int main(int argc, char const *argv[]) { ExFoo foo1; // ok if (foo1) { std::cout << "..." << std::endl; } // error bool a = foo1; } 即使使用explicit,还是可以使用foo1 ? xxx : yyy这种方便的三元运算符。同时禁止了bool a = foo1这种无意义并且有隐患的类型转换。 所以,大...
Consider checking the first actual argument of the 'Foo' function. V679. The 'X' variable was not initialized. This variable is passed by reference to the 'Foo' function in which its value will be used. V680. The 'delete A, B' expression only destroys the 'A' object. Then the ','...
如果要实现vector作为XC的第二个模板,那么需要指明vector的两个模板参数: template<classT>classTest{}; template<classT1,classT2, template<classCT1,classCT2>classC>classXC {private://C可以是List,该list需要一个模板参数CT,可以是任何类型,这里使用T的类型C<T1,T2>c; }; 调用: //实际上xc中的c的类...
#include<iostream>classFoo{private:intm_x{};public:Foo(intx):m_x{x}{}intgetX()const{returnm_x;}};voidprintFoo(Foo f)// has a Foo parameter{std::cout<<f.getX();}intmain(){printFoo(5);// we're supplying an int argumentreturn0;} Copy In this version,printFoohas aFooparameter...