Using isa:

if (UNIVERSAL::isa($ref, 'Foo::Bar')) {
   #...
} elsif (UNIVERSAL::isa($ref, 'Baz::Quux')) {
   #...
}

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DWIM is Perl's answer to Gödel

In reply to Re: Question about creating intelligent behaviors in modules WRT external objects/modules by GrandFather
in thread Question about creating intelligent behaviors in modules WRT external objects/modules by atcroft

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