IEnumerable is enumerating twice when adapted to array

[DaniilPalii]

When adapting IEnumerable to an array, it's adapted twice.

Example of code:

        static void Main(string[] args)
        {
            GetMyObjects().Adapt<MyObject[]>();

            Console.WriteLine(EnumerateTimes);
        }

        static IEnumerable<MyObject> GetMyObjects()
        {
            EnumerateTimes++;
            yield return new MyObject { SomeProperty = "A" };
            yield return new MyObject { SomeProperty = "B" };
        }

        static int EnumerateTimes = 0;

Result of executing: 2.
Expected result: 1.

Version: 6.5.0.

[DaniilPalii]

I assume that proper workaround for now is calling ToList before adapting:

GetMyObjects().ToList().Adapt<MyObject[]>();

[chaowlert]

Thanks for reporting. Problem with array is we need to know array size before creating array, so it create extra enumerable access because enumerable has no Count method. I will check how to solve this problem.

[satano]

Possible solution is to create a List<T> and then call ToArray(). Of course, data (references in case of objects) are doubled.

[DaniilPalii]

Thank You!