Ruby on Rails

  {:cod => "0001", :name => "name1", :val => 12},

  {:cod => "0002", :name => "name2", :val => 13},

  {:cod => "0002", :name => "name2", :val => 14},

  {:cod => "0002", :name => "name2", :val => 14},

  {:cod => "0004", :name => "name4", :val => 16},

  {:cod => "0004", :name => "name4", :val => 16},

  {:cod => "0004", :name => "name4", :val => 17},

  {:cod => "0005", :name => "name5", :val => 17},

  {:cod => "0005", :name => "name5", :val => 17},

  {:cod => "0005", :name => "name5", :val => 17},

  {:cod => "0006", :name => "name6", :val => 110},

  {:cod => "0006", :name => "name6", :val => 10},

]

What I would like to learn how to do is how to remove a record if it is duplicate end sum values :val.

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