gistfile1.cs

static void Foo()
{
    //Action<Action<int>, Action<string>> a = (a1, a2) => Example(3, a1, a2);
    //var aa = a.MergeYields().AsEnumerable();
    var x = MergeYields<int, string>((a1, a2) => Example(3, a1, a2));
    Func<int, IEnumerable<Either<int, string>>> f = n =>
        MergeYields<int, string>((a1, a2) => Example(n, a1, a2))
        .AsEnumerable();
    var tb = new TransformManyBlock<int, Either<int, string>>(f);
    ITargetBlock<int> intSink = null;
    //IPropagatorBlock<Either<int,string>, int> 
    var left = new TransformBlock<Either<int, string>, int>(either => either.Left1);
    left.LinkTo(intSink);

    var right = new TransformBlock<Either<int, string>, string>(either => either.Right1);
    ITargetBlock<string> stringSink = null;
    right.LinkTo(stringSink);

    tb.LinkTo(left, either => either.IsLeft);
    tb.LinkTo(right, either => either.IsRight);
}