发布时间: 2013-01-30 02:09:00
参考: http://stackoverflow.com/questions/1560572/ruby-delete-multiple-hash-keys
sg552@youku:/sg552/workspace/postman$ bundle exec rails c Loading development environment (Rails 3.2.9) >> apple = {:shape => 'ball', :taste => 'sweet', :color => 'red' } => {:shape=>"ball", :taste=>"sweet", :color=>"red"} >> apple.except(:shape, :color) => {:taste=>"sweet"}
结论: ActiveSupport 需要我们挖掘的东西太多了, 有空时务必看一下 ( we need to keep learning ActiveSupport )
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