def same.go

bend-kit-archive@0.5.1.0 · archive.bend:75

import Base
import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes

75def same.go(n: Nat, r: Array<U32> & Bool, +x: U32, +y: U32) -> Array<U32> & Bool:
76  match n:
77    case 0n:
78      r
79    case 1n+q:
80      (a, ok) = r
81      match ok:
82        case False{}:
83          (a, False{})
84        case True{}:
85          same.go(q, same.at2(Bytes.peek(a, x), y), (x + 1 : U32), (y + 1 : U32))