摘要： tap and trytap%w(x y z).push('a').shift.tap {|x| p x }.upcase.next[].tap {|i| i :b)# Arguments: [1, 2]# Options: {:a=>:b}跳过modle更新数据库：ActiveRecord::Base.connection.execute("update corps set followers_count = #{followers_count} and staffers_count = #{staffers_count} where id = 1" 阅读全文