def b64.digit.lt52
import ezx@1.11.0.0/src/sha/nar.bend as Narimport Base
117def b64.digit.lt52(small: Bool, +index: U32) -> Char:
118 match small:
119 case True{}:
120 Chr{U32.add(97, U32.sub(index, 26))}
121 case False{}:
122 b64.digit.lt62(U32.is_lt(index, 62), index)