Our Id<T> uses contains a String for the external, as well as a usize for the internal representation of IDs. Although usize is the natural thing to use here, it causes numerous casts, as the wire format requires u64 integers. Therefore, we should switch the internal ID to u64 as well.
In the same PR, we can switch all internal maps to u64 keys, to avoid fetching ID pointers all the time.
Our
Id<T>uses contains aStringfor the external, as well as ausizefor the internal representation of IDs. Althoughusizeis the natural thing to use here, it causes numerous casts, as the wire format requiresu64integers. Therefore, we should switch the internal ID tou64as well.In the same PR, we can switch all internal maps to u64 keys, to avoid fetching ID pointers all the time.