SPUG: re-size array

[michaelrwolf at att.net]

> %hash = @array;
> 
> @even = keys %hash;
> @odd  = values %hash;

Tricky!  I like it.

But beware.  It only works if you don't care about the ordering of the @even or @odd arrays.  If you merely need to consider them as sets (collections), this will work.  Otherwise, the ordering has been lost by creating a hash out of it.

It'll probably take a not-so-insignificant amount of time/CPU to build that hash.