[Israel.pm] FW: newbie question
avishalom at gmail.com
Thu Jan 15 05:30:58 PST 2009
i don't mean to seem rude, i often have very basic questions myself.
1 - perldoc -f defined ,
or just write a very short piece of code testing the differences.
will get you an answer quicker than emailing.
2 - if (@a) is evaluated in scalar context returning the number of
elements. therefore 0
2009/1/15 Chanan Berler <chananb at centerity.com>:
> Hi All,
> I am wondering if there is a difference between:
> The last one I believe I know the answer, empty string still defined, but I
> sure wanna clear view..:-)
> PS: will use strict / warning will make a difference ?
> do_somthing if ($legend);
> do_something if (defined($legend));
> do_something if ($legend == "");
> another question:
> is there a difference between
> @arr = ();
> Since both of them showed nothing when trying to do this:
> print "Yea" if (@arr);
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