我想使用对象实例为模块/函子,更多或更少的,如下所示: abstract class Lattice[E] extends Set[E] {
val minimum: E
val maximum: E
def meet(x: E, y: E): E
def join(x: E, y: E): E
def neg(x: E): E
}
clas
我有这样的代码: #include <iostream>
#include <functional>
struct A
{
int operator()(int i) const {
std::cout << "F: " << i << std::endl;
return i + 1;
}
};
int main()
{
A a
我试图附加一个函数对象,用于对模板化类的销毁进行调用。但是,我似乎无法将函数对象作为临时对象传递。我得到的警告(如果注释行xi.data = 5;): warning C4930: 'X<T> xi2(writer (__cdecl *)(void))':
prototyped function not called (was a variable definition intended