Perhaps something like this?

package My::Interface::VersionBased;

sub new {
    if ($some_condition) {
        return My::Interface::VersionBased::ForCondition1->new(@_);
    }
    elsif ($some_other_condition) {
        require My::External::Interface;
        return My::External::Interface->new( @_ );
    }
    else {
        die "Unable to find a proper interface";
    }
}

[download]

--MidLifeXis

In reply to Re: The "right" way to make your script run with old versions of perl by MidLifeXis
in thread The "right" way to make your script run with old versions of perl by xorl

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