11-04-2012
The code you've provided does what it's supposed to do.
First of all, you are opening the file myfile, reading it completely and then closing the associated filehandle, once for each line in the file dummy_file.
For every line from dummy_file in which the 2nd field $F[1] (split on white-space using the -a run-time switch) matches the pattern patt anchored at the end, the first element of the list slice (split(" ", $i))[0], obtained by splitting the line from myfile on white-space, is displayed.
What exactly are you trying to do? Please elaborate with input and output samples.
Last edited by elixir_sinari; 11-05-2012 at 12:21 AM..
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LEARN ABOUT DEBIAN
perl::critic::policy::builtinfunctions::requireblockmap
Perl::Critic::Policy::BuiltinFunctions::RequireBlockMap(User Contributed Perl DocumentPerl::Critic::Policy::BuiltinFunctions::RequireBlockMap(3pm)
NAME
Perl::Critic::Policy::BuiltinFunctions::RequireBlockMap - Write "map { $_ =~ /$pattern/ } @list" instead of "map /$pattern/, @list".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
The expression forms of "grep" and "map" are awkward and hard to read. Use the block forms instead.
@matches = grep /pattern/, @list; #not ok
@matches = grep { /pattern/ } @list; #ok
@mapped = map transform($_), @list; #not ok
@mapped = map { transform($_) } @list; #ok
CONFIGURATION
This Policy is not configurable except for the standard options.
SEE ALSO
Perl::Critic::Policy::BuiltinFunctions::ProhibitStringyEval
Perl::Critic::Policy::BuiltinFunctions::RequireBlockGrep
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. 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::BuiltinFunctions::RequireBlockMap(3pm)