It may be silly, but it seems that constants should come along with a base class just like methods. Consequently, I would like to access a superclass' constants without having to "use" a second file.

I looked at this question, but it doesn't float my boat. I guess if that's what exporter and constant are doing behind the scenes, it would be OK, but it is certainly non-intuitive.

So, what is the right way to inherit constants from a super-superclass?

Something along the lines of this:

# Foo/Constants.pm
package Foo::Constants;

use constant PI => 3;


# Foo/Base.pm
package Foo::Base;

use Foo::Constants;


# Foo/Sub.pm
package Foo::Sub;

use base "Foo::Base";


# Bar/Sub.pm
package Bar::Sub;

use base "Foo::Sub";

use strict;

sub new {
        print PI;                 #fails, this is the one I want
        print Bar::Sub::PI;       #fails
        print Foo::Sub::PI;       #fails
        print Foo::Base::PI;      #fails
        print Foo::Constants::PI  #even this fails
}

[download]

Of course, I could could "use Foo::Constants" in all those files, but, ideally, I would like to have a subclass of Foo::Constants (e.g. Bar::Constants) that would export even more things without having to re-export everything in it's superclass.

Thanks!

In reply to Any way to inherit constants? by Anonymous Monk

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