On Wed, Dec 1, 2021 at 10:12 AM Chris Angelico <ros...@gmail.com> wrote:
> On Thu, Dec 2, 2021 at 12:42 AM David Mertz, Ph.D.
> <david.me...@gmail.com> wrote:
> >> 4) If "no" to question 1, is there some other spelling or other small
> >> change that WOULD mean you would use it? (Some examples in the PEP.)
> >
> > Yes, the delay/later/defer keyword approach is not confusing, and does
> not preempt a later feature that would actually be worth having.
>
> Do you mean changing the spelling of the existing proposal, or a
> completely different proposal for deferred objects that are actually
> objects? Because that is NOT what I mean by a "small change". :)
>
The spelling of the existing proposal. I.e. if the proposal were:
def fun(things: list[int] = defer []) -> int:
# ... some implementation
I'd be -0 on the idea rather than -100.
Yes, my change in attitude is largely because I want *some future PEP* to
address the more general situation like:
result = defer really_expensive_calculation()
if predicate:
doubled = result * 2
But I do not think your PEP does (nor even should) include that potential
future behavior/syntax. Such a hypothetical future PEP would have a
continuity with the syntax of your feature, albeit DEFINITELY need to
address many independent concerns/issues that yours does not create.
However, even if I assume the mythical future PEP never happens, in terms
of readability, a WORD is vastly less confusing than a combination of
punctuation that has no obvious or natural interpretation like '=>'. Or
rather, I think that spelling is kinda-sorta obvious for the lambda
meaning, and the use you want is kinda-sorta similar to a lambda. So I
*do* understand how you get there... but it still seems like much too much
line noise for a very minimal need.
--
Keeping medicines from the bloodstreams of the sick; food
from the bellies of the hungry; books from the hands of the
uneducated; technology from the underdeveloped; and putting
advocates of freedom in prisons. Intellectual property is
to the 21st century what the slave trade was to the 16th.
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