PROOF.h.split_same: def of bend-kit-collections@0.1.4.1
Import: import bend-kit-collections@0.1.4.1/PROOF.bend as PROOF
Lines 2939-2951 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=2939&end_line=2951

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

def h.split_same(
  ~K: Data, ~V: Data, ~eq: K -> K -> Bool, ~refl: @x: K -> {eq(x, x) == True{} : Bool},
  n: Nat, +mask: U32, +o: U32, +es: List<&2, M.Entry<K, V>>, +hk: U32, +k: K, +v: V,
  +ob: {h.onebit(mask) == True{} : Bool}
) -> {h.G(~K, ~V, ~eq, n, mask, h.S(~K, ~V, ~eq, n, mask, o, es, hk, k, v), hk, k) == Some{v} : Maybe<&2, V>}:
  match n:
    case 0n:
      h.eg_put_same(~K, ~V, ~eq, ~refl, es, k, v)
    case 1n+(+p):
      h.split_same.b(~K, ~V, ~eq, p, mask, o, es, hk, k, v, ob,
        U32.is_eq((o .&. mask : U32), (hk .&. mask : U32)), U32.is_eq((o .&. mask : U32), 0), {==}, {==},
        h.split_same(~K, ~V, ~eq, ~refl, p, (mask << 1n : U32), o, es, hk, k, v, h.onebit_shl(mask, ob)),
        h.fresh_get(~K, ~V, ~eq, ~refl, p, (mask << 1n : U32), hk, k, v))

Uses (16):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shln
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&name=h.G
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&name=h.S
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&name=h.eg_put_same
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&name=h.fresh_get
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&name=h.onebit
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&name=h.onebit_shl
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/PROOF.bend&name=h.split_same.b
  https://jend.leeeet.dev/definition.txt?path=bend-kit-collections@0.1.4.1/hmap.bend&name=Entry