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Full Discussion: Passing arguments to Perl Function
Top Forums Shell Programming and Scripting Passing arguments to Perl Function Post 302287924 by Raynon on Monday 16th of February 2009 03:33:15 AM
Old 02-16-2009
Passing arguments to Perl Function
Hi All,

I am trying to pass an argument called "Pricelist" to a Perl function, then the function will open and print out the contents of the file named "Pricelist". But i can't seem to do it using my below code. Can any expert give some advice?

Code:
#!/usr/local/bin/perl

$DATABASE = "/home/myfile/DATABASE_DIR";

open_my_doc( "Pricelist" );

sub open_my_doc {
print "$DATABASE/$_[0]\n"; 
open(FH, "< $DATABASE/$_[0]" ) or die $!;
        while (<FH>) {
          print $_;
        };
        close FH;
};

}


Output:

Code:
/home/myfile/DATABASE_DIR

 

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LEARN ABOUT DEBIAN

perl::critic::policy::inputoutput::requirecheckedopen

Perl::Critic::Policy::InputOutput::RequireCheckedOpen(3pUser Contributed Perl DocumentatPerl::Critic::Policy::InputOutput::RequireCheckedOpen(3pm)

NAME

       Perl::Critic::Policy::InputOutput::RequireCheckedOpen - Write "my $error = open $fh, $mode, $filename;" instead of "open $fh, $mode,
       $filename;".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       The perl builtin I/O function "open" returns a false value on failure. That value should always be checked to ensure that the open was
       successful.

	   my $error = open( $filehandle, $mode, $filename );		       # ok
	   open( $filehandle, $mode, $filename ) or die "unable to open: $!";  # ok
	   open( $filehandle, $mode, $filename );			       # not ok

	   use autodie;
	   open $filehandle, $mode, $filename;				       # ok

       You can use autodie, Fatal, or Fatal::Exception to get around this.  Currently, autodie is not properly treated as a pragma; its lexical
       effects aren't taken into account.

CONFIGURATION

       This Policy is not configurable except for the standard options.

AUTHOR

       Andrew Moore <amoore@mooresystems.com>

ACKNOWLEDGMENTS

       This policy module is based heavily on policies written by Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>.

COPYRIGHT

       Copyright (c) 2007-2011 Andrew Moore.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  The full text of this license
       can be found in the LICENSE file included with this module.

perl v5.14.2							    2012-06-07		Perl::Critic::Policy::InputOutput::RequireCheckedOpen(3pm)
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