The Book of Ruby
By Huw Collingbourne
| Isbn10: | 1593272944 |
| Isbn13: | 9781593272944 |
| Publisher: | No Starch Press |
| Published: | 2011 |
Covers the features of Ruby, including such topics as strings, class hierarchies, arrays and hashes, loops, methods, exception handling, symbols, YAML, and debugging.