模板参数列表太少 - 模板方法的专业化，g ++

Question

将代码从gcc 2.95.3移植到gcc 4.4.2会导致新的编译时错误：

too few template-parameter-lists

下面是该代码的抽象和简化示例。错误发生在标记的行上。

#include <iostream>
using namespace std;

template<class SomeType> class SomeTemplate
{
  public:
    SomeType msg;
    void Func ();
};

void SomeTemplate<long>::Func ()        //--- Error Here ---
{
    cout << "SomeType size: " << sizeof (msg) << endl;
}

int main ()
{
    SomeTemplate<long> MyType;
    MyType.Func ();
}

Answer 1

写

template <>
void SomeTemplate<long>::Func ()        
{
    cout << "SomeType size: " << sizeof (msg) << endl;
}