Head First Ruby: A Brain-Friendly Guide HD PDF

Ruby is a simple and fast object-oriented programming scripting language that is obviously younger than other similar programming languages (such like Perl or Python). It was written by Yukihiro Matsumoto from Japan (started in 1993 and finished in 1995). The inspiration and characteristics of Ruby are mainly from Perl, Squeak/Smalltalk, Eiffel, Ada and Lisp programming languages.