我有以下代码实现回调。我希望回调能够采用一些参数,但只能在没有参数的情况下进行编译。
#include <iostream>
#include <string>
#include <functional>
template<typename TDeserialisable>
class Images;
class Analyze;
class X
{
void operator()(...) {}
};
/** Interface for serialising/deserialising types defined by TDeserialisable */
template<typename TDeserialisable>
class IDeserialisable
{
public:
virtual void deserialise(std::function<void()> callback) = 0;
virtual void deserialise(std::function<void(IDeserialisable<TDeserialisable>&)> callback) = 0;
};
class Analyze
{
public:
void operator()()
{
// deserialise
}
void operator()(Images<Analyze>& images)
{
// deserialise
}
};
template<typename TDeserialisable>
class Images : public IDeserialisable<TDeserialisable>
{
private:
virtual void deserialise(std::function<void()> callback)
{
callback();
}
virtual void deserialise(std::function<void(IDeserialisable<TDeserialisable>&)> callback)
{
callback(*this);
}
};
int main()
{
Analyze a;
Images<Analyze> images;
// calls the first overload
static_cast<IDeserialisable<Analyze>&>(images).deserialise(a);
// how do I call the second overload of deserialise?
return 0;
}
如何调用deserialise的第二个重载?
答案 0 :(得分:0)
您需要将输入参数类型指定为std::function
template
类型的函数参数。类似的东西:
std::function<void(Analyze&, Images<Analyze>&)> mf_p = Analyze::operator();