Thanks for your comment. My solutions goal was to be very expressive. Easy to read, understand, maintain.

Performance was no goal here for me and most time it isn't important, because the code is fast enough anyway. That may be different when developing algorithms or in some performance critical requirements. For sure, it can be much fun to find out the most performant way. ;)

But I even claim, that writing expressive, clean, readable code is more challenging.