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Full Discussion: sort/uniq
Top Forums UNIX for Dummies Questions & Answers sort/uniq Post 30118 by jimmyflip on Thursday 17th of October 2002 04:22:02 AM
Old 10-17-2002
sort/uniq

I have a file:

Fred
Fred
Fred
Jim
Fred
Jim
Jim

If sort is executed on the listed file, shouldn't the output be?:

Fred
Fred
Fred
Fred
Jim
Jim
Jim

Then if uniq is executed on the sorted file, shouldn't the output be:

4 Fred
3 Jim

I can't get it to work. Any help on this would be appreciated. Thanks.
jimmyflip
 

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Perl::Critic::Policy::BuiltinFunctions::ProhibitStringySUser(Contributed Perl DocumPerl::Critic::Policy::BuiltinFunctions::ProhibitStringySplit(3)

NAME
Perl::Critic::Policy::BuiltinFunctions::ProhibitStringySplit - Write "split /-/, $string" instead of "split '-', $string". AFFILIATION
This Policy is part of the core Perl::Critic distribution. DESCRIPTION
The "split" function always interprets the PATTERN argument as a regular expression, even if you specify it as a string. This causes much confusion if the string contains regex metacharacters. So for clarity, always express the PATTERN argument as a regex. $string = 'Fred|Barney'; @names = split '|', $string; #not ok, is ('F', 'r', 'e', 'd', '|', 'B', 'a' ...) @names = split m/[|]/, $string; #ok, is ('Fred', Barney') When the PATTERN is a single space the "split" function has special behavior, so Perl::Critic forgives that usage. See "perldoc -f split" for more information. CONFIGURATION
This Policy is not configurable except for the standard options. SEE ALSO
Perl::Critic::Policy::ControlStrucutres::RequireBlockGrep Perl::Critic::Policy::ControlStrucutres::RequireBlockMap 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 v5.16.3 2014-06-09 Perl::Critic::Policy::BuiltinFunctions::ProhibitStringySplit(3)
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