并行赋值会调用to_ary
才在IronPython的bug tracker上看到一个IronRuby的bug（汗）才知道原来有这么回事。[code="irb"]irb(main):001:0> o = Object.new=> #irb(main):002:0> def o.to_aryirb(main):003:1> [2, 3]irb(main):004:1> end=> nilirb(...
