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kotlinlang

isn't there a function to sort in place an `IntArray` with a given comparator? I see only `sortedWith`, which returns a new sorted list

It doesn't seem to exist in stdlib at all, though I agree that it should.

this is Java functionality: You can't do it with 'primitives', but you can using an typed array:

```        val array = Array(10) { it }

        Arrays.sort(array, reverseOrder())```

Was just about to say — `IntArray` deals in primitives and Comparators deal in objects, which means there would be a _lot_ of boxing involved if such a method existed

To avoid boxing, you can use third-party primitive collection libraries (and primitive-type comparators) such as Eclipse Collections and Fastutil (both are JVM only).

isn't possible to avoid boxing with an inlined function designed explicitly for primitive arrays?

Possible if `Comparator` were replaced with a traditional lambda, but I think the sheer amount of code that would have to be inlined for an optimized sorting method would make that a poor candidate for inlining.