Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

Re^6: write and read the same file not display the output

by Kenosis (Priest)
on Sep 05, 2012 at 04:53 UTC ( #991736=note: print w/replies, xml ) Need Help??


in reply to Re^5: write and read the same file not display the output
in thread write and read the same file not display the output

$1 is initialized via regex captures which use parentheses. For example, in the following:

my $string = 'Frank'; my $name = 'Frank'; print $1 if $string =~ /^$name$/; print $1 if $string =~ /^($name)$/;

The first print statement produces:

Use of uninitialized value $1 in...

Whereas, the second print shows the value in $1:

Frank

Replies are listed 'Best First'.
Re^7: write and read the same file not display the output
by Rudolf (Pilgrim) on Sep 05, 2012 at 13:09 UTC

    ahh I see, thats valuable information I lost along the way haha thank you for taking the time to explain. Enjoy your week! -Rudolf

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://991736]
help
Chatterbox?
[stevieb]: daughter arrived from SF with Gandalf the bunny for his first international flight. Very wonderful Friday... like the holidays came early :)

How do I use this? | Other CB clients
Other Users?
Others surveying the Monastery: (3)
As of 2016-12-03 04:44 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    On a regular basis, I'm most likely to spy upon:













    Results (52 votes). Check out past polls.