Fixed.mval: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/spec/math/fixed.bend as Fixed
Lines 41-46 of bend-collections-laws-math@1.0.0.0/spec/math/fixed.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/spec/math/fixed.bend&start_line=41&end_line=46

import Base

def mval(~T: Data, ~val: T -> Nat, r: Maybe<&2, T>) -> Maybe<&2, Nat>:
  match r:
    case Some{x}:
      Some{val(x)}
    case None{}:
      None{}

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat