Idea: swap with multiple arguments

[Piotr Szturmaj via Digitalmars-d]

On 2016-05-24 02:16, H. S. Teoh via Digitalmars-d wrote:
> On Mon, May 23, 2016 at 04:01:08PM -0400, Andrei Alexandrescu via Digitalmars-d wrote:
>> So swap(a, b) swaps the contents of a and b. This could be easily
>> generalized to multiple arguments such that swap(a1, a2, ..., an)
>> arranges things such that a1 gets an, a2 gets a1, a3 gets a2, etc. I
>> do know applications for three arguments. Thoughts? -- Andrei
>
> As others have said, 'swap' is a horrible name for this. I'd go with
> 'rotate', but then there's the question of which direction it rotates.
> Conceivably, it's equally valid for an to get a1, a1 to get a2, etc..
> So 'rotateRight' would be most unambiguous, though a handful to type.

I would do it as rotate(RandomAccessRange, ptrdiff_t shift).

shift >= 1 means rotate right by amount of shift
shift <= -1 means rotate left
shift == 0 does nothing

This way it's more general, it's possible to rotate by any amount, left 
or right.