はてなブックマーク - Springenwerk Blog by Johannes Fahrenkrug: MacRuby and Core Data Tutorial https://b.hatena.ne.jp/entry/blog.springenwerk.com/2008/10/macruby-and-core-data-tutorial.html Watson https://b.hatena.ne.jp/Watson/20100222#bookmark-19517653 2010-02-22T13:19:17Z macruby