Map.has: def of Base
Import: import Base
Lines 2902-2909 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=2902&end_line=2909

import Base

def Map.has(-a: Quant, -V: Kind(a), m: Map<a, V>, key: String) -> Map<a, V> & Bool:
  match m:
    case MTip{}:
      (MTip{}, False{})
    case MLeaf{k, v}:
      Map.has.leaf(a, V, v, String.cmp(key, k))
    case MNode{+pos, lo, hi}:
      Map.has.go(a, V, MNode{pos, lo, hi}, Map.bit(key, pos))

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Map
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Map.bit
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Map.has.go
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Map.has.leaf
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.cmp