Re: [HACKERS] array questions still stands

Okay, I suppose more obviously i've just got an array of integers (by
value) @ ARR_DATA_PTR(array), so I don't have much to worry about.

On Sun, 25 January 1998, at 11:10:21, Brett McCormick wrote:

> silly me, it turned out the function had two arguments, and the second
> argument just happened to coincide with the type of the array.
>
> When writing a c function to be dynamically loaded and called from
> postgres, how do you find out the base element type of an array that
> you're accepting as an arugment (getting called with). array_in/out
> seem to get passed this value, wheras my function just gets the
> pointer without knowing what the underlying data is. do I have to
> look this up once inside the function? or, if I know what I'm
> getting, can I fudge it? (i.e. treat them as what I expect them to be
> (int4s) without regard for what they actually are). that doesn't
> sound so good to me.
>
> I'd appreciate any help!
>
> --brett