On Mon, Jun 22, 2020 at 1:41 PM Ankur Agarwal <akah...@gmail.com> wrote: > > I like the idea of generics, and having played around with them it definitely > feels worth bringing into Golang. But, I agree with the author of this post > and I don't think constraints on generics is needed. > > I do understand the arguments that: > 1. There's no implicit conversion between a value type and an interface, and > constraints would make this possible, but i feel that it's at the expense of > making the language unnecessarily complicated. Can we not just think through > our design of our applications to either prevent this need or ensure that we > build a slice of interfaces? > 2. Being able to constrain on comparable values (using <,>,==,!=). Couldn't > we create an interface which declares what we need (LessThan, MoreThan, etc)? > I feel that if the language goes down this path, why not do the whole shebang > and have operator overloading in go? > > I've yet to really feel the need for either of these (although i'm not a > veteran golang dev -- only 1 year with golang in a professional environment), > but I have come across scenarios where generics would otherwise be useful... > (and function overloading, but that's a whole different kettle of fish) > > It's great that we've been given the chance to give some feedback :)
I'm sorry, I'm not sure quite what you are saying. The reason for constraints is to create a contract between the generic function and its caller, so that far away code doesn't break unexpectedly. See https://go.googlesource.com/proposal/+/refs/heads/master/design/go2draft-type-parameters.md#constraints . Are you talking about type lists, rather than constraints? Ian -- 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/CAOyqgcXfn3fpbQ5RXhB0f6EaYgyZbphtod24G%3DjxtzfEuF9SEA%40mail.gmail.com.
