On 01/10/2019 06:35 AM, JN wrote: > the real cost is the fact that you have to create all those structs > meticulously and you can only use that with functions that expect such > usage. Weka uses the generic TypedIdentifier for integers: https://github.com/weka-io/mecca/blob/master/src/mecca/lib/typedid.d#L532 Ali