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Initialization Lists in Constructors In C++, class members can be initialized not only within the constructor body but also using an initialization list. This syntax appears between the constructor's parameter list and its opening brace: class Date { public: Date(int year, int month, int day) : year_(year), month_(month), ...

Constructor Body Assignment vs. Member Initializer Lists Assigning values inside the constructor body merely updates existing instances after they have been default-constructed. True initialization must occur before the constructor body executes. The member initializer list provides a direct mechanism to bind arguments to data members during ob ...