On Sun, Jul 29, 2018 at 10:58 AM Steven D'Aprano <st...@pearwood.info> wrote:
> On Sun, Jul 29, 2018 at 06:32:19AM -0400, David Mertz wrote: > > On Sun, Jul 29, 2018, 2:00 AM Steven D'Aprano <st...@pearwood.info> > wrote: > > > > > Fine. So it takes them an extra day to learn one more operator. Big > > > deal. It is commonly believed to take ten years to master a field or > > > language. Amortize that one day over ten years and its virtually > > > nothing. > > > > > > > This is where being wrong matters. The experience in this thread of most > > supporters failing to get the semantics right shows that this isn't an > > extra day to learn. > > The difficulty one or two people had in coming up with a correct > equivalent to none-aware operators on the spur of the moment is simply > not relevant. Aside from whichever developers implements the feature, > the rest of us merely *use* it, just as we already use import, > comprehensions, yield from, operators, class inheritence, and other > features which are exceedingly difficult to emulate precisely in pure > Python code. > > Even something as simple as the regular dot attribute lookup is > difficult to emulate precisely. I doubt most people would be able to > write a pure-Python version of getattr correctly the first time. Or even > the fifth. I know I wouldn't. > > I'm sure that you are fully aware that if this proposal is accepted, > people will not need to reinvent the wheel by emulating these none-aware > operators in pure Python, so your repeated argument that (allegedly) > even the supporters can't implement it correctly is pure FUD. They won't > have to implement it, that's the point. +1 to this, though I agree with Raymond's post that perhaps a breather on language changes would be helpful until some of the recently introduced features have become more familiar to folks.
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