This work, CPAN tutorials, is a derivative of RubyGems Guides (guides.rubygems.org) by Gabe Berke-Williams, Gregory Brown, Amaia Castro, Ryan Davis, Vijay Dev, Evgene Dzhelyov, Mike Gunderloy, Gabriel Horner, Richard Michael, John Lees-Miller, Mark McSpadden, Erik Michaels-Ober, Scott Moak, Jason Morrison, Ryan Neufeld, Nick Quaranto, Sebastian Spier, Antonio Terceiro, thrackle, used under CC BY SA. CPAN tutorials is licensed under CC BY SA by Miroslav Tynovsky, E. Choroba.