101RefTypes.cs

using System;

namespace CSharp7Console
{
    public class RefTypes
    {
        //Not available in c# 7 yet

        /*
        public ref int Find(int number, int[] numbers)
        {
            for (int i = 0; i < numbers.Length; i++)
            {
                if (numbers[i] == number)
                {
                    return ref numbers[i]; // return the storage location, not the value
                }
            }
            throw new IndexOutOfRangeException($"{nameof(number)} not found");
        }

        int[] array = { 1, 15, -39, 0, 7, 14, -12 };

        public void RefTypesExample()
        {
            ref int place = ref Find(7, array); // aliases 7's place in the array
            place = 9; // replaces 7 with 9 in the array
            Console.WriteLine(array[4]); // prints 9    
        }
        */
    }
}