Elliot Shank > Perl-Critic-1.116 > Perl::Critic::Policy::ControlStructures::ProhibitDeepNests

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Module Version: 1.116   Source   Latest Release: Perl-Critic-1.123

NAME ^

Perl::Critic::Policy::ControlStructures::ProhibitDeepNests - Don't write deeply nested loops and conditionals.

AFFILIATION ^

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

DESCRIPTION ^

Deeply nested code is often hard to understand and may be a sign that it needs to be refactored. There are several good books on how to refactor code. I like Martin Fowler's "Refactoring: Improving The Design of Existing Code".

CONFIGURATION ^

The maximum number of nested control structures can be configured via a value for max_nests in a .perlcriticrc file. Each for-loop, if-else, while, and until block is counted as one nest. Postfix forms of these constructs are not counted. The default maximum is 5. Customization in a .perlcriticrc file looks like this:

    [ControlStructures::ProhibitDeepNests]
    max_nests = 3

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.

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