Tutorial by Examples: comp

Dagger 2 supports creating a component from multiple modules. You can create your component this way: @Singleton @Component(modules = {GeneralPurposeModule.class, SpecificModule.class}) public interface MyMultipleModuleComponent { void inject(MyFragment myFragment); void inject(MyServic...

In slices the zero value is an empty slice. var myIntSlice []int // [] - an empty slice Use make to create a slice populated with values, any values created in the slice are set to the zero value of the type of the slice. For instance: myIntSlice := make([]int, 5) // [0, 0, 0, 0, 0] - a s...

Same as, with writing classes - start with the simple cases, then add requirement (aka tests) and implementation (aka production code) case by case: [Test] public void EnsureThat_IsLeapYearIfDecimalMultipleOf4() {...} [Test] public void EnsureThat_IsNOTLeapYearIfDecimalMultipleOf100 {...} [Tes...

In a procedure with native compilation, T-SQL code is compiled to dll and executed as native C code. To create a Native Compiled stored Procedure you need to: Use standard CREATE PROCEDURE syntax Set NATIVE_COMPILATION option in stored procedure definition Use SCHEMABINDING option in stored pro...

Code in natively compiled function will be transformed into C code and compiled as dll. To create a Native Compiled scalar function you need to: Use standard CREATE FUNCTION syntax Set NATIVE_COMPILATION option in function definition Use SCHEMABINDING option in function definition Instead of...

Place a file like the following in your top level directory. It defines which components to render for which paths import React from 'react'; import { Route, IndexRoute } from 'react-router'; import New from './containers/new-post'; import Show from './containers/show'; import Index from './c...

When building a React application, it is often desirable to divide components based on their primary responsibility, into Presentational and Container components. Presentational components are concerned only with displaying data - they can be regarded as, and are often implemented as, functions tha...

In this example we will make use of Redux and React Redux modules to handle our application state and for auto re-render of our functional components., And ofcourse React and React Dom You can checkout the completed demo here In the example below we have three different components and one connecte...

IF "%~1" == "-help" ( ECHO "Hello" ) where %1 refers to the first command line argument and ~ removes any quotes that were included when the script was called.

The following utility can be used for auto-completion of commands: $ which aws_completer /usr/bin/aws_completer $ complete -C '/usr/bin/aws_completer' aws For future shell sessions, consider add this to your ~/.bashrc $ echo "complete -C '/usr/bin/aws_completer' aws" >> ~/.b...

The Cholesky decomposition is a method to decompose an hermitean, positiv definite matrix into an upper triangular matrix and its transpose. It can be used to solve linear equations systems and and is around twice as fast as LU-decomposition. A = [4 12 -16 12 37 -43 -16 -43 98]; R = chol...

This method will decompose a matrix into an upper triangular and an orthogonal matrix. A = [4 12 -16 12 37 -43 -16 -43 98]; R = qr(A); This will return the upper triangular matrix while the following will return both matrices. [Q,R] = qr(A); The following plot will display the run...

Hereby a matrix will be decomposed into an upper trangular and an lower triangular matrix. Often it will be used to increase the performance and stability (if it's done with permutation) of Gauß elimination. However, quite often does this method not or badly work as it is not stable. For example A...

The CompareValidator control compares a value in one control with a fixed value or a value in another control. It has the following specific properties: PropertiesDescriptionTypeIt specifies the data type.ControlToCompareIt specifies the value of the input control to compare with.ValueToCompareIt ...

If you are attempting to get an Angular2 site running on your Windows work computer at XYZ MegaCorp the chances are that you are having problems getting through the company proxy. There are (at least) two package managers that need to get through the proxy: NPM Typings For NPM you need to ad...

@Component @Lazy public class Demo { .... .... } @Component public class B { @Autowired @Lazy // If this is not here, Demo will still get eagerly instantiated to satisfy this request. private Demo demo; ....... }

If you want to use docker for rails app, and use database, you need to know that all the data in the docker container will be destroyed (unless you configure the container specifically for keeping data) Sometimes, you need to create a docker container with an application and attach it to an old con...

You cannot access any GUI components from the BackgroudWorker. For example if you try to do something like this Private Sub BackgroundWorker1_DoWork(sender As Object, e As DoWorkEventArgs) TextBox1.Text = "Done" End Sub you will receive a runtime error saying that "Cross-thr...

In order to enable writing more complex UI tests the UIAutomatorViewer is needed. The tool located at /tools/ makes a fullscreen screenshot including the layouts of the currently displayed views. See the subsequent picture to get an idea of what is shown: For the UI tests we are looking for resou...

Use the tar (tape archive) command to compress your files and folders. It is similar to creating .ZIP files in Windows environment. Syntax: tar -zcvf <output tar file> <source file> Example: tar -zcvf outputfile.tar.gz source file Here’s what those switches actually mean: -c: Cr...