Question

我尝试编译simple C++11 code（我主要针对vs2010而且还作为次要选项vs 2012）they say它应该编译并is compilable on some modern compilers 所以我想知道如何编译包含结构的代码，如：

struct C {
    A *_first__;
    B *_second__;
     C(A * _first__, B * _second__):_first__(_first__), _second__(_second__) {
    } template < typename K, typename ... T > static auto _a_caller__(K * k, T && ... args)->decltype(k->a(std::forward < T > (args) ...)) {
    return k->a(std::forward < T > (args)...);
    }
    template < typename...T > auto a(T &&...args)->decltype(_a_caller__(_first__, std::forward < T > (args)...)) {
        return _a_caller__(_first__, std::forward < T > (args)...);
    }
    template < typename...T > auto a(T &&...args)->decltype(_a_caller__(_second__, std::forward < T > (args)...)) {
        return _a_caller__(_second__, std::forward < T > (args)...);
    }
    template < typename K, typename...T > static auto _b_caller__(K * k, T && ... args)->decltype(k->b(std::forward < T > (args) ...)) {
        return k->b(std::forward < T > (args)...);
    }
    template < typename...T > auto b(T &&...args)->decltype(_b_caller__(_first__, std::forward < T > (args)...)) {
        return _b_caller__(_first__, std::forward < T > (args)...);
    }
    template < typename...T > auto b(T &&...args)->decltype(_b_caller__(_second__, std::forward < T > (args)...)) {
        return _b_caller__(_second__, std::forward < T > (args)...);
    }
};

在vs 2010中如果不可能在vs2012中出现？

Answer 1

VS2010和VS2012都不支持可变参数模板：http://msdn.microsoft.com/en-us/library/vstudio/hh567368.aspx 它们在VS2012 CTP中受支持：http://blogs.msdn.com/b/vcblog/archive/2012/11/02/visual-c-c-11-and-the-future-of-c.aspx

如果您打算使用CTP，请参阅Variadic Template in VS 2012 (Visual C++ November 2012 CTP)。

VS2010和VS2012和C ++ 11错误C2059：语法错误：'...'如何绕过？

1 个答案: