However there is a trap for the unwary here. If the value you are testing may legitimately evaluate to false, your default value will be spuriously assigned.

That's solved by using the defined-or operator "//" that's new in perl 5.10. However, because it's so new it's probably not a good idea to use it yet for anything you upload to the CPAN :-)

In reply to Re^2: what is sub {1;} by DrHyde
in thread what is sub {1;} by mlgvalt

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