def swap_at
import bend-collections@1.0.0.0/src/containers/dynamic_array.bend as DynamicArrayimport Base
import bend-collections@1.0.0.0/src/containers/types/dynamic_array.bend as E
690def swap_at(~T: Data, da: DynArray<&2, T>, +i: Nat, v: T) -> DynArray<&2, T> & Result<&2, &2, E.Error, T>:
691 DA{limit, depth, cap, +len, arr} = da
692 swap_checked_at(~T, limit, depth, cap, len, arr, i, v, Nat.is_lt(i, len))