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.