我想在 std::vector 中存储三个任意整数，而不定义结构/类。所以我选择了 std::tuple<>:
std::vector<std::tuple<unsigned int, unsigned int, unsigned int>
使用MS VS 2013，会导致以下错误：
>c:\program files (x86)\microsoft visual studio 12.0\vc\include\vector(1628): error C2036: 'std::tuple<unsigned int,unsigned int,unsigned int> *' : unknown size
1> c:\program files (x86)\microsoft visual studio 12.0\vc\include\vector(1622) : while compiling class template member function 'void std::vector<std::tuple<unsigned int,unsigned int,unsigned int>,std::allocator<_Ty>>::_Tidy(void)'
1> with
1> [
1> _Ty=std::tuple<unsigned int,unsigned int,unsigned int>
1> ]
1> c:\program files (x86)\microsoft visual studio 12.0\vc\include\vector(945) : see reference to function template instantiation 'void std::vector<std::tuple<unsigned int,unsigned int,unsigned int>,std::allocator<_Ty>>::_Tidy(void)' being compiled …