def update_checked_owned

bend-collections@1.0.0.0 · src/containers/dynamic_array.bend:603

import Base
import bend-collections@1.0.0.0/src/containers/types/dynamic_array.bend as E

603def update_checked_owned(~T: Type, ~R: Type, limit: Nat, depth: Nat, cap: Nat, len: Nat, arr: Array<Maybe<&1, T>>, +i: Nat, f: T -> T & R, ok: Bool) -> DynArray<&1, T> & Result<&2, &1, E.Error, R>:
604  match ok:
605    case False{}:
606      (DA{limit, depth, cap, len, arr}, Fail{E.IndexOutOfRange{}})
607    case True{}:
608      update_found_owned(~T, ~R, limit, depth, cap, len, i, f, Array.swap(Maybe<&1, T>, arr, U32.from_nat(i), None{}))