On Sat, Aug 8, 2020, 1:12 AM Steven D'Aprano
> Static languages often check what
> bounds they can at compile time, and optionally insert bound checking
> runtime code for ambiguous places.
Yep. That's an assert, or it's moral equivalent.
Here's a deterministic program using the hypothetical new feature.
def plusone(i: int[1:1_000_000_000]):
return i+1
random.seed(42)
for n in range(1_000_000):
random.randint(1, 1_000_000_001)
Is this program type safe? Tell me by static analysis of Mersenne Twister.
Or if you want to special case the arguments to randint, will, lots of
things. Let's say a "random" walk on the integer number line where each
time through the loop increments or decrements some (deterministic but hard
to calculate) amount. After N steps are we within certain bounds?
_______________________________________________
Python-ideas mailing list -- [email protected]
To unsubscribe send an email to [email protected]
https://mail.python.org/mailman3/lists/python-ideas.python.org/
Message archived at
https://mail.python.org/archives/list/[email protected]/message/BUV7DSKL5NA3XX3V4WSD4BII5OI5ZZWC/
Code of Conduct: http://python.org/psf/codeofconduct/
