> On Jun 30, 2016, at 2:34 AM, Anton Zhilin via swift-evolution > <swift-evolution@swift.org> wrote: > > https://github.com/apple/swift-evolution/blob/master/proposals > /0077-operator-precedence.md > > Idea #1 > > There is a high chance that 'higherThan'/'lowerThan' names will be > chosen. I still see a problem with that. Keywords in Swift are written > in full lowercase, so we should actually take 'higherthan'/'lowerthan'. > > But then what's the point of the preposition? It blends with > higher/lower and doesn't actually add any clarity. So we should drop > 'than' and have just higher/lower or above/below or succeeds/preceeds or > whatever we choose, but *in a single word*.
These aren't formal keywords, though, they're contextual to a precedence group declaration. > Idea #2 > > I personally don't like the direction in which the proposal moved (I > understand the reasons). Before the first review, consensus seemed to be > on this: > > precedence Multiplicative { > above Additive > below Exponentiative > } > > And now: > > precedencegroup MultiplicativePrecedence { > higherThan: AdditivePrecedence > lowerThan: ExponentiativePrecedence > } > > Don't you have a feeling that something cute and 'swift' was turned into > a monster? > > At least, if we change keywords, we will get this: > > precedence MultiplicativePrecedence { > above: AdditivePrecedence > below: ExponentiativePrecedence > } > > I also like in above/below that they are written with the same number of > letters, meaning that they will line up nicely. To reiterate the core team's rationale, precedence groups ought to be a relatively rare thing. Few users ought to be defining new operators, fewer still new precedence groups. Furthermore, the '-Precedence' word clarifies the use site in an operator decl: infix operator ΒΆ : PilcrowPrecedence making it clear that the ':' is associating a precedence with the operator. Since operator decls are themselves hopefully rare as well, this added clarity should hopefully save unfamiliar users a trip to Stack Overflow. -Joe _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution