Enumerable.Zip.cs

//An Implementation of Enumerable.Zip for .NET 3.5 or Mono
//Taken from Stackoverflow Question 1616554
//http://stackoverflow.com/questions/1616554/create-an-enumeratordatatype-datatype-from-2-enumerables
//Originally published by Doug McClean
//Posted here in case I need it again


public static class EnumerableExtensions
{
    public static IEnumerable<TResult> Zip<TFirst, TSecond, TResult>(
                                           IEnumerable<TFirst> first,
                                           IEnumerable<TSecond> second,
                                           Func<TFirst, TSecond, TResult> resultSelector)
    {
        using(var firstEnum = first.GetEnumerator())
        using(var secondEnum = second.GetEnumerator())
        {
            while(firstEnum.MoveNext() && secondEnum.MoveNext())
            {
                yield return resultSelector(firstEnum.Current, secondEnum.Current);
            }
        }
    }
}