安插的位置为explict user code之前 3. 初始化使用存在constructor体内的一个member,而不是member initialization list中的member 调用类成员函数来初始化一个member 这种情况是在member initialization list调用一个成员函数来初始化成员member,可能会出现未定义的行为。 X::X(intval) : i(xfoo(val)),j(val) {} ...
编译器在实现initialization list时,以适当顺序在constructor之内安插初始化操作,并且在任何explict user code之前。但是有一些细微的地方要注意:list之中的项目顺序是由class中成员变量的声明顺序决定的,不是由initialization list中的排列顺序决定的,例如: class X { int i; int j; public: X(int val):j(val),...
编程英语常... ... member function/ 成员函式 成员函数member initialization list/成员初值列成员初始值列表 memberwise/ 以 ... www.docin.com|基于80个网页 3. 初始化队伍 2.4 成员们的初始化队伍(Member Initialization List)第3章 Data语意学(The Semantics of Data)3.1 Data Member的绑定(The Bin… ...
默认构造+拷贝赋值 使用Member Initialization List #include<iostream>usingnamespacestd;classBaseTest1{public:BaseTest1();BaseTest1(constBaseTest1&t1);BaseTest1&operator=(constBaseTest1&t1);private:inta;};BaseTest1::BaseTest1(){cout<<"BaseTest1 Constructor"<<endl;this->a=0;}BaseTest1::BaseTest1(...
class MemberInitializationList { private: int i; int j; public: MemberInitializationList(int val) :j(val), i(j)//j(val), i(j)就是所谓的成员初始化列表 { } inline void printInfo() { cout << "i = " << i << ", j = " << j << endl; ...
12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. members shall be initialized in the member initialization list,这个时候,必须使用member initialization list来初始化,因为类中嵌套了另一个类。 foo's volume: 6283.19 1.
更多例句筛选 1. When an array is in a constructor's member initialization list, the elements of the array will be default initialized. 当阵列在建构函式的成员初始设定清单中时,阵列元素将预设为初始化。 msdn.microsoft.com 2. If you want the compiler's previous ...
#include <iostream> class Foo { private: int m_x {}; int m_y {}; public: Foo(int x, int y) : m_x { x }, m_y { y } // here's our member initialization list { std::cout << "Foo(" << x << ", " << y << ") constructed\n"; } void print() const { std::...
For initialization of base class members or When constructor’s parameter name is same as data member(this is not really a MUST) A code example: class MyClass { public: // Reference member, has to be Initialized in Member Initializer List int &i; int b; // Non static const me...
If type T does have default constructor and one or more user-defined constructors and one time you decide to remove or hide the default one, then if initialization list was used, you don't need to update code of your user-defined constructors because they are already correctly implemented....