Programming Ruby: The Pragmatic Programmers' Guide by Dave Thomas, Chad Fowler, Andy Hunt (ASIN 0974514055) for $44.95 Not yet released. Ruby Developer's Guide by Michael Neumann, Lyle Johnson, Robert Feldt, Lyle Johnson, Jonothon Ortiz (ASIN 1928994644) for $32.97 Usually ships in 11 to 12 days Sams Teach Yourself Ruby in 21 Days by Mark Slagell (ASIN 0672322528) for $28.39 Usually ships in 1 to 3 weeks Ruby In A Nutshell by Yukihiro Matsumoto (ASIN 0596002149) for $16.47 Usually ships in 24 hours The Ruby Way by Hal Fulton (ASIN 0672320835) for $27.19 Usually ships in 24 hours Making Use of Ruby by Suresh Mahadevan, Suresh Mahadevan, Rashi Gupta, Shweta Bhasin, Madhushree Ganguly, Ashok Appu (ASIN 047121972X) for $23.80 Usually ships in 24 hours Game Programming with Python, Lua, and Ruby by Tom Gutschmidt (ASIN 1592000770) for $26.39 Usually ships in 24 hours
Figure 1: Output from Listing One.