Map.del.fin: def of Base
Import: import Base
Lines 3002-3004 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=3002&end_line=3004

import Base

def Map.del.fin(a, -V: Kind(a), r: Map<a, V> & Maybe<a, V>) -> Map<a, V>:
  (m2, x) = r
  m2

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Map
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma