Ruby From Other Languages
When you first look at some Ruby code, it will likely remind you of other programming languages you’ve used. This is on purpose. Much of the syntax is familiar to users of Perl, Python, and Java (among other languages), so if you’ve used those, learning Ruby will be a piece of cake.
This document contains two major sections. The first attempts to be a rapid-fire summary of what you can expect to see when going from language X to Ruby. The second section tackles the major language features and how they might compare to what you’re already familiar with.
What to Expect: Language X to Ruby
Ruby From Other Languages
是ruby官方網站寫的,比較了其他主流編程語言和ruby的異同之處,給出了ruby比較有特點的功能介紹。
http://www.ruby-lang.org/en/documentation/ruby-from-other-languages/