Misc

Case sensitivity

• Ruby is case sensitive.

Memory management

• Mark-and-sweep garbage collector, which works with all Ruby objects

Modules

• load '[PATH/]myfile.rb'
• require '[PATH/]myfile[.rb]'

Misc

• Object-oriented scripting language
• Useful for processing text files and performing system management tasks (as with Perl and Python)
• Heavily influenced by Smalltalk
• Licensed under the Ruby License and the GPL (in effect, FSF-approved; GPL-compatible)

• Modules: Collections of methods; every class can import a module and get all of its methods

• OS-independent threading, for all platforms (whether or not the OS supports threading)

• The notation Class#method is sometimes used in documentation to represent an instance method; it is not valid Ruby syntax

• dup method - Create a duplicate object
• freeze method - write-protect an object