The require_gem command is gone. It’s just gem now. (RubyGems 0.9.0.8 and later.)

 require 'rubygems'
 gem 'camping', '=1.5'
 require 'camping'

To try out the latest beta gem:

  gem update --system --source http://onestepback.org/betagems

(Thanks 1vy!)

Okayyy. So, I really thought our free books were in decline. But what’s this? Elizabeth Wiethoff started a book back during the summer titled How To Think Like a Computer Scientist: Learning With Ruby. (She translating from the Java one.) I checked del.icio.us and only one person knew about it.

She’s only three chapters deep, but a lot of the code is there. One thing about this book: if you’re precocious, I’m sure you could help her translate some chapters. I mean there’s already some blank bullets for you on the contrib page.