Tutorial by Examples: basic

While redux itself is entirely synchronous, you can use a middleware such as redux-thunk to handle asynchronous actions. A "thunk" is another name for a callback. It is a function that is usually passed as an argument to be called at a later time. To use, apply the middleware to you...

Client.java import java.io.*; import java.net.*; public class Client{ public static void main(String [] args) throws IOException{ DatagramSocket clientSocket = new DatagramSocket(); InetAddress address = InetAddress.getByName(args[0]); String ex = "He...

\documentclass{article}% or book, report, ... \begin{document} See \cite{citeA} or \cite{citeB} or \cite{citeA, citeB}. \begin{thebibliography}{x} % \bibitem{<biblabel>} <citation> \bibitem{citeA} {\scshape Author, A}, {\itshape A title}, Journal of So-and-So, 2000....

An Interface's function known as a "contract" of functionality. It means that it declares properties and methods but it doesn't implement them. So unlike classes Interfaces: Can't be instantiated Can't have any functionality Can only contain methods * (Properties and Events are metho...

Input.acceleration is used to read the accelerometer sensor. It returns Vector3 as a result which contains x,y and z axis values in 3D space. void Update() { Vector3 acclerometerValue = rawAccelValue(); Debug.Log("X: " + acclerometerValue.x + " Y: " + acclerometerV...

map Overview A key sequence can be re-mapped to another key sequence using one of the map variants. As an example, the following typical map will exit Insert mode when you press jk in quick sequence: :inoremap jk <Esc> map Operator There are multiple variants of :map for different modes...

IQueryable<Cat> cats = session.Query<Cat>() .Where(c => c.Name == "Max");

A basic QueryOver query is performed against an ISession using the QueryOver<T> method, where T is the type of a mapped entity. IList<Customer> customers = session.QueryOver<Customer>() .Where(c => c.LastName == "Simpson") .List();

First, instantiate a Toast object with one of the MakeText() methods. This method takes three parameters: the application Context, the text message, and the duration for the toast. It returns a properly initialized Toast object. You can display the toast notification with Show(), as shown in the fol...

Many people don't make use of file.path when making path to a file. But if you are working across Windows, Mac and Linux machines it's usually good practice to use it for making paths instead of paste. FilePath <- file.path(AVariableWithFullProjectPath,"SomeSubfolder","SomeFileNam...

UIBezierPath using to create a circular path ShapeLayer CAShapeLayer *circleLayer = [CAShapeLayer layer]; [circleLayer setPath:[[UIBezierPath bezierPathWithOvalInRect: CGRectMake(50, 50, 100, 100)] CGPath]]; circleLayer.lineWidth = 2.0; [circleLayer setStrokeColor:[[UIColor redColor] CGColor]];...

The following example demonstrates a simple HTTP GET request. http.get() returns an Observable which has the method subscribe. This one appends the returned data to the posts array. var posts = [] getPosts(http: Http):void { this.http.get(`https://jsonplaceholder.typicode.com/posts`) ...

Analysis of Variance (aov) is used to determine if the means of two or more groups differ significantly from each other. Responses are assumed to be independent of each other, Normally distributed (within each group), and the within-group variances are assumed equal. In order to complete the analys...

The Jekyll gem makes a jekyll executable available to you in your Terminal window. You can use this command in a number of ways: $ jekyll build # => The current folder will be generated into ./_site $ jekyll build --destination <destination> # => The current folder will be generate...

The "listener" or "observer" pattern is the most common strategy for creating asynchronous callbacks in Android development. public class MyCustomObject { //1 - Define the interface public interface MyCustomObjectListener { public void onAction(String ac...

I like to wrap my OkHttp into a class called HttpClient for example, and in this class I have methods for each of the major HTTP verbs, post, get, put and delete, most commonly. (I usually include an interface, in order to keep for it to implement, in order to be able to easily change to a different...

If you need to add custom headers to your volley requests, you can't do this after initialisation, as the headers are saved in a private variable. Instead, you need to override the getHeaders() method of Request.class as such: new JsonObjectRequest(REQUEST_METHOD, REQUEST_URL, REQUEST_BODY, RESP_L...

The dot operator repeats the last action performed, for instance: file test.tx helo, World! helo, David! (cursor at [1][1]) Now perform a cwHello<Esc> (Change Word helo to Hello) Now the buffer looks like that: Hello, World! helo, David! (cursor at [1][5]) After typing j_ the cur...

<svg width="800px" height="600px"> <defs> <filter id="drop-shadow"> <feGaussianBlur in="SourceAlpha" stdDeviation="4"/> <feOffset dx="5" dy="5" result="offsetblur"/> <f...

<svg width="800px" height="600px"> <defs> <filter id="greyscale"> <feColorMatrix type="matrix" values="0.2126 0.7152 0.0722 0 0 0.2126 0.7152 0.0722 0 0 0...