Introduction                       Creational                       Structural                       Behavioral
                                         C++designpatterns
                                                     P. Ronchese
                        Dipartimento di Fisica e Astronomia “G.Galilei”
                                                   Università di Padova
                        “Object oriented programming and C++” course
                         Object oriented programming and C++      C++designpatterns - 1
   Introduction                       Creational                       Structural                       Behavioral
   Design patterns
                                              A“design pattern” is
                            acommonsolutionfor a common problem
                              They became popular due to a book by
                         Erich Gamma, Richard Helm, Ralph Johnson
                       and John Vlissides, known as “the gang of four”,
                       whoidentified and described 23 classic patterns.
                  Adesign pattern is not an algorithm.
                  Adesign pattern is a repeatable solution or approach to a
                  design problem.
                  Design patterns can be classified in 3 main categories.
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   Introduction                       Creational                       Structural                       Behavioral
   Pattern classification
                          Design patterns are classified depending on
                                    the design problem they address
                                              Creational patterns.
                                              Structural patterns.
                                              Behavioral patterns.
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   Introduction                       Creational                       Structural                       Behavioral
   Creational patterns
                          Creational patterns deal with object creation
                                              Singleton
                                              (Abstract) Factory
                                              Builder
                                              Prototype
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