On 04/28/2012 01:28 PM, Shawn H Corey wrote:
On 12-04-28 12:36 PM, Uri Guttman wrote:
that reduces to just:
my $host = $mail_field || 'localhost' ;
which is the classic defaulting style. it has one flaw, it makes '' and
0 not allowed for values in $mail_field. but i doubt those would ever be
good host names so it should be fine here. you can switch the || to //
as someone said to get defined semantics in recent perls.
i am surprised not to have seen this classic idiom mentioned in the
thread so far.
Because the OP was calling it $xtra, which could be anything. Once he
switched to $mail_field, it became clear that is cannot contain any
variation of false, not just undef. Moral of the story: use meaningful
variable names.
good point. i skimmed most of this thread until the last few posts. i
always teach the importance of good name choices. it is the most
important aspect of coding for humans (computers don't care much about
names :).
uri
--
To unsubscribe, e-mail: beginners-unsubscr...@perl.org
For additional commands, e-mail: beginners-h...@perl.org
http://learn.perl.org/
