Re: array support patch phase 1 patch

Joe Conway wrote:
> Attached is an updated version of the doc patch along with the addition
> of two new functions, as previously discussed:
>
> - str_to_array(str TEXT, delim TEXT) returns TEXT[]
> - array_to_str(array ANYARRAY, delim TEXT) returns TEXT
>
> The patch is fairly large because:
>
> 1. the documentation part of it is large
> 2. I moved some static functions around and made them accessible so
> that I could use them in implementing the two functions.
>
> It passes all regression tests, and as mentioned above includes
> documentation.
>
> If there are no objections, please apply.

The attached is an update to the one above, with the following additions
(recommended by Tom here -
http://archives.postgresql.org/pgsql-patches/2003-04/msg00030.php)

1. array_eq() now applies the element type's equality operator on an
element-by-element basis.
2. applied Tom's cache lookup results caching technique in arrayfuncs.c,
array_userfuncs.c, and in the new functions in varlena.c.

Still passes all regression tests. No additional doc updates needed for
this one. If there are no objections, please apply.

Thanks,

Joe