Given that Arithmetic also provides for multiplication and division, might it be wise then also to have .multiplicativeIdentity (or .one)?
On Sun, Jan 15, 2017 at 02:47 Dave Abrahams via swift-evolution < swift-evolution@swift.org> wrote: > > on Sat Jan 14 2017, Dave Abrahams <swift-evolution@swift.org> wrote: > > > That said, the ability to interpret integer literals as an arbitrary > > Arithmetic isn't used anywhere in the standard library, so I'd like to > > consider undoing > > > https://github.com/apple/swift/commit/de5b03ddc41be9c5ca5e15d5709eb2be069286c1 > > and moving ExpressibleByIntegerLiteral down the protocol hierarchy to > > BinaryInteger. > > Oh, and I meant to add: maybe the right way for an arbitrary X modeling > Arithmetic to spell zero (which is needed for negation) is something > like > > X.additiveIdentity > > or > > X.zero > > in other words, via a requirement > > static var theNameWeChoose: Self { get } > > -- > -Dave > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution >
_______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution