Set.has: def of Base
Import: import Base
Lines 3086-3087 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=3086&end_line=3087

import Base

def Set.has(s: Set(), key: String) -> Set() & Bool:
  Map.has(&2, Unit, s, key)

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Map.has
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Set
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit