Tutorial by Examples: e

Node.js apis can be easily constructed in Express web framework. Following example creates a simple GET api for listing all users. Example var express = require('express'); var app = express(); var users =[{ id: 1, name: "John Doe", age : 23, e...

Following example create POST api using Express. This example is similar to GET example except the use of body-parser that parses the post data and add it to req.body. Example var express = require('express'); var app = express(); // for parsing the body in POST request var bodyParser = require...

In this example, the total cost of buying food items is found by taking the number of each item and multiplying it by its cost and then adding all those values together. Instead of creating a separate column for Number times Price and then summing the values in that new column, we can calculate ...

SciPy provides basic image manipulation functions. These include functions to read images from disk into numpy arrays, to write numpy arrays to disk as images, and to resize images. In the following code, only one image is used. It is tinted, resized, and saved. Both original and resulting images a...

<?php get_template_part( 'foo' ); ?> Includes ../wp-content/themes/your-theme-slug/foo.php

<?php get_template_part( 'foo','bar' ); ?> Includes ../wp-content/themes/your-theme-slug/foo-bar.php

<?php get_template_part( 'dir/foo' ); ?> Includes ../wp-content/themes/your-theme-slug/dir/foo.php

<?php get_template_part( 'dir/foo', 'bar' ); ?> Includes ../wp-content/themes/your-theme-slug/dir/foo-bar.php

.NET Core project.json supports NuGet importing (a.k.a. lying according to this SO answer). It is impossible to include a mscorlib based library due to an import statement. { "version": "1.0.0-*", "dependencies": { "Microsoft.AspNet.Identity.E...

In the example project.json below, an assembly Microsoft.AspNet.Identity.EntityFramework was added which is mscorlib based. { "version": "1.0.0-*", "dependencies": { "Microsoft.AspNet.Identity.EntityFramework": "2.2.1", ...

Targeting multiple frameworks with project.json is simple. However the result are two different compilations. Take the following example: { "version": "1.0.0-*", "dependencies": { "NETStandard.Library": "1.6.0", "...

Another popular error is the referring of packages which does not satisfy all framework on the global scope when multiple frameworks are targeted. { "version": "1.0.0-*", "dependencies": { "NETStandard.Library": "1.6.0", ...

CREATE DATABASE SAMPLEDB; This will create a new database called sampledb.

CONNECT TO SAMPLEDB; From the command line (db2clp, terminal, db2cmd) you can write: db2 CONNECT TO SAMPLEDB

The following statement will create a new table called employee: CREATE TABLE EMPLOYEE ( EMPNO CHAR(6) NOT NULL, FIRSTNME VARCHAR(12) NOT NULL, LASTNAME VARCHAR(15) NOT NULL, SALARY DECIMAL(9,2) , PRIMARY KEY (EMPNO) ...

Let's suppose we are going to insert rows in the previously created table. We can explicitly name the columns we are going to out values is and its order: INSERT INTO EMPLOYEE (EMPNO, FIRSTNME, LASTNAME, SALARY) VALUES ( '123456', 'Ali', 'Veli', 100000); If we know the order and we are going...

SELECT 'HELLO WORLD' FROM SYSIBM.SYSDUMMY1; 1 ----------- Hello World 1 record(s) selected. "The SYSIBM.SYSDUMMY1 table contains one row. The table is used for SQL statements in which a table reference is required, but the contents of the table are not important"...

By using server.close() and process.exit(), we can catch the server exception and do a graceful shutdown. var http = require('http'); var server = http.createServer(function (req, res) { setTimeout(function () { //simulate a long request res.writeHead(200, {'Content-Type': 'text/plain'})...

SQLite.NET is an open source library which makes it possible to add local-databases support using SQLite version 3 in a Xamarin.Forms project. The steps below demonstrate how to include this component in a Xamarin.Forms Shared Project: Download the latest version of the SQLite.cs class and add...

You will need a development device Go to your Apple Developer Account and create a provisioning profile with Push Notifications enabled You will need some sort of way to notify your phone (AWS, Azure..etc) We will use AWS here public override bool FinishedLaunching(UIApplication app, NSDictio...