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Re: What does this mean?

by linuxkid (Sexton)
on Aug 20, 2012 at 21:00 UTC ( #988510=note: print w/ replies, xml ) Need Help??

in reply to What does this mean?

if ya want it even shorter, try $self->{_id} = defined($id) ? $id : $self->{_id}


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Re^2: What does this mean?
by aaron_baugher (Curate) on Aug 20, 2012 at 22:53 UTC

    If by "shorter," you mean 14 characters longer, then absolutely.

    Aaron B.
    Available for small or large Perl jobs; see my home node.

Re^2: What does this mean?
by Anonymous Monk on Aug 21, 2012 at 07:04 UTC
    defined $id and $$self{_id} = $id; or with newer perls $$self{_id} //= $id;
      $$self{_id} //= $id; checks the definedness of $$self{_id}, not of $id (as the other suggested snippets do), so it does something completely different (never reset the attribute, instead of prevent assignment of an undefined id).

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