[](p1) public

Attribute Reference—Returns the value of the instance variable named by symbol, or indexed (0..length-1) by fixnum. Will raise NameError if the named variable does not exist, or IndexError if the index is out of range.

Customer = Struct.new(:name, :address, :zip)
joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)

joe["name"]   #=> "Joe Smith"
joe[:name]    #=> "Joe Smith"
joe[0]        #=> "Joe Smith"
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