Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

Re: unwanted ARGV in subroutine

by choroba (Canon)
on Oct 29, 2012 at 21:48 UTC ( #1001428=note: print w/ replies, xml ) Need Help??


in reply to unwanted ARGV in subroutine

my $text = do { local( @ARGV, $/ ) = $infile ; <> } ;
This should locally change @ARGV to contain $infile and load the whole file into $text. Maybe the file is huge and you have just to wait a bit?
لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ


Comment on Re: unwanted ARGV in subroutine
Download Code
Replies are listed 'Best First'.
Re^2: unwanted ARGV in subroutine
by runrig (Abbot) on Oct 29, 2012 at 22:19 UTC
    And if the file is huge, the OP shouldn't be loading it into memory, and should write to a temp file, and then rename it at the end.

      Hi rizzler

      Try this

      sub addheader{ my($infile,$header)=@_; open(FILE, "$infile"); my $text=do {local $/; <FILE>}; close FILE; open(FILE,">$infile"); print FILE $header; print FILE $text; close FILE; }
        Please don't try that :) it doesn't use error checking ... If you want to copy a file use File::Copy, for moving File::Move

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1001428]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others browsing the Monastery: (16)
As of 2015-07-30 16:41 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (273 votes), past polls