Ruby 2.0 发布首个预览版

Ruby 发布了 2.0 首个预览版本,下载地址:

http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-dev/46348

该版本改进记录:

  - Refinements   - Keyword arguments   - Enumerator#lazy   - Module#prepend   - Converting convention to Hash: #to_h   - %i: a literal for symbol array   - regexp engine is changed to Onigmo   - DTrace support

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