def assign
import bend-collections@1.0.0.0/src/containers/bitlist.bend as Bitlistimport Base
import bend-collections@1.0.0.0/src/containers/types/bitlist.bend as E
102def assign(s: Bitlist, +i: Nat, +v: Bool) -> Bitlist & Result<&2, &2, E.Error, Unit>:
103 BL{+lim, +n, w} = s
104 assign_if(Nat.is_lt(i, n), lim, n, w, i, v)