It’s a little thing, this Ruby Pocket Reference, but it's also a mighty big thing if you are working with the Ruby language. Ruby is an easy language to learn, but when you are down in the trenches and, especially, when you are far from home, its nice having this little reference book close by. It can be very important indeed!
The Ruby Pocket Reference, 170 pages in length and a little larger than 6 by 4 inches, breaks down into logical categories that I have listed below. The explanations and examples are concise and to the point, covering the Ruby language in detail and giving good descriptions of the main concepts and points - and as such, it is organized very well.
If you own Fitzgerald's book, Learning Ruby, the pocket reference is the perfect companion as a light weight tag-a-long. It also has some things not found in other books - some that Windows users might find handy, such as how to associate the .rb file type with the Ruby interpreter. This can allow you to launch scripts from the command line within Windows. Since it is fully indexed, it is really easy to find what you need quickly. It also has a glossary for less common terms as well as a link to online Ruby resources.
- Ruby Pocket Reference Sections
The IO Class
Time Formatting Directives