Interesting use of exceptions.
Indeed although generally it's usually a bad idea to misappropriate the exception throwing / handling mechanism for other purposes, as it's probably be less well optimised, performance-wise, than other parts of a VM.
Tail recursion in Python
11–20 of 87 posts
Re: Tail recursion in Python
#12Interesting use of exceptions.
Indeed although generally it's usually a bad idea to misappropriate the exception throwing / handling mechanism for other purposes, as it's probably be less well optimised, performance-wise, than other parts of a VM.
not in python. exceptions for flow control are not looked down upon unless it’s gratuitous usage. many frameworks do exactly this.
Re: Tail recursion in Python
#13Code snippets you won't see if you have JS disabled: https://gist.github.com/ChrisPenner/c0b3f4feb054daa2f6370d2e... https://gist.github.com/ChrisPenner/c958afbf6e7a763c188d8b83...
JS fully disabled in this day and age?
Re: Tail recursion in Python
#14Re: Tail recursion in Python
#15Someone recently pointed out to me you can bypass the recursion limit with an inbuilt decorator, because it's basically a memoiser.
lru_cache, from the functools library.
The example given in the docs [0] is:
import functools
@functools.lru_cache(maxsize=None)
def fib(n):
if n Re: Tail recursion in Python
#16Earlier quoted context omitted.
Indeed although generally it's usually a bad idea to misappropriate the exception throwing / handling mechanism for other purposes, as it's probably be less well optimised, performance-wise, than other parts of a VM.
not in python. exceptions for flow control are not looked down upon unless it’s gratuitous usage. many frameworks do exactly this.
Even the language itself does this: if a generator that is being processed by a for loop returns (rather than yield), the language will raise a StopIteration exception, which the for loop with catch and use as a signal that it should exit.
Re: Tail recursion in Python
#17You can also do this by rewriting functions with a decorator.
Re: Tail recursion in Python
#18Re: Tail recursion in Python
#19Earlier quoted context omitted.
Indeed although generally it's usually a bad idea to misappropriate the exception throwing / handling mechanism for other purposes, as it's probably be less well optimised, performance-wise, than other parts of a VM.
not in python. exceptions for flow control are not looked down upon unless it’s gratuitous usage. many frameworks do exactly this.
Yes! the more I dive into general py libraries the more I see `try: import pylib2 except: pylib2 = None` etc,