std线程调用模板成员函数模板类：编译错误 [英] std thread call template member function of template class: compiler error

问题描述

这是代码。它不编译在vs2013，但编译在gcc4.8

Here is the code. It does not compile in vs2013, but does compile in gcc4.8

错误C2665：'std :: thread :: thread'：没有一个4重载可以转换所有参数类型

error C2665: 'std::thread::thread' : none of the 4 overloads could convert all the argument types

由于我使用vs2013，任何人都可以提供解决方法？

Since I am using vs2013, can anyone provide workaround?

#include <iostream>
#include <thread>

template<typename T> 
class TestClass
{
public:
    TestClass(){};
    ~TestClass(){};

    T  t;

    template<typename U>
    void fun(U u)
    {
        std::cout << "fun: " << u << '\n';
    }
};

int main()
{
    TestClass<double>  A;

    auto aaa = std::thread(&TestClass<double>::fun<int>, &A, 1);
}

推荐答案

而不是使用成员函数指针：

You could simply use a lambda rather than monkeying with member function pointers:

auto aaa = thread( [&]{ A.fun(1); } );
aaa.join();

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