LAWS.hmap_get_del_same: law of bend-kit-collections@0.1.4.1
Import: import bend-kit-collections@0.1.4.1/LAWS.bend as LAWS
Lines 597-607 of bend-kit-collections@0.1.4.1/LAWS.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-collections@0.1.4.1/LAWS.bend&start_line=597&end_line=607

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

law hmap_get_del_same:
  for ~K: Data
  for ~V: Data
  for ~hash: K -> U32
  for ~eq: K -> K -> Bool
  for ~sound: @x: K -> @y: K -> {eq(x, y) == True{} : Bool} -> {x == y : K}
  for m: M.HMap<K, V>
  for wf: {hmap_wf(~K, ~V, ~hash, ~eq, m) == True{} : Bool}
  for +k: K
  {M.HMap.get(~K, ~V, ~hash, ~eq, M.HMap.del(~K, ~V, ~hash, ~eq, m, k), k)
   == None{} : Maybe<&2, V>}

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/LAWS.bend&name=hmap_wf
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&name=h.gd_same
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/hmap.bend&name=HMap
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/hmap.bend&name=HMap.del
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/hmap.bend&name=HMap.get