace.example = (function () { /** * User Event 1.0 example detailing...

using System; [assembly:CLSCompliant(true)] namespace CLSDoc { [CLSCompliant(false)] public class Animal { public int age = 0; } //Warning CS3009 'Dog': base type 'Animal' is not CLS-compliant public class Dog : Animal { } }

;;Find the nth Fibonacci number for any n > 0. ;; Precondition: n > 0, n is an integer. Behavior undefined otherwise. (defun fibonacci (n) (cond ( ;; Base case. ;; The first two Fibonacci numbers (indices 1 and 2) are 1 by defin...

In some scenarios, we might want to narrow down the results being shown by PlaceAutocomplete to a specific country or maybe to show only Regions. This can be achieved by setting an AutocompleteFilter on the intent. For example, if I want to look only for places of type REGION and only belonging to I...

<link rel="import" href="../bower_components/iron-icon/iron-icon.html"> <link rel="import" href="../bower_components/iron-icons/iron-icons.html"> <link rel="import" href="../bower_components/iron-icons/social-icons.html"&gt...

Presumably the simplest way to use compose is with a View only. This allows you to include HTML templates without the need to declare a ViewModel with bindable properties for each of them, making it easier to reuse smaller pieces of HTML. The BindingContext (ViewModel) of the View will be set to th...

Using compose with a View, ViewModel and Model is an easy way to reuse and combine different Views and ViewModels. Given the following View and ViewModel (applies to each alternative below): src/greeter.html <template> <h1>Hello, ${name}!</h1> </template> src/gree...

One easy algorithm to implement as a recursive function is factorial. ;;Compute the factorial for any n >= 0. Precondition: n >= 0, n is an integer. (defun factorial (n) (cond ((= n 0) 1) ;; Special case, 0! = 1 ((= n 1) 1) ;; Base case, 1! = 1 (t ...

DBCC commands enable user to maintain space in database, clean caches, shrink databases and tables. Examples are: DBCC DROPCLEANBUFFERS Removes all clean buffers from the buffer pool, and columnstore objects from the columnstore object pool. DBCC FREEPROCCACHE -- or DBCC FREEPROCCACHE (0x06...

Trace flags in SQL Server are used to modify behavior of SQL server, turn on/off some features. DBCC commands can control trace flags: The following example switches on trace flag 3205 globally and 3206 for the current session: DBCC TRACEON (3205, -1); DBCC TRACEON (3206); The following examp...

Data sets often contain comments that explain the data format or contain the license and usage terms. You usually want to ignore these lines when you read in the DataFrame. The readtable function assumes that comment lines begin with the '#' character. However, your file may use comment marks like ...

List all the node versions installed nvm ls v4.5.0 v6.7.0 Run command using any node installed version nvm run 4.5.0 --version or nvm exec 4.5.0 node --version Running node v4.5.0 (npm v2.15.9) v4.5.0 nvm run 6.7.0 --version or nvm exec 6.7.0 node --version Running node v6.7.0...

Objective-C First add the Social Framework to the XCode project. Import the #import "Social/Social.h" class to the required ViewController Twitter with text, image and link //- - To Share text on twitter - - if([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]) ...

Installation via NodeJS is the recommended method. It is preferred because you can use it to build the files selecting just the components you want. Step 1: Install Node (Link) Step 2: Install Gulp globally ( -g ) on your computer npm install -g gulp Semantic UI uses Gulp to provide command ...

import { Component } from '@angular/core'; @Component({ selector: 'myapp-about', template: `<my-webcomponent></my-webcomponent>` }) export class AboutComponent { }

The Redis PHP module gives access to the same commands as the Redis CLI client so it is quite straightforward to use. The syntax is as follow: // Creates two new keys: $redis->set('mykey-1', 123); $redis->set('mykey-2', 'abcd'); // Gets one key (prints '123') var_dump($redis->get('m...