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☆ Yσɠƚԋσʂ ☆@lemmy.ml to Programmer Humor@lemmy.mlEnglish · 1 个月前

Which of these javascript expressions is false?

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Which of these javascript expressions is false?

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☆ Yσɠƚԋσʂ ☆@lemmy.ml to Programmer Humor@lemmy.mlEnglish · 1 个月前
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  • davel [he/him]@lemmy.ml
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    1 个月前

    Definitionally in IEEE floating point, NaN is not equal to anything, including itself. The only real abomination here is B:

    > Math.min()
    Infinity
    > Math.max()
    -Infinity
    > 
    
    • Ephera@lemmy.ml
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      1 个月前

      I mean, B does make some amount of sense, if you realize that it’s supposed to give you the maximum among the parameters (so you’d normally call it as Math.max(5, 3) === 5).

      Well, and you can call that with zero parameters, because you can spread an array into it, which might have zero length. And then given these conditions, and if you don’t want to throw an error, then -Infinity is kind of the least bad remaining option, as it’s likely to generally work with the rest of your logic.

      • NewDark [he/him]@hexbear.net
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        1 个月前

        I love javascript. It’s so insane in such fun ways to prevent itself from throwing errors. It’s got like a naive cute charm to it ya know?

      • mathemachristian [he/him]@hexbear.net
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        1 个月前

        thats how we often do it in math. The minimum over the empty set is ∞

  • ThotDragon@lemmy.blahaj.zone
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    1 个月前

    I’m guessing C

    • ☆ Yσɠƚԋσʂ ☆@lemmy.mlOP
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      1 个月前

      yup

    • CapriciousDay@lemmy.ml
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      27 天前

      deleted by creator

  • TFed 🍉🌻@infosec.exchange
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    1 个月前

    deleted by creator

  • salmoura@lemmy.eco.br
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    1 个月前

    It can’t be anything other than B, right?

    • ☆ Yσɠƚԋσʂ ☆@lemmy.mlOP
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      1 个月前

      it’s not B

  • lowleveldata@programming.dev
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    1 个月前

    A && B && C && D

  • twice_hatch@midwest.social
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    1 个月前

    Moot! Those ALL fail code review!

  • ClathrateG [none/use name]@hexbear.net
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    1 个月前

    is D two single quotes, or one double quote?

    • ☆ Yσɠƚԋσʂ ☆@lemmy.mlOP
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      1 个月前

      I’m guessing single quotes, since a single double quote isn’t valid syntax.

      • MyNameIsRichard@lemmy.ml
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        1 个月前

        Yeah, not even JavaScript is that insane!

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