If a method name ends in an equals sign (=), as in family_name= : Reserved words « Language Basics « Ruby

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Ruby » Language Basics » Reserved words   If a method name ends in an equals sign (=), as in family_name= the method is a "setter,"  class Name   def family_name=( family )     @family_name = family   end   def given_name=( given )     @given_name = given   end end n = Name.new n.family_name= "Matsumoto" # => "Matsumoto" n.given_name= "Yukihiro" # => "Yukihiro" p n # => <Name:0x1d441c @family_name="Matsumoto", @given_name="Yukihiro">   Related examples in the same category 1.  Ruby's reserved words 2.  If a method name ends with a question mark (?), as in eql?, then the method returns a Boolean 3.  If a method name ends in an exclamation point (!), as in delete! 4.  Classes and modules begin with an upper case letter.

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