| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Rodrigo Barboza <rodrigombufrj(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: c language functions |
| Date: | 2013-04-03 21:17:39 |
| Message-ID: | CA+TgmoZjyyeR2uq=bFOjtAZpZ3_v83+ot64K_whWNTG=s8LfwQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Apr 3, 2013 at 3:25 PM, Rodrigo Barboza <rodrigombufrj(at)gmail(dot)com> wrote:
> Well, I was checking inside my function the type of the second argument and
> switching between the allowed types.
> This way kind of does the same thing of many functions, doesn't it?
Sure, except that it will also call your function when someone does
my_int + text or my_int + bytea or my_int + box, which are surely a
lot less sensible. It's probably a good idea to assume that if you
make your type work like the existing types, it's more likely to end
well than if you make it behave completely differently.
...Robert
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