" is required What am I doing wrong? template class Binder { public: static ...">
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C ++: for a specialized member, the syntax "template <>" is required

What am I doing wrong?

template<class T>
class Binder
{
public:
    static std::vector< Binder< T >* > all;
    Node<T>* from;
    Node<T>* to;
    Binder(Node<T>* fnode, Node<T>* tonode)
    {
        from = fnode;
        to = tonode;
        Binder<T>::all.push_back(this);
    }
};

std::vector<Binder<int>*> Binder<int>::all = std::vector< Binder<int>* >(); //here it is

Thank.

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1 answer

The definition of a static member is interpreted by the compiler as a specialization (in fact, this is a specialization: you specify an declaration that refers to T = int). This can be fixed by adding template<>before defining.

Defining static members in templates is a bit of a mess: a static member must be defined outside the header, and this is only possible if you already know everything possible Tfor your binder.

, T=int. , Binder<double> -, undefined.

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