chromatic (programmer)

chromatic is a writer and free software programmer best known for his work in the Perl programming language. He lives in Hillsboro, Oregon, United States. He wrote Extreme Programming Pocket Guide, co-wrote of Perl Testing: A Developer's Notebook, is lead author of Perl Hacks, and an uncredited contributor[1] to The Art of Agile Development.[2] He has a music degree.[3] He has contributed to CPAN, Perl 5, Perl 6, and Parrot.

OccupationProgrammer, author, editor, publisher
EmployerOnyx Neon, Inc.
Big Blue Marble

In 2009, he founded Modern Perl Books, in part to revitalize the world of Perl and to publish materials that other publishers had neglected.[4]

In 2010, he released the book Modern Perl in print and in electronic form, with the latter redistributable freely (though with a suggested donation). An updated edition was released in 2012, with the entire text online.[5]


While he may be most currently known for the module "Modern::Perl", chromatic originally wrote "Test::Builder", which is the foundation of most testing in the Perl world.

Perl 6

chromatic spent several years as the Perl 6 project secretary. He is one of the biggest proponents of "roles" in Perl 6 (what some other programming languages refer to as "traits").[6]


chromatic has been a core developer of Parrot. He was also secretary of the Parrot Foundation from 2008 until 2010.[7]


  1. Books by chromatic
  2. Shore, James; Warden, Shane (October 2007). The Art of Agile Development. Sebastopol, California: O'Reilly Media. ISBN 978-0-596-55379-1.
  3. Shane Warden and Jim Shore (July 2008). On the Art of Agile Development (YouTube video). OSCON 2008. Portland, Oregon: O'Reilly Media. Event occurs at 3:15. I have a degree in music. The day I graduated I said, 'I like to eat and I don't want to be living in a van the rest of my life so I am going to go find something else to do.'CS1 maint: others (link)
  4. Onyx Neon Press
  5. Modern Perl: The Book
  6. Who's Who in Perl 6, parrot and Pugs
  7. Who's Who in Parrot

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