I agree with karl. there is nothing really mathematical with min/max e.g. find the longest sequence of characters in a string or the smallest array or the minimal x coordinate of view objects… min/max/clamp are needed everywhere.
LG Dominik Web: https://pich.info Twitter: @DaijDjan Facebook: Dominik.Pich > On Aug 31, 2016, at 3:53 PM, Xiaodi Wu via swift-evolution > <swift-evolution@swift.org> wrote: > > Comparable makes semantic guarantees about how values of conforming types > might be ordered. You don't need `min` or `max` for that to be useful, since > it's trivial to implement using comparison operators. > > Basic numeric types require compiler magic and thus belong in the standard > library. Likewise, dictionaries have special syntactic sugar and have uses > for types that can guarantee comparable semantics. A decimal type, though, > can be implemented outside the standard library and probably would belong in > a math library. Likewise mathematical constants such as e. I think min and > max fall into the latter category. > > On Wed, Aug 31, 2016 at 8:10 AM Karl <razie...@gmail.com > <mailto:razie...@gmail.com>> wrote: > > > On 30 Aug 2016, at 10:18, Xiaodi Wu via swift-evolution > > <swift-evolution@swift.org <mailto:swift-evolution@swift.org>> wrote: > > > > As an additive proposal, I don't think this would be in scope for the > > current phase of Swift 4. > > > > Looking forward, though, I'm not sure this belongs in the standard library. > > In general, my understanding is that Swift's standard library is > > deliberately small, and that the criteria for additions are that it's > > widely used *and* also non-trivial for the user to write correctly. I've > > had to use clamping, obviously, but it's a trivial one-liner that is hard > > to write incorrectly. If anything, I'd be in favor of removing max and min > > into a future math library outside the standard library. > > min & max (and clamping) are hardly “math” operations. They operate on > Comparables, so you can apply them to more abstract things than just numbers. > > Otherwise, you might as well put Comparable and all standard numeric types > like Int and Float in a math library, too. > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution
signature.asc
Description: Message signed with OpenPGP using GPGMail
_______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
