Ask HN: What is the most beautiful piece of code you've ever read?

Re:Ask HN: What is the most beautiful piece of code you've e... by superfrank on Monday October 28, 2019 @12:44AM (#21374342)

Personally I like this one, although it only works for an array of primitive types.

    const unique = [...new Set(arr)];

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Re:Ask HN: What is the most beautiful piece of code you've e... by _bxg1 on Monday October 28, 2019 @12:45AM (#21374354)

The other advantage of the filter one is it can be stuck in the middle of a bunch of other list operations - map(), sort(), slice(), other filters(). Also, you can use findIndex() instead of indexOf() to match any arbitrary predicate, instead of exact equivalence.

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Re:Ask HN: What is the most beautiful piece of code you've e... by superfrank on Monday October 28, 2019 @12:49AM (#21374369)

Oh, for sure. I know .filter() has it's place, so if you need anything beyond making the array unique, I'd definitely use your solution.

The one I posted just blew my mind a little the first time I saw it, so I love to share it. I guess I never really considered spreading a set.

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