News for hackers. Stuff that matters.

A comment on A function decorator that rewrites the bytecode to enable goto in Python. Parent comment

Re:A function decorator that rewrites the bytecode to enable... by withinboredom on Tuesday September 21, 2021 @05:26AM (#28603336)
If (failed) goto retry;

Is much more elegant than a loop, or at least easier to read since you only need to really pay attention to the happy path.

[ Parent | on HN ]
Re:A function decorator that rewrites the bytecode to enable... by framecowbird on Tuesday September 21, 2021 @06:53AM (#28603750)
But you can also do that with recursion

if failed: do_thing()

This is covered in the Julia docs, where they argue recursion is more readable than goto

https://sodocumentation.net/julia-lang/topic/5564/-goto-and-...

[ Parent | on HN ]
Re:A function decorator that rewrites the bytecode to enable... by withinboredom on Tuesday September 21, 2021 @06:56AM (#28603758)
I guess that depends on if the language supports tail recursion and/or you're 100% sure it won't blow the stack. If you need to retry forever, without using any memory to do so, goto is perfect.
[ Parent | on HN ]