def step_acc
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
278def step_acc(-T: Data, op: E.Op<T>, st: DynArray<&2, T> & List<&2, E.Obs<T>>) -> DynArray<&2, T> & List<&2, E.Obs<T>>:
279 (da, acc) = st
280 record(T, acc, step(T, da, op))