Discussion on: An example of why performance matters (with Python and Rust)

I totally agree with you, only a comment:

That's where 'fast enough' comes in: if it takes you a minute to read the documentation, another minute or two to mentally parse the code and 15 minutes of carefully checking your changes, and perhaps 2 days debugging to notice what is actually wrong, then what point is a 2 ms speedup for something that likely has no gain from that speedup? (Which is far too common an occurrence)

Well yes, if the speed up of the oneliner is 2ms then no, it's definitely not worth it. The only upside in your case is that you might have gain a better knowledge of the system but that's due to the 2 days of debugging, not due to the oneliner :D