On Wed, Apr 3, 2013 at 3:25 PM, Rodrigo Barboza <rodrigombufrj@gmail.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
