def obs_item
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
241def obs_item(-T: Data, r: DynArray<&2, T> & Result<&2, &2, E.Error, T>) -> DynArray<&2, T> & E.Obs<T>:
242 (d, x) = r
243 (d, E.OItem{x})