I was recently looking to compute a sha1 hash in ruby, and l luckily
google turned up a quick example because I found the digest docs here
http://www.ruby-doc.org/stdlib/ very cryptic and difficult to read.

How am I to interpret what I see in the digest api docs? There's no
example, not even an obvious entry point. How do I look at that doc
and know what I need to "require" and then what classes I'll be using
to accomplish my task?

Luckily this dude and google to the rescue http://snippets.dzone.com/posts/show/83.

Mike