UNIVERSAL::can() is not designed for checking if a class is loaded. This bug report may shed some light on the matter.

If you just need to check if a module has been loaded, then check %INC (see perlvar). If you care about the subtle difference between modules and packages, try is_class_loaded from Class::Load.

package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name

In reply to Re: Question about UNIVERSAL::can by tobyink
in thread Question about UNIVERSAL::can by schetchik

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