Programmer Humor

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Peak code reuse (eviltoast.org)

submitted 3 days ago by orhtej2@eviltoast.org to c/programmer_humor@programming.dev

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[–] FiskFisk33@startrek.website 6 points 2 days ago* (last edited 2 days ago) (1 children)

isEven(0) ->
    true;
isEven(Num) ->
    isOdd(Num-1).
isOdd(0) ->
    false;
isOdd(Num) ->
    isEven(Num-1).

[–] Knock_Knock_Lemmy_In@lemmy.world 3 points 2 days ago* (last edited 2 days ago) (1 children)

Hmm.

isEven(-2)...<out of stack error>

[–] killingspark@feddit.org 3 points 2 days ago

Nah, tail recursion optimization can just reuse the same stack frame again and again. It's going to loop until it wraps around what ever integer width it has and then tells you if the biggest integer is even or odd. Or, if it's nice, it's going to complain about the wrap around