Tutorial by Examples: in

MediaTypeFormatter is an abstract class from which JsonMediaTypeFormatter and XmlMediaTypeFormatter classes inherit from. Here, JsonMediaTypeFormatter class handles JSON objects and XmlMediaTypeFormatter class handles XML objects. Return only JSON irrespective of the Accept Header value: To return...

CREATE OR REPLACE TRIGGER CORE_MANUAL_BIUR BEFORE INSERT OR UPDATE ON CORE_MANUAL FOR EACH ROW BEGIN if inserting then -- only set the current date if it is not specified if :new.created is null then :new.created := sysdate; end if; end if; -- always s...

Let's create very simple video player using QtMultimedia module of Qt 5. In .pro file of your application you will need the following lines: QT += multimedia multimediawidgets Note that multimediawidgets is necessary for usage of QVideoWidget. #include <QtMultimedia/QMediaPlayer> #inclu...

ReactiveCocoa supports macOS 10.9+, iOS 8.0+, watchOS 2.0+, and tvOS 9.0+. Carthage If you use Carthage to manage your dependencies, simply add ReactiveCocoa to your Cartfile: github "ReactiveCocoa/ReactiveCocoa" ~> 5.0 If you use Carthage to build your dependencies, make sure you...

public async Task SetProductInactiveAsync(int productId) { using (IDbConnection con = new SqlConnection("myConnectionString")) { await con.ExecuteAsync("SetProductInactive", new { id = productId }, commandType: CommandType.StoredProcedure); ...

This will be a relatively comprehensive tutorial of how to write a command line tool to print the weather from the zip code provided to the command line tool. The first step is to write the program in ruby to do this action. Let's start by writing a method weather(zip_code) (This method requires the...

Some functions in R produce a side effect (i.e. saving, printing, plotting, etc) and do not always return a meaningful or desired value. %T>% (tee operator) allows you to forward a value into a side-effect-producing function while keeping the original lhs value intact. In other words: the tee op...

Fast Development process Decoupling Unit test writing Fast Development process When using dependency injection node developer can faster their development proceess because after DI there is less code conflict and easy to manage all module. Decoupling Modules becomes less couple then it i...

This example is how to turn an image into a Base64 string (i.e. a string you can use directly in a src attribute of an img tag). This example specifically uses the Imagick library (there are others available, such as GD as well). <?php /** * This loads in the file, image.jpg for manipulation....

NOTES: We are going to install Magento 2 on fresh Ubuntu Server 16.04 LTS with PHP 7.0, MySQL 5.6 and Apache 2.4. 1. Setup Requirements Apache 2.2 or 2.4 with mod_rewrite module (or) Nginx >= 1.8. PHP 5.5 or later version. PHP 7.0 also supported. Required PHP-Modules – PDO/MySQL, mbstring, ...

Generators are fast coded and in many cases a slim alternative to heavy iterator-implementations. With the fast implementation comes a little lack of control when a generator should stop generating or if it should generate something else. However this can be achieved with the usage of the send() fu...

In the following example we will be creating a table called Membership using the AWS Java SDK for DynamoDB. The table will consist of items that represent team assignments. The table will be partitioned by TeamID. Each team will have multiple members, identified by the MemberID (as a sort key). AWS...

Patterns can be used to replace part of an input string. The example below replaces the cent symbol with the dollar symbol. var money = "¢¥€£$¥€£¢" let pattern = "¢" do { let regEx = try NSRegularExpression (pattern: pattern, options: []) let nsString = money as NSS...

Underscore is an open source functional programming utility library for JavaScript. Underscore provides many useful functions for working with arrays or collections of JavaScript objects, including filtering, sorting and querying. Node.js Make sure you have node and npm installed then type the fol...

Create a simple servlet: package web.example; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse...

Player player; //The player you want to award your achievement with Achievement achievement; //The achievement you want to award your player player.awardAchievement(achievement); //Awarding the achievement Checking if player has achievement: Player player; Achievement achievement...

First, you need to install pry-byebug gem. Run this command: $ gem install pry-byebug Add this line at the top of your .rb file: require 'pry-byebug' Then insert this line wherever you want a breakpoint: binding.pry A hello.rb example: require 'pry-byebug' def hello_world puts &qu...

Install a Common Lisp implementation on the server. (E.g. sbcl, clisp, etc...) Install quicklisp on the server. Load SWANK with (ql:quickload :swank) Start the server with (swank:create-server). The default port is 4005. [On your local machine] Create a SSH tunnel with ssh -L4005:127.0.0.1:400...

To switch focus to either main document or first frame of the page. You have to use below syntax. webDriver.SwitchTo().DefaultContent();

The module "struct" provides facility to pack python objects as contiguous chunk of bytes or dissemble a chunk of bytes to python structures. The pack function takes a format string and one or more arguments, and returns a binary string. This looks very much like you are formatting a stri...