c++ - 模板模板参数的模板特化

Question

我在 .h 文件中创建了一个带有模板模板参数的模板类:

template<typename Index=Date, typename Value=double, template<typename> 
class Container=std::vector> class FastDataSeries 

然后我尝试将它专门化为 .cpp 文件，以便在其他文件中利用 C++11 的“外部模板”功能，

    template<> class FastDataSeries <Date, double, std::vector >;
    template<> class FastDataSeries <int, double, std::vector >;

然后我收到如下错误信息:

../src/timeseries/FastDataSeries.cpp:13:61: error: type/value mismatch at argument 3 in template parameter list for ‘template class Container> class MarketRisk::FastDataSeries’ template<> class FastDataSeries ; ^ ../src/timeseries/FastDataSeries.cpp:13:61: error: expected a template of type ‘template class Container’, got ‘template class std::vector’ ../src/timeseries/FastDataSeries.cpp:14:60: error: type/value mismatch at argument 3 in template parameter list for ‘template class Container> class MarketRisk::FastDataSeries’ template<> class FastDataSeries ; ^ ../src/timeseries/FastDataSeries.cpp:14:60: error: expected a template of type ‘template class Container’, got ‘template class std::vector’ make: *** [src/timeseries/FastDataSeries.o] Error 1

执行此操作的正确语法是什么？

Answer 1

template<typename>

这与 std::vector 的模板不匹配。您必须提供所有模板参数。

template<class T, class Allocator = std::allocator<T> class Container