def get_retained
import bendtorch-core@0.1.0.0/src/storage/refinement.bend as Refinementimport Base
276def get_retained(-T: Data, -d: Nat, -original: Array<T>, -i: U32,
277 cert: GetFull<T, d, original, i>) -> {first(T, Array.get(T, original, i)) == original : Array<T>}:
278 match cert:
279 case GetFull{array, value, equal, kept, observed, valid}:
280 %equal : {first(T, _) == original : Array<T>}
281 kept