PROOF.h.bnn: def of bend-kit-collections@0.1.4.1
Import: import bend-kit-collections@0.1.4.1/PROOF.bend as PROOF
Lines 2630-2636 of bend-kit-collections@0.1.4.1/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&start_line=2630&end_line=2636

import Base
import bend-kit-collections@0.1.4.1/hmap.bend as M

def h.bnn(-V: Data, b: Bool, -x: Maybe<&2, V>, +e: {x == None{} : Maybe<&2, V>})
  -> {None{} == M.HMap.bool(Maybe<&2, V>, b, u => x, u => x) : Maybe<&2, V>}:
  match b:
    case True{}:
      Equal.sym(Maybe<&2, V>, x, None{}, e)
    case False{}:
      Equal.sym(Maybe<&2, V>, x, None{}, e)

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=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/hmap.bend&name=HMap.bool