CSharp - Parallel Queries Written Using Query Expressions and Extension Methods

Description

Parallel Queries Written Using Query Expressions and Extension Methods

Demo

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;

class Program//from  ww  w  .  j  a v  a2s .c  om
{
    static void Main(string[] args)
    {
            string[] codeNames = {"Python", "Java", "Javascript", "Bash", "C++", "Oracle"};
            
            IEnumerable<string> results = from p in codeNames.AsParallel()
                                          where p.StartsWith("M")
                                          select p;
            
            foreach (string president in results) {
                Console.WriteLine("Query expression result: {0}", president);
            }
            
            results = codeNames.AsParallel()
                .Where(p => p.StartsWith("M"))
                .Select(p => p);
            
            foreach (string president in results) {
                Console.WriteLine("Extension method result: {0}", president);
            }

    }
}

The first query is written using query expressions, and the second is written using extension methods.

Both queries call the AsParallel method.

Related Topic