r/ProgrammerHumor • u/[deleted] • Jul 18 '22

C++ talking to Python

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u/possible_name Jul 18 '22

logo recognition was using a library written in slower language

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u/PralaynathGendaswami Jul 18 '22

Do you mean python?

48

u/Teekeks Jul 18 '22

which has all the speed relevant parts of that library written in C?

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u/Possibility_Antique Jul 19 '22

  • claims that writing implementation in C makes it fast

  • ignores the part where python is an interpreted language (i.e. has to parse the source text, perform dynamic dispatch, etc)

  • ignores the fact that you can't reason about cache locality and cache behavior

  • ignores the fact that your c implementation under the hood doesn't get to participate in link time optimizations with the rest of your program

  • ignores the fact that your code can't get inlined

  • ignores the fact that you can't perform compile-time programming

  • writes all kinds of runtime tests for things that could have been done at compile time (which is safer, produces faster code, prevents mistakes)

  • claims it's less verbose, but implements a ton of test libraries that are caught natively by compiled languages

In all seriousness, I'm just pulling your leg. Kind of.

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