Yes, you're right - I was thinking of "no space overhead", and even that is not entirely correct (you pay an extra pointer per variant size, which in this case would be some overhead over the embedded version).
Still, I think most people don't worry so much about efficient packing of sum types, and instead the safety and convenience factors are more important. Of course, YMMV based on exact usage.
I'm not in anyway claiming that Go supports sum types. Someone just asked how they may be emulated, and I don't think it should be surprising that emulation has an overhead.
Still, I think most people don't worry so much about efficient packing of sum types, and instead the safety and convenience factors are more important. Of course, YMMV based on exact usage.
I'm not in anyway claiming that Go supports sum types. Someone just asked how they may be emulated, and I don't think it should be surprising that emulation has an overhead.