11-30-2001
Good Perl Book
For learning Perl I really liked "Mastering Perl 5" by Eric C. Herrmann. It covers Perl development on both Win32 and *Nix platforms.
The real plus is that I got this book for a whoppin' $5 at the local 75% Off Books (in Plano, Texas).
I normally use Perl for more involved routines and awk and sed for more "Quick and Dirty" bits.
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LEARN ABOUT CENTOS
perl::critic::policy::controlstructures::prohibituntilblocks
Perl::Critic::Policy::ControlStructures::ProhibitUntilBlUser(Contributed Perl DocumPerl::Critic::Policy::ControlStructures::ProhibitUntilBlocks(3)
NAME
Perl::Critic::Policy::ControlStructures::ProhibitUntilBlocks - Write "while(! $condition)" instead of "until($condition)".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Conway discourages using "until" because it leads to double-negatives that are hard to understand. Instead, reverse the logic and use
"while".
until($condition) { do_something() } #not ok
until(! $no_flag) { do_something() } #really bad
while( ! $condition) { do_something() } #ok
This Policy only covers the block-form of "until". For the postfix variety, see "ProhibitPostfixControls".
CONFIGURATION
This Policy is not configurable except for the standard options.
SEE ALSO
Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls
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::ControlStructures::ProhibitUntilBlocks(3)