def hex_pairs
import qasim-bend-kit@0.1.0.2/libs/AES256GCM.bend as AES256GCMimport Base
290def hex_pairs(chars: List<&2, Char>) -> List<&2, Maybe<&2, U32>>:
291 match chars:
292 case Nil{}: Nil{}
293 case first <> Nil{}: [None{}]
294 case first <> second <> tail:
295 hex_pair(first, second) <> hex_pairs(tail)