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Ruby's design forces all instance variables to be private, but also provides a simple way to declare set and get methods. This is in keeping with the idea that in Ruby one never directly accesses the internal members of a class from outside the class; rather, one passes a message to the class and receives a response.
Many motifs have become inside jokes in the Ruby community, such as references to the words "chunky bacon". The book includes many characters which have become popular as well, particularly the cartoon foxes and Trady Blix, a large black feline friend of why's, who acts as a guide to the foxes (and occasionally teaches them some Ruby).
Ruby is an interpreted, high-level, general-purpose programming language. It was designed with an emphasis on programming productivity and simplicity. In Ruby, everything is an object, including primitive data types. It was developed in the mid-1990s by Yukihiro "Matz" Matsumoto in Japan.
It would be followed in the early 2000s by around 20 books on Ruby published in Japanese. [47] By 2000, Ruby was more popular than Python in Japan. [55] In September 2000, the first English language book Programming Ruby was printed, which was later freely released to the public, further widening the adoption of Ruby amongst English speakers.
Ruby on Rails includes tools that make common development tasks easier "out-of-the-box", such as scaffolding that can automatically construct some of the models and views needed for a basic website. [48] Also included are WEBrick, a simple Ruby web server that is distributed with Ruby, and Rake, a build system, distributed as a gem. Together ...
Sinatra is a free and open source software web application library and domain-specific language [2] written in Ruby. It is an alternative to other Ruby web application frameworks such as Ruby on Rails, Merb, Nitro, and Camping. It is dependent on the Rack web server interface. It is named after musician Frank Sinatra. [3]
The book has helped Ruby to spread outside Japan. [1] The complete first edition of this book is freely available under the Open Publication License v1.0, and was published by Addison-Wesley in 2001. The second edition, covering the features of Ruby 1.8, was published by The Pragmatic Programmers, LLC in 2004.
The content of the tag is evaluated as Ruby code and is expected to be a path pointing to a Ruby template file which is read, evaluated, and rendered. Same as <% + %> but file contents are simply rendered into the output. Treats the enclosed code as a block of Ruby code and (if necessary) appends a do keyword to the body of the tag.