CODEWITHSUNDEEP
c++templatestemplate-specialization
Loay
Loay

Reputation: 601

template function with no object arguments specialization

I'd like to specialize a template function to take non-pointer types and if in case it gets a pointer I'd like to call it without the *.

I'm wondering if there's a way without using std::remove_pointer.

for example I'd like to do something like this:

template<typename T>
void setName() {
    name = __PRETTY_FUNCTION__;
}

template<typename T>
void setName<T*>() {
    setName<T>();
}

name is defined as a private data member.

Upvotes: 1

Views: 203

Answers (1)

Jan Korous
Jan Korous

Reputation: 666

Your idea is correct but partial function template specialization is not allowed in C++. Fortuately partial class template specialization is allowed so you can use static method workaround (see specialization of setName_impl below) and if needed function template wrapper (see setName() below):

template<typename T>
struct setName_impl{ 
    static void exec() { }
};

template<typename T>
struct setName_impl<T*>{ 
    static void exec() {
        setName<T>::exec();
    }
};

template<typename T>
void setName() { 
    setName_impl<T>::exec(); 
}

Upvotes: 3

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