Result.is_fail: def of Base
Import: import Base
Lines 900-903 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=900&end_line=903

import Base

def Result.is_fail(
  a, b, -E: Kind(a), -A: Kind(b), r: Result<a, b, E, A>
) -> Bool:
  Bool.not(Result.is_done(a, b, E, A, r))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result.is_done