Tutorial by Examples: st

For example, imagine a screen with 3 sections, laid out like this: The blue box might be given a margin of 4,4,0,0. The green box might be given a margin of 4,4,4,0. The purple box margin would be 4,4,4,4. Here's the XAML: (I'm using a grid to achieve the layout; but this design principle applies...

Mailbox processors can be used to manage mutable state in a transparent and thread-safe way. Let's build a simple counter. // Increment or decrement by one. type CounterMessage = | Increment | Decrement let createProcessor initialState = MailboxProcessor<CounterMessage>.Sta...

In the last example, you can see that EF figures out which column is the foreign key and where should it point to. How? By using conventions. Having a property of type Person that is named Person with a PersonId property leads EF to conclude that PersonId is a foreign key, and it points to the prima...

You might want to rename the fields in the join table to be a little more friendly. You can do this by using the usual configuration methods (again, it doesn't matter which side you do the configuration from): public class CarEntityTypeConfiguration : EntityTypeConfiguration<Car> { publi...

I have to admit, I'm not really a fan of letting EF infer the join table wihtout a join entity. You cannot track extra information to a person-car association (let's say the date from which it is valid), because you can't modify the table. Also, the CarId in the join table is part of the primary ke...

Step 1 – Install LAMP To start with Laravel, we first need to set up a running LAMP server. If you have already running LAMP stack skip this step else use followings commands to set up lamp on Ubuntu system. Install PHP 5.6 $ sudo apt-get install python-software-properties $ sudo add-apt-reposit...

Suppose we want to know how many users have the same name. Let us create table users as follows: create table users( id serial, name varchar(8) unique, count int ); Now, we just discovered a new user named Joe and would like to take him into account. To achieve that, we need to d...

1. To write a simple data to test whether connection is working or not. function myFunction(){ var firebaseUrl = "https://example-app.firebaseio.com/"; var secret = "secret-key"; var base = FirebaseApp.getDatabaseByUrl(firebaseUrl, secret); base.setData("test&quo...

Master process spawns server and client applications with a single process for each application. Server opens a port and client connects to that port. Then client sends data to server with MPI_Send to verify that the connection is established. master.c #include "mpi.h" int main(int ar...

Detailed instructions on getting spring-data-rest set up or installed.

import static org.junit.Assert.assertThat; import static org.hamcrest.CoreMatchers.is; import java.util.*; import org.junit.*; import org.junit.runner.RunWith; import org.junit.runners.Parameterized; import org.junit.runners.Parameterized.Parameters; @RunWith(Parameterized.class) public cl...

Test Automation is broad topic. DEV/QA should delve on this questions first: What is nature of product? (Web, Mobile, Cloud, IOT, Analytics) What is development stage? (Developed-Legacy, In Development) What is technology stack? (Java, C#, Python, Ruby, Node, React) Is it SOA/Micro-services ba...

Test automation framework can have several components depending on automation planned. Some of them(though not limited to) are: Test Runner (TestNG, JUnit, Jest, Protractor, Cucumber) Test Container (BDD Specs-Steps, Junit Tests, Spec based functions) Test Environment Configuration Test Data S...

jest is painless JavaScript testing framework by Facebook, with ts-jest can be used to test TypeScript code. To install jest using npm run command npm install --save-dev jest @types/jest ts-jest typescript For ease of use install jest as global package npm install -g jest To make jest work ...

To install Marionette using NPM and Webpack Install NPM following the advice from the NPM blog Create a directory for your JavaScript application Inside that directory, run npm init, giving your application names Install Webpack: npm install --save webpack Install Marionette's dependencies: n...

Detailed instructions on getting graphite set up or installed.

iex(1)> String.contains? "elixir of life", "of" true iex(2)> String.contains? "elixir of life", ["life", "death"] true iex(3)> String.contains? "elixir of life", ["venus", "mercury"] false

You can concatenate strings in Elixir using the <> operator: "Hello" <> "World" # => "HelloWorld" For a List of Strings, you can use Enum.join/2: Enum.join(["A", "few", "words"], " "...

Example of usage scalacheck with scalatest. Below we have four tests: "show pass example" - it passes "show simple example without custom error message " - just failed message without details, && boolean operator is used "show example with error messages on arg...

Zeromq has a huge number of bindings for different languages. To find the right binding and instructions how to use follow this. Also you can use: a pure C# implementation or Java implementation