Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight
 
PerlMonks  

Re: my $x or my ($x)

by rinceWind (Monsignor)
on Apr 04, 2006 at 14:26 UTC ( #541151=note: print w/ replies, xml ) Need Help??


in reply to my $x or my ($x)

Another useful use of list context is with regular expression captures. Consider:

my $x = /(\w+)/;

and

my ($x) = /(\w+)/;

The first example will set $x to 1 if $_ contains any alphanumerics. The second example sets $x to the first word.

The second, list context, example is such a common, natural idiom to me that I never make the mistake of using captures in scalar context. I also almost never need to use $1, $2 etc. explicitly.

--

Oh Lord, won’t you burn me a Knoppix CD ?
My friends all rate Windows, I must disagree.
Your powers of persuasion will set them all free,
So oh Lord, won’t you burn me a Knoppix CD ?
(Missquoting Janis Joplin)

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://541151]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others scrutinizing the Monastery: (6)
As of 2016-06-27 06:28 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    My preferred method of making French fries (chips) is in a ...











    Results (336 votes). Check out past polls.