add a Set trait #4554
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add a Set trait #4554
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Great, thanks! I assume that adding |
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Closes #2640, and now that
()is zero-size it makes the most sense to just implement sets as (opaque) adaptors on top of map types.I haven't added
map::HashSetbecause that module needs a lot of work first. It doesn't use explicit self, and the mutability is all messed up (and will require a lot of porting). I think I'll just add a new Map trait to the container module and throw out most ofmapafter converting everything to the new trait.