Implementation status

Attention: Still in alpha, so the implementation and builtin libraries are immature.
Please note that some of features listed below are functional but still currently incomplete.

• Literals
  • Bool
  • Integer
  • Float
  • Imaginary number literal
  • String literal
  • String literal with interpolation
  • % notation
  • Heredocument
  • Array literal
  • Hash literal
  • Lambda literal
  • Block literal
  • Regular expression
• Builtin Class
  • Object
  • Module
  • Class
  • Integer
  • Float
  • Complex
  • Symbol
  • String
  • Range
  • Array
  • Hash
  • Proc
  • Method
  • Regexp
  • Struct
  • Enumerator
  • Fiber
  • Struct
  • Exception
  • Binding
• Variables
  • Local variable
  • Instance variable
  • Class variable
  • Global variable
• Constants
  • Constant
• Branch and Loop
  • If-then-elsif-else
  • Unless-then-else
  • Postfix if / unless
  • For-in
  • Break / Continue
  • While
  • Until
  • Postfix while / until
  • Case-when
  • Return
  • Case-in
• Flow control
  • Break / Next
  • Retry
  • Begin-rescue-ensure
• Methods
  • Instance Method
  • Class Method
  • Singleton Method
  • Method missing
• Class and Module
  • Subclass
  • Singleton class
  • Initializer
  • Attribute accessor
  • open class (Ad-hoc class definition)
  • Module
  • include / prepend