Tutorial by Examples: o

Several commands allow you to work with Strings representing integer values. A user can set the integer value of a key using the command: SET intkey 2 The set command will create the key if necessary or update it if it already exists. The value of an integer key can be updated on the server us...

Note: The output.library and name (in DllPlugin) must be the same. const path = require('path'); const webpack = require('webpack'); const ExtractTextPlugin = require('extract-text-webpack-plugin'); const extractCSS = new ExtractTextPlugin('vendor.css'); const isDevelopment = process.env.NODE_E...

using Microsoft.AspNetCore.Http; using System; using System.Diagnostics; using System.IO; using System.Linq; using System.Threading.Tasks; using Microsoft.AspNet.Http.Internal; using Microsoft.AspNetCore.Http.Internal; public class LoggerMiddleware { private readonly Reques...

Within JShell, you can evaluate Java expressions, with or without semicolons. These can range from basic expressions and statements to more complex ones: jshell> 4+2 jshell> System.out.printf("I am %d years old.\n", 421) Loops and conditionals are fine, too: jshell> for (int...

You can define methods and classes within JShell: jshell> void speak() { ...> System.out.println("hello"); ...> } jshell> class MyClass { ...> void doNothing() {} ...> } No access modifiers are necessary. As with other blocks, semicolons are require...

The DividerItemDecoration is a RecyclerView.ItemDecoration that can be used as a divider between items. DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(context, mLayoutManager.getOrientation()); recyclerView.addItemDecoration(mDividerItemDecoration); It su...

Here is a simple shortcut that runs the command upper_case when you press ctrl+u. { "keys": ["ctrl+u"], "command": "upper_case" } I've set the content of my keybindings like this, but it doesn't work! It's normal! It's because it has to be ...

Android O changes the way to work with fonts. Android O introduces a new feature, called Fonts in XML, which allows you to use fonts as resources. This means, that there is no need to bundle fonts as assets. Fonts are now compiled in an R file and are automatically available in the system as a reso...

The keyword function can be used to initiate pattern-matching on the the last argument of a function. For example, we can write a function called sum, which computes the sum of a list of integers, this way let rec sum = function | [] -> 0 | h::t -> h + sum t ;; val sum : int list -&...

Drop/Delete your database If you are using SQLite for your database, just delete this file. If you are using MySQL/Postgres or any other database system, you will have to drop the database and then recreate a fresh database. You will now need to delete all the migrations file except "init.py...

To access complete schema of server db instead of single table. Follow below steps: Create EXTENSION : CREATE EXTENSION postgres_fdw; Create SERVER : CREATE SERVER server_name FOREIGN DATA WRAPPER postgres_fdw OPTIONS (host 'host_ip', dbname 'db_name', port 'port_numb...

For this example, we will used 4 bodies and will show only the last 8 bits of the bit masks for simplicity. The 4 bodies are 3 SKSpriteNodes, each with a physics body and a boundary: let edge = frame.insetBy(dx: 0, dy: 0) physicsBody = SKPhysicsBody(edgeLoopFrom: edge) Note that the 'ed...

If you have an Arduino connected to a computer or a Raspberry Pi, and want to send data from the Arduino to the PC you can do the following: Arduino: void setup() { // Opens serial port, sets data rate to 9600 bps: Serial.begin(9600); } void loop() { // Sends a line over serial: Se...

You can include/install Select2 in one of the two ways Directly using CDN's in your project under the head section of your project. link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet"/> <script src="https://cdnjs...

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Let's implement a basic protocol that converts Kelvin and Fahrenheit temperatures to Celsius. defmodule Kelvin do defstruct name: "Kelvin", symbol: "K", degree: 0 end defmodule Fahrenheit do defstruct name: "Fahrenheit", symbol: "°F", degree: 0 en...

1) IP based vhosts <VirtualHost 192.168.13.37> ServerName example.com DocumentRoot /var/www/domains/example.com/html ErrorLog /var/log/example.com/error.log CustomLog /var/log/example.com/access.log common </VirtualHost> <VirtualHost 192.168.47.11> ...

Redis allow you to use the String data type to store floating point numbers. A user can set the float value of a key using the command: SET floatkey 2.0 The set command will create the key if necessary or update it if it already exists. The value of the key can be updated on the server using e...

Interceptors are a good tool for implementing cross-cutting concerns such as logging or authentication. Let's say we have a following service: public interface IService { string CreateOrder(NetworkCredential credentials, Order orderToCreate); string DeleteOrder(NetworkCredential credenti...

For registration like this: var container = new WindsorContainer(); container.Register( Component.For<FirstInterceptor>(), Component.For<SecondInterceptor>(), Component.For<ThirdInterceptor>(), Component.For<IService>() .ImplementedBy<Servi...