namespace::clean - Keep imports out of your namespace
0.01
package Foo; use warnings; use strict; use Carp qw(croak); # will be removed sub bar { 23 } # will be removed use namespace::clean; sub baz { bar() } # still defined, 'bar' still bound ### Will print: # No # No # Yes print +(__PACKAGE__->can('croak') ? 'Yes' : 'No'), "\n"; print +(__PACKAGE__->can('bar') ? 'Yes' : 'No'), "\n"; print +(__PACKAGE__->can('baz') ? 'Yes' : 'No'), "\n"; 1;
When you define a function, or import one, into a Perl package, it will naturally also be available as a method. This does not per se cause problems, but it can complicate subclassing and, for example, plugin classes that are included by loading them as base classes.
The namespace::clean pragma will remove all previously declared or imported symbols at the end of the current package's compile cycle. This means that functions are already bound by their name, and calls to them still work. But they will not be available as methods on your class or instances.
namespace::clean
You shouldn't need to call any of these. Just use the package at the appropriate place.
use
Makes a snapshot of the current defined functions and registers a Filter::EOF cleanup routine to remove those symbols from the package at the end of the compile-time.
Takes a class as argument and returns all currently defined functions in it as a hash reference with the function name as key and a typeglob reference to the symbol as value.
Filter::EOF
Robert 'phaylon' Sedlacek <rs@474.at>, with many thanks to Matt S Trout for the inspiration on the whole idea.
<rs@474.at>
This program is free software; you can redistribute it and/or modify it under the same terms as perl itself.
To install namespace::clean, copy and paste the appropriate command in to your terminal.
cpanm
cpanm namespace::clean
CPAN shell
perl -MCPAN -e shell install namespace::clean
For more information on module installation, please visit the detailed CPAN module installation guide.