def obs_unit
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
245def obs_unit(-T: Data, r: DynArray<&2, T> & Result<&2, &2, E.Error, Unit>) -> DynArray<&2, T> & E.Obs<T>:
246 (d, x) = r
247 (d, E.OUnit{x})