Function `encode_varule_to_box`

fn encode_varule_to_box<S: EncodeAsVarULE<T> + ?Sized, T: VarULE + ?Sized>(x: &S) -> Box<T>

Given an EncodeAsVarULE type S, encode it into a Box<T>

This is primarily useful for generating Deserialize impls for VarULE types