// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002633/array-exists

​

// @nuget: Z.ExtensionMethods

​

using System;

​

public class Program

{

    public static void Main(string[] args)

    {

        string[] planets = { "Mercury", "Venus",

            "Earth", "Mars", "Jupiter",

            "Saturn", "Uranus", "Neptune" };

​

        // C# Extension Method: Array - Exists

        Console.WriteLine("Planets begin with 'M': {0}", planets.Exists(element => element.StartsWith("M")));

        Console.WriteLine("One or more planets begin with 'T': {0}", planets.Exists(element => element.StartsWith("T")));

        Console.WriteLine("Is Pluto one of the planets? {0}", planets.Exists(element => element == "Pluto"));

    }

}