2006-07-15 C++ から Ruby ruby prog http://d.hatena.ne.jp/koto_ne/?of=3 ruby.h http://www.math.ias.edu/doc/ruby-docs-1.8.2/refm-ja/refm430.html RubyExtensionProgrammingGuide http://www.loveruby.net/w/RubyExtensionProgrammingGuide.html