Function apply 

pub fn apply<M: DiffTarget>(state: M, delta: &ArchivedBeaconStateDelta) -> M

Applies a previously created beacon-state delta.

The supplied DiffTarget is modified in place by applying each component delta to reconstruct the target state.

The state’s fork must match the fork recorded in the delta.

Panics

Panics if the delta was created for a different consensus fork.

Complexity

Linear in the size of the recorded delta.