Ruby

• Array
• Benchmark
• Case Statements
• Class
• Comparing Strings in Ruby
• Constants
• Hash
• Lambda
• Multiline Strings
• Native Extensions
• Open Struct
• Plain Old Ruby Objects
• Private Methods
• Range
• Regular Expressions on Strings
• String
• String Concatenation
• String Interpolation
• Struct
• Do Ranges use 2 or 3 periods