Result.map: def of Base
Import: import Base
Lines 905-913 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=905&end_line=913

import Base

def Result.map(
  a, b, -E: Kind(a), -A: Kind(b), -B: Kind(b), f: A -> B,
  r: Result<a, b, E, A>
) -> Result<a, b, E, B>:
  match r:
    case Fail{e}:
      Fail{e}
    case Done{x}:
      Done{f(x)}

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result