Name
Math::Subsets::List - Generate all the subsets of a list.
Synopsis
use Math::Subsets::List;
subsets {say "@_"} qw(a b c);
#
# a
# b
# c
# a b
# a c
# b c
# a b c
Description
Generate all the subsets of a list and process them using the standard
Perl metaphor.
"subsets()" returns the number of subsets. Please note that this
includes the empty set as it is a subset of all sets.
Please note that the order in which the subsets are generated is not
guaranteed, so please do not rely on it.
"subsets()" is easy to use and fast. It is written in 100% Pure Perl.
Export
The "subsets()" function is exported.
Installation
Standard Module::Build process for building and installing modules:
perl Build.PL
./Build
./Build test
./Build install
Or, if you're on a platform (like DOS or Windows) that doesn't require
the "./" notation, you can do this:
perl Build.PL
Build
Build test
Build install
Author
PhilipRBrenan@appaapps.com
http://www.appaapps.com
Acknowledgments
With lots of help and advice from Philip Rumpff to who I am most
grateful.
See Also
Math::Cartesian::Product
Math::Disarrange::List
Math::Permute::List
Copyright
Copyright (c) 2009 Philip R Brenan.
This module is free software. It may be used, redistributed and/or
modified under the same terms as Perl itself.