Re: array_reverse()

On Mon, Nov 02, 2009 at 09:20:38AM -0500, Tom Lane wrote:
> Craig Ringer <craig(at)postnewspapers(dot)com(dot)au> writes:
> > Before I go ahead and try to write a decent quality version: is there
> > any chance an array_reverse() function (in C) would be accepted into Pg
> > mainline?
>
> What would it mean for a multi-dimensional array?

Rotating the array by 180 degrees in every dimension would give the same
answer for 1-dimensional arrays and give sensible answers for higher
dimensional arrays. For example:

1,2,3 == 3,2,1

[1 2 3 [9 8 7
4 5 6 == 6 5 4
7 8 9] 3 2 1]

I think higher dimensionality would work, it's just a bit fiddly to
draw.

--
Sam http://samason.me.uk/