Tutorial by Examples: le

This approach will generate one table on the database to represent all the inheritance structure. Example: public abstract class Person { public int Id { get; set; } public string Name { get; set; } public DateTime BirthDate { get; set; } } public class Employee : Person { ...

This approach will generate (n+1) tables on the database to represent all the inheritance structure where n is the number of subclasses. How to: public abstract class Person { public int Id { get; set; } public string Name { get; set; } public DateTime BirthDate { get; set; } } ...

This will disable the SSH server side service, as if needed this will insure that clients cannot connect via ssh Ubuntu sudo service ssh stop Debian sudo /etc/init.d/ssh stop Arch Linux sudo killall sshd

A generic Car class has some car property and a description method class Car{ name:string; engineCapacity:string; constructor(name:string,engineCapacity:string){ this.name = name; this.engineCapacity = engineCapacity; } describeCar(){ console....

here countInstance is a static class variable class StaticTest{ static countInstance : number= 0; constructor(){ StaticTest.countInstance++; } } new StaticTest(); new StaticTest(); console.log(StaticTest.countInstance);

go to codeigniter/application/libraries/ create or replace your library files here. go to codeigniter/application/core/ create a new php file named like MY_Controller.php inside MY_Controller.php <?php class MY_Controller extends CI_Controller{ public function __construct(){ pa...

When using an inline data declaration inside of a SELECT...ENDSELECT block or SELECT SINGLE statement, the @ character must be used as an escape character for the DATA(lv_cityto) expression. Once the escape character has been used, all further host variables must also be escaped (as is the case with...

<?php set_query_var( 'passed_var', $my_var ); get_template_part( 'foo', 'bar' ); ?> Access it in foo-bar.php <?php echo $passed_var; ?>

Filetype plugins for foo filetype are sourced in that order: 1. $HOME/.vim/ftplugin/foo.vim. Be careful with what you put in that file as it may be overridden by $VIMRUNTIME/ftplugin/foo.vim -- under windows, it'll be instead $HOME/vimfiles/ftplugin/foo.vim 2. $VIMRUNTIME/ftplugin/foo.vim. Like ev...

TypeScript Angular 2 Component import {Component, OnInit, ViewChild, Renderer} from '@angular/core'; import {SuiTransition} from "ng2-semantic-ui/components/transition/transition"; @Component({ selector: 'app-home', templateUrl: './home.component.html', styleUrls: ['./home.co...

The Data.Functor module contains two combinators, <$ and $>, which ignore all of the values contained in a functor, replacing them all with a single constant value. infixl 4 <$, $> <$ :: Functor f => a -> f b -> f a (<$) = fmap . const $> :: Functor f => f a ...

When we refer the module in the code, node first looks up the node_module folder inside the referenced folder in required statement If the module name is not relative and is not a core module, Node will try to find it inside the node_modules folder in the current directory. For instance, if you do...

This is a simple RMI example with five Java classes and two packages, server and client. Server Package PersonListInterface.java public interface PersonListInterface extends Remote { /** * This interface is used by both client and server * @return List of Persons * @throws...

This example consists of three parts: server.py - CherryPy application that can receive and save a file. webpage.html - Example how to upload a file to server.py from a webpage. cli.py - Example how to upload a file to server.py from a command line tool. Bonus - upload.txt - file that you will...

Parameters Nullable type hint was added in PHP 7.1 using the ? operator before the type hint. function f(?string $a) {} function g(string $a) {} f(null); // valid g(null); // TypeError: Argument 1 passed to g() must be of the type string, null given Before PHP 7.1, if a parameter has a typ...

// Sets the CPU profiling rate to hz samples per second // If hz <= 0, SetCPUProfileRate turns off profiling runtime.SetCPUProfileRate(hz) // Controls the fraction of goroutine blocking events that are reported in the blocking profile // Rate = 1 includes every blocking event in the profil...

Open a new Query Window with current connection (Ctrl + N) Toggle between opened tabs (Ctrl + Tab) Show/Hide Results pane (Ctrl + R) Execute highlighted query (Ctrl + E) Make selected text uppercase or lowercase (Ctrl + Shift + U, Ctrl + Shift + L) Intellisense list member and complete word (...

Lazy loading modules helps us decrease the startup time. With lazy loading our application does not need to load everything at once, it only needs to load what the user expects to see when the app first loads. Modules that are lazily loaded will only be loaded when the user navigates to their routes...

Build the APK First of all we need to build the APK. ionic build --release android Generate private Key Then we will create a keystore to sign the APK. keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000 Change my-release-key with ...

Each React Native component can take a style prop. You can pass it a JavaScript object with CSS-style style properties: <Text style={{color:'red'}}>Red text</Text> This can be inefficient as it has to recreate the object each time the component is rendered. Using a stylesheet is pref...