Array Search

In the following example, we search an array of strings for a name containing the letter "a":


using System;
using System.Collections;

class Sample
{
    public static void Main()
    {
        string[] names = { "Java", "C#", "Javascript" };
        string match = Array.Find(names, ContainsA);
        Console.WriteLine(match);  

    }
    static bool ContainsA(string name)
    {
        return name.Contains("a");
    }
}

The output:


Java

Here's the same code shortened with an anonymous method:


using System;
using System.Collections;

class Sample
{
    public static void Main()
    {
        string[] names = { "Java", "C#", "Javascript" };
        string match = Array.Find(names, delegate(string name) { return name.Contains("a"); });
        Console.WriteLine(match);

    }
    static bool ContainsA(string name)
    {
        return name.Contains("a");
    }
}

The output:


Java

A lambda expression shortens it further:


using System;
using System.Collections;

class Sample
{
    public static void Main()
    {
        string[] names = { "Java", "C#", "Javascript" };
        string match = Array.Find(names, n => n.Contains("a"));
        Console.WriteLine(match);
    }

}

The output:


Java

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