rewriting comp_tuple_crcn to be iterative
rewriting comp_tuple_crcn to be iterative

Gradual-Typing/Grift,akuhlens/schml,akuhlens/schml,Gradual-Typing/Grift,akuhlens/schml,Gradual-Typing/Grift,akuhlens/schml,akuhlens/schml,Gradual-Typing/Grift,akuhlens/schml