From: "Jörg W Mittag" <JoergWMittag+Ruby@...>
Date: 2011-02-08T01:30:15+09:00
Subject: Re: require does not work

Tony Montana wrote:
> Thank you for help pal! Now it works.
> Seems in time the book was writing there wasn't such error and it should 
> work fine in versions of ruby up to 1.9.2.

Ruby 1.9.2 is the first version of Ruby 1.9 to be considered
feature-complete, stable, and ready for production use.

Unfortunately, many books that cover Ruby 1.9 were actually written
for 1.9.1 (which was an interim release) or 1.9.0 (which was a
development release).

However, I don't think it would be a good idea to use 1.9.1 or 1.9.0
for learning, just for compatibility with the books. Instead, for the
foreseeable future, you'll just have to check the errata websites for
all books released before, say, the winter of 2010.

jwm