[OT] best way to determine existence of a function in a package

[Jonathan Stowe]

On Mon, 2007-11-19 at 09:53 +0000, Dirk Koopman wrote:
> The problem:
> 
> A user may include a local version of a package which may include one or 
>   more local versions of a static function (there are no references, 
> blessed or otherwise to ->can() on).
> 
> I want to detect whether or not that function is explicitly defined.
> 
> if (defined *Local::function) {
>     ...
>     ...
> }
> 
> except that expression always returns true, which is rather a nuisance.

You cant to examine the CODE slot of the typeglob:

if (defined *Local::function{CODE} )
{
   # ....
}

This may not work on ye ancieunte perls, but I can't remember when it
was introduced.

/J\