Essential Books

Customizing a structure class

suggest change 
Person = Struct.new :name do
  def greet(someone)
    "Hello #{someone}! I am #{name}!"
  end
end

Person.new('Alice').greet 'Bob'
# => "Hello Bob! I am Alice!"
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Struct:
* Struct
* Creating new structures for data
* Customizing a structure class
* Attribute lookup
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