This document provides an overview of the Ruby programming language. Some key points:
- Ruby was created by Yukihiro Matsumoto and first released publicly in 2005.
- Everything in Ruby is an object, allowing for powerful iteration capabilities. Common iteration methods include each, upto, and times.
- Ruby uses case/when for conditional logic similar to switch statements in other languages. Regular expressions and ranges can be used in when clauses.
- Arrays are a fundamental data structure in Ruby. Common array methods demonstrated include at, <<, unshift, compact, and indexing with negative numbers. Multidimensional arrays are possible by nesting arrays.