Question

我正在尝试使用带有实例方法的boost :: function，使用以下示例

class someclass
{
public:

    int DoIt(float f, std::string s1)
    {
        return 0;
    }

    int test(boost::function<int(float, std::string)> funct)
    {
         //Funct should be pointing to DoIt method here
         funct(12,"SomeStringToPass");
    }

    void caller()
    {
                test(DoIt); //Error : 'someclass::DoIt': function call missing argument list; use '&someclass::DoIt' to create a pointer to member
    }
};

有关如何解决此问题的任何建议吗？

Answer 1

您应该使用boost::bind：

#include <boost/function.hpp>
#include <boost/bind.hpp>
#include <string>
#include <iostream>

using namespace std;

class someclass
{
public:

    int DoIt(float f, std::string s1)
    {
        return 0;
    }

    int test(boost::function<int(float, std::string)> funct)
    {
        return funct(5.0, "hello");
    }

    void caller()
    {
        cout << test(boost::bind(&someclass::DoIt, this, _1, _2)) << endl;
    }
};

int main() {
    someclass s;
    s.caller();
}

使用boost :: function和实例方法

1 个答案: