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A comment on Math.min(Math.max(num, min), max).

Re:Math.min(Math.max(num, min), max) by throwawaw on Thursday August 20, 2020 @11:18AM (#24224148)
Fun seeing that pretty much everyone else finds that idiom confusing too. Half-serious, over breakfast:

    (case [(> n min) (< n max)]
      [true true] n
      [true false] max
      [false true] min)
(Side note: Clojure's `>` and `<` are kind of unreadable to begin with. Turning `if (> n min)` into "if n is greater than min" takes some work for me, still, after more than a year.)
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Re:Math.min(Math.max(num, min), max) by retzkek on Thursday August 20, 2020 @12:09PM (#24224729)
However, prefix notation becomes much easier to read and reason about when you have more than two things to compare:

    (> 3 2 1 ...)
vs

    (3 > 2) && (2 > 1) && ...
[ Parent | on HN ]
Re:Math.min(Math.max(num, min), max) by kickopotomus on Thursday August 20, 2020 @12:21PM (#24224857)
Alternatively, since min and max are part of clojure.core:

   (-> n
       (max vmin)
       (min vmax))
[ Parent | on HN ]
Re:Math.min(Math.max(num, min), max) by LandR on Thursday August 20, 2020 @08:08PM (#24230467)
> (Side note: Clojure's `>` and `<` are kind of unreadable to begin with.

I felt the same for awhile but now I just mentally put the operator between the operands, so (> 3 2) is the same as 3 > 2.

[ Parent | on HN ]
Re:Math.min(Math.max(num, min), max) by white-flame on Thursday August 20, 2020 @01:28PM (#24225896)
What about the [false false] case where min ≥ n ≥ max?
[ Parent | on HN ]