About the Author
Laurent Rosenfeld has been a software engineer for about 20 years, working especially as a contractor for one of the largest telecommunication operator in Europe, particularly in the field of mobile networks. Over the last few years, he has been working especially in the fields of data migration, data quality, and data munging. He has written a number of tutorials on Perl 5 and Perl 6.
Allen Downey is a Professor of Computer Science at Olin College of Engineering. He has taught at Wellesley College, Colby College and U.C. Berkeley. He has a Ph.D. in Computer Science from U.C. Berkeley and Master's and Bachelor's degrees from MIT.