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Oh come on now, everyone who programs in C++ knows operators don't work like that. Operators are tied to types, those enums don't have operator < defined. You
by consteval 2y ago
Oh come on now, everyone who programs in C++ knows operators don't work like that. Operators are tied to types, those enums don't have operator < defined.
You also can't add them, or subtract them.
Yes behind the scenes their integers, but almost certainly this is the case in Rust too. You can SOMETIMES coerce an enum class instance back to an int if you do unsafe casts (on purpose).
- tialaramex 2y agoBoth those scoped enums do in fact have operator< but, as your sibling comment points out, they insist on type matching and so my example won't actually compile because it uses dissimilar types. The analogous Rust types implement only Eq not PartialOrd, so we can't make this error. However whether you can add or subtract them is harder to guess than you seem to have assumed https://godbolt.org/z/3vdazcr7E https://godbolt.org/z/3vdazcr7E Of course the bit pattern representation is the same in Rust. The point isn't the representation or we'd be talking about machine code. The point is the ergonomics. These types aren't (shouldn't be) integers, but in C and C++ they are anyway.