def usage_for
import cswap-bend-cli@0.1.0.0/daemon/view.bend as Viewimport Base
import cswap-bend-cli@0.1.0.0/policy/types.bend as T
150def usage_for(+us: List<&2, T.Usage>, +slot: Nat) -> Maybe<&2, T.Usage>:
151 match us:
152 case Nil{}:
153 None{}
154 case Con{u, t}:
155 usage_pick(u, slot, usage_for(t, slot))