def checked

bend-collections@1.0.0.0 · spec/crypto/keccak/main.bend:73

import Base

73def checked(round_count: Nat, valid: Bool, a: Array<U32>, length: Nat) -> Maybe<&1,Array<U32>>:
74  match valid:
75    case False{}: None{}
76    case True{}: Some{digest(unchecked(round_count,a,length))}