On Thu, Aug 6, 2020 at 12:11 PM Axel Wagner <axel.wagner...@googlemail.com> wrote: > > On Thu, Aug 6, 2020 at 8:53 PM Ian Lance Taylor <i...@golang.org> wrote: >> >> My point wasn't that a string is a number. My point was that the >> current design draft permits writing a function that uses + and works >> with both strings and numbers. > > > Is there a need for that? I can't really imagine one.
Probably not. But every exception is in itself a piece of complexity that people have to learn. As a general guideline, the fewer exceptions, the better. > That being said, in general I agree with you that type-lists allow you to be > more deliberate about the semantics of the operators. > I would actually come from the other direction and say that both `string` and > `int` have `+`, but both have clearly different meanings. And even `uint`, > `int` and `float64` have subtle differences in how `+` works (for example: > `float64` can have `a+b==a && b != 0`). > So, given that `+` has different meanings for different types, listing them > explicitly gives more control over the behavior you intend. Makes sense. Thanks. 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/CAOyqgcV18H4i4Cr1ey0rv1KwhpvAErrkTovZ7Nm7tafkp1qXWA%40mail.gmail.com.
