"metaclasses" - 1 õppematerjal

Ruby

 Version Ruby 1.9 Ruby 1.9 was released in December 2007. The latest stable version of the reference implementation is 1.9.3 and is dual-licensed under the Ruby License and a BSD License. Ruby 2.0 Ruby 1.9 will be followed by Ruby 2.0. Ruby 2.0 is rumored to be "100% compatible" with Ruby 1.9.3. As of October 2011, the plan is to have code freeze October 2012 and release February 2013.  Features · Thoroughly object-oriented with inheritance, mixins and metaclasses · Dynamic typing and duck typing · Everything is an expression (even statements) and everything is executed imperatively (even declarations) · Succinct and flexible syntax that minimizes syntactic noise and serves as a foundation for domain-specific languages · Dynamic reflection and alteration of objects to facilitate metaprogramming · Lexical closures, iterators and generators, with a unique block syntax · Literal notation for arrays, hashes, regular expressions and symbols