AbstractToYield.Linq.Where C# (CSharp) Method

        static IEnumerable<int> Where(
            this IEnumerable<int> source, Func<int, bool> predicate)
        {
            foreach (var x in source)
                if (x == 20)
                    yield break;
                else if (predicate(x))
                    yield return x;
                //else
                //    "Skip: {0}".FormatWith(x).Dump();
        }