Programming Horror

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Welcome to Programming Horror!

This is a place to share strange or terrible code you come across.

For more general memes about programming there's also Programmer Humor.

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submitted 11 months ago* (last edited 11 months ago) by andioop@programming.dev to c/programming_horror@programming.dev

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[–] mac@programming.dev 19 points 11 months ago* (last edited 11 months ago) (2 children)

who needs modulo when you can get less characters out of

while (number > 1) {
  number -= 2;
}
return number;

very efficient

edit: or theres the trusty iseven api

[–] nullPointer@programming.dev 8 points 11 months ago (1 children)

here is somewhat less:

return (number % 2) == 0;

[–] pivot_root@lemmy.world 10 points 11 months ago (1 children)

return !(number & 1);

[–] venoft@lemmy.world 8 points 11 months ago* (last edited 11 months ago) (1 children)

This is the way. Modulo takes too long to compute, bitwise compare should be a lot faster.

return !(number &amp; 0x1);

[–] recursive_recursion@programming.dev 5 points 11 months ago* (last edited 11 months ago)

oh shit yo

this comment chain is pretty awesome, I learned a lot from this thanks!

[–] perviouslyiner@lemm.ee 2 points 11 months ago (1 children)

are the negative numbers all even?

[–] I_am_10_squirrels@beehaw.org 2 points 11 months ago

Yes