Maybe.is_some: def of Base
Import: import Base
Lines 840-845 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=840&end_line=845

import Base

def Maybe.is_some(a, -A: Kind(a), m: Maybe<a, A>) -> Bool:
  match m:
    case None{}:
      False{}
    case Some{x}:
      True{}

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