411 REFERENCE · Wikibooks
Ruby Programming/Exceptions
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
There is no exceptions chapter at present.
Instead, here is a link to a chapter about exceptions from Yukihiro Matsumoto's book, Programming Ruby: The Pragmatic Programmer's Guide
More detail and simpler examples about exceptions, by Satish Talim, maybe found in a tutorial at RubyLearning.com