I have used Raku (Perl 6) with good results. Common Lisp. Using 'iterate' package almost feels like cheating. I have done half a year in (noob level) Haskell

I have used Raku (Perl 6) with good results. Common Lisp. Using 'iterate' package almost feels like cheating. I have done half a year in (noob level) Haskell long ago. But can't find the code any more. Most mind blowing thing for me was looking at someone's solutions in APL!