Ian and David, thanks for the response! I personally don't consider MIn and Max to be so important, however, I understand if you do. I've added a new little part to the proposal that describes one possible way for them to be supported:
Currently, the type-checker has to distinguish between three kinds of > generic parameters: > > 1. Any type. > 2. Any type with `==`. > 3. Integer constant. > > This list could be extended to include support for _any numeric type_ > (with operators like `+`, `-`, ...). This would make it possible to make > functions like `Min`, `Max`, and so on. > I've also added a better description of the scope of the identifiers declared with the gen keyword as Ian pointed out: The identifier after `gen` is then a generic type identifier visible in the > whole rest of the function (signature and body). št 30. 5. 2019 o 21:44 David Riley <fraveyd...@gmail.com> napísal(a): > On May 30, 2019, at 2:25 PM, Ian Lance Taylor <i...@golang.org> wrote: > > > > One of my guidelines for an acceptable generics proposal is that > > people can write Min and Max. Your proposal admits that it doesn't > > permit that. I think that is a problem. I'm fine with the general > > idea of "do 80% of the job" but in practice people really do want to > > write Min and Max. I think they are part of the 80% that needs to be > > handled, not the 20% that can be omitted. > > I agree strongly with this metric. My principal reason for wanting > generics is precisely so I can avoid writing the kind of repetitive code > that I currently need to write to perform the exact same simple operations > on similar datatypes. Min and Max are perfect examples of that, Map and > Filter are slightly more complex ones. > > If I can't write Min and Max for generic data types, I'm not using it. > YMMV. > > > - Dave -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAO6k0uv4RTP5kDsgNwB-KoWy8z1ErpMpVFieX%2BincRvHvHXmOw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
