each_pair() public

Calls block once for each instance variable, passing the name (as a symbol) and the value as parameters.

   Customer = Struct.new(:name, :address, :zip)
   joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
   joe.each_pair {|name, value| puts("#{name} => #{value}") }


   name => Joe Smith
   address => 123 Maple, Anytown NC
   zip => 12345
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