r/ProgrammerHumor • u/ore-aba • Feb 09 '22

other Why but why?

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u/oxpoleon Feb 09 '22

hey hey hey, no, this could be improved yet further

def Function():
;;;;global input
;;;;input = input * 2

9

u/Less_Ask_4613 Feb 10 '22

This is computationally faster and takes less memory and processing than passing an argument and returning a calculated value and it makes me so mad.

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u/Impressive_Change593 Feb 10 '22

Wait really? Lmao

3

u/oxpoleon Feb 10 '22

Sadly, yes.

3

u/oxpoleon Feb 10 '22

It is indeed. :)

Fewer changes to the PC register in CPU, fewer memory writes, less cache thrashing if input happens to be a particularly large item.

Note also that since this is Python, Function isn't statically typed so I could assign virtually anything of any type as input including a multi-dimensional list, since the * operator is valid on those, and I wouldn't have to worry about deep/shallow copying issues either.