Ruby袖珍參考手冊pdf英文文字版
Ruby，一種為簡單快捷的面向?qū)ο缶幊蹋嫦驅(qū)ο蟪绦蛟O(shè)計）而創(chuàng)的腳本語言，在20世紀(jì)90年代由日本人松本行弘（まつもとゆきひろ/Yukihiro Matsumoto）開發(fā)，遵守GPL協(xié)議和Ruby License。它的靈感與特性來自于 Perl、Smalltalk、Eiffel、Ada 以及 Lisp 語言。由 Ruby 語言本身還發(fā)展出了JRuby（Java 平臺）、IronRuby（.NET 平臺）等其他平臺的 Ruby 語言替代品。Ruby的作者于1993年2月24日開始編寫Ruby，直至1995年12月才正式公開發(fā)布于fj（新聞組）。因為Perl發(fā)音與6月誕生石pearl（珍珠）相同，因此Ruby以7月誕生石ruby（紅寶石）命名。

Whether you've come to Ruby because of the Rails web development framework --Ruby's killer app -- or simply because it's a relatively clean, powerful and expressive language that's useful for a lot of applications, the Ruby Pocket Reference is organized to help you find what you need quickly. This book not only will get you up to speed on how Ruby works, it provides you with a handy reference you can use anywhere, anytime.

In this book, you find essential information on:

Reserved words, operators, comments, numbers, variables, ranges, and symbols
Predefined variables andglobal constants
Conditional statements, method use, classes, and modules (mixins)
Lists of methods from the Object, String, Array, and Hash classes and the Kernel module
sprintf andtime formatting directories
Interactive Ruby (irb) and the Ruby debugger
Ruby documentation