Re: Constant attributes

On 5/21/08, Bernardo Rechea <[email protected]> wrote:

Hi Bernardo,

> I wanted a constant attribute, i.e., one that is read-only and not settable
>  at construction time.

Does it have to be a full attribute? It could just be a method that
returns a constant. I often have this in my classes:

package Parent;
use constant needs_trinket => 0;

package Child;
use constant needs_trinket => 1;

Otherwise, if you need a full attribute, you could use:

has needs_trinket => (
    init_arg => undef, # I think this works...
    is => 'ro',
    default => 0,
);

>  Bernardo

Shawn