Rails中.nil? .empty? .any? .blank? .present?的区别

Posted on 2017-11-21 21:41  LizChen88  阅读(141)  评论(0)  编辑  收藏  举报

http://mayalin.logdown.com/posts/2016/09/08/rails-nil-empty-any-blank-present-the-difference