81–90 of 165 posts
There's one card face missing. That's the back! A nice card back might be a more difficult challenge to do in HTML5.
I had the same thought. You could practice magic tricks if you could flip over the deck and then shuffle and fan it! "Pick a card, any card!"
It would be difficult to practice sleight of hand.
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Yes, but it is 18% faster do run the bitwise or on my machine: https://jsperf.com/or-vs-floor/2
i/13|undefined works too
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Why not just i % 4?
that would alternate the suit for each card, and all the aces would be the same suit, etc.
4 and 13 are relatively prime, so each number between 1 and 52 can be uniquely represented by the function (x) -> (x%13, x%4).
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Yes, but it is 18% faster do run the bitwise or on my machine: https://jsperf.com/or-vs-floor/2
Its because they don't do the same thing Math.floor() favors the number equal to/less than the parameter, Math.floor(-15.5) is -16 while (-15.5 | 0) is -15 Also because the returned value is int32[0], Math.floor(2147483648.5) is 2147483648 while (2147483648.5 | 0) is -2147483648 You are fine if you know the input is less than (2^31) + 1 and you want to truncate, rather than floor. [0]: http://www.ecma-international.o…
https://developer.mozilla.org/pt-PT/docs/Web/JavaScript/Refe...
What is it with cards that everything about them is so satisfying?
Maybe it's a weird takeaway, but this line is really clever: var suit = i / 13 | 0; That's such a clean way to get a 0, 1, 2 or 3 from each card's `i` and I never would have thought of it.
~~(i/13)Earlier quoted context omitted.
Its because they don't do the same thing Math.floor() favors the number equal to/less than the parameter, Math.floor(-15.5) is -16 while (-15.5 | 0) is -15 Also because the returned value is int32[0], Math.floor(2147483648.5) is 2147483648 while (2147483648.5 | 0) is -2147483648 You are fine if you know the input is less than (2^31) + 1 and you want to truncate, rather than floor. [0]: http://www.ecma-international.o…
Hmm, pretty sure floor rounds a number downward to its nearest integer. So Math.floor(-15.5) would be 15. https://developer.mozilla.org/pt-PT/docs/Web/JavaScript/Refe...