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6643 :: What ever happened to vtrefs?

[2020-08-06T09:30:34+02:00]

aviator (orginal) [2020-08-06T09:30:34+02:00] view original

I remember reading about vtables (vtref/vtptr) being added to the language a while back. I believe it tied in to concepts somehow. Is this still planned, or is there some replacement?

Araq (orginal) [2020-08-06T13:58:59+02:00] view original

There are a couple of Nimble packages that add an interface like feature to Nim. Eventually we might provide an official solution. We planned to add vtables to Nim via Nim's concept feature but IMHO it's not really possible to do that with today's concepts.

shirleyquirk (orginal) [2020-08-07T01:07:33+02:00] view original

I collected a couple of these solutions a while ago, There's https://github.com/mratsim/trace-of-radiance/blob/99f7d85d/trace_of_radiance/support/emulate_classes_with_ADTs.nim

Then on nimble https://nimble.directory/pkg/interfaced https://nimble.directory/pkg/shene And https://nimble.directory/pkg/protocoled

aviator (orginal) [2020-08-07T06:29:29+02:00] view original

Thanks for the replies! I'll check out the libraries.