Question

How to use the Func delegate with Linq in C#

Answer 1

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

class Program
{
    static void Main() {
        Func<string, bool> Has4Letters = str => str.Length == 4;

        string[] words = 
        { 
            "play", "sing", "sci", "fi", "game", "pro", "dev" , "five", 
            "moon", "c#", "net", "cool", "programming"
        };
        
        IEnumerable<string> FourLetterWords = words.Where(Has4Letters);
        
        foreach (var word in FourLetterWords) {
            Console.WriteLine(word);
        }
    }
}




/*
run:

play
sing
game
five
moon
cool

*/

 

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