Perl::Critic::Policy::ControlStructures::ProhibitDeepNests3pm
Don't write deeply nested loops and conditionals.
Affiliation
This Policy is part of the core Perl::Critic distribution.
Overview
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
Releases
10 releases since Debian 5.0 (Lenny); the text changed 9 times.