OBJECT-ORIENTED PROGRAMMING WITH C++

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See option ftree-vect-loop-version for more information. Si une classe B hérite d'une classe A, elle peut grâce à ce mot-clé passer des membres protected de A en public dans B, ou encore démasquer une fonction membre de A qui le serait par une fonction membre de B de même nom : class A { protected: void f(); public: void g(); }; class B: public A { public: using A::f; // rend public A::f() }; class C: public A { public: void g(int); // masque A::g() }; class D: public A { public: void g(int); // masque A::g() using A::g; // démasque A::g() }; int main() { A a; a.f(); // impossible car f est protégée dans A B b; b.f(); // possible car A::f est publique dans B C c; c.g(); // impossible car A::g() est masquée par C::g(int) dans C D d; d.g(); // possible car A::g() est démasquée dans D } Il est d'usage de séparer prototype (déclaration) et implémentation (définition) de classe dans deux fichiers : la déclaration se fait dans un fichier d'en-tête (dont l'extension varie selon les préférences des développeurs : sans extension dans le standard, .h comme en C, .hh ou .hpp ou .hxx pour différencier le C++ du C) alors que la définition se fait dans un fichier source (d'extension également variable : .c comme en C, .cc ou .cpp ou .cxx pour différencier le C++ du C). // messageinternet.hpp #include class MessageInternet { private: const std::string m_sujet, m_expediteur, m_destinataire; // attributs public: MessageInternet( const std::string& sujet, const std::string& expediteur, const std::string& destinataire); // constructeur ~MessageInternet(); // destructeur const std::string& get_sujet() const; // méthode const std::string& get_expediteur() const; // méthode const std::string& get_destinataire() const; // méthode }; // messageinternet.cpp #include "messageinternet.hpp" // constructeur MessageInternet::MessageInternet( const std::string& sujet, const std::string& expediteur, const std::string& destinataire): m_sujet(sujet), m_expediteur(expediteur), m_destinataire(destinataire) { } // destructeur (pour libérer les ressources acquises; dans notre cas il n'y a rien à faire) MessageInternet::~MessageInternet() { } const std::string& MessageInternet::get_sujet() const { return m_sujet; } const std::string& MessageInternet::get_expediteur() const { return m_expediteur; } const std::string& MessageInternet::get_destinataire() const { return m_destinataire; } Les templates permettent d'écrire des fonctions et des classes en paramétrant le type de certains de leurs constituants (type des paramètres ou type de retour pour une fonction, type des éléments pour une classe collection par exemple).

Pages: 220

Publisher: PHI (January 30, 2012)

ISBN: B00K7YGM8S

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The threshold ratio (as a percentage) between a structure frequency and the frequency of the hottest structure in the program ref.: A Tour of C++ (C++ In-Depth download online A Tour of C++ (C++ In-Depth Series). The solution is achieved through polymorphism. We define a base, interface class with virtual members in the executable, and a derived, implementation class in the module. Generally the interface class is abstract (a class is abstract if it has pure virtual functions). As dynamic loading of classes is generally used for plug-ins — which must expose a clearly defined interface — we would have had to define an interface and derived implementation classes anyway C++ Simulations and Cellular Automata http://www.cauldronsandcrockpots.com/books/c-simulations-and-cellular-automata. Prefer explicit captures if the lambda may escape the current scope. For example, instead of: { Foo foo; ... executor->Schedule([&] { Frobnicate(foo); }) ... } // BAD! The fact that the lambda makes use of a reference to `foo` and // possibly `this` (if `Frobnicate` is a member function) may not be // apparent on a cursory inspection Learning Programming Learning read epub Learning Programming Learning Java.

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