Home  >  Article  >  Backend Development  >  Can Member Functions Be Partially Specialized in Class Templates?

Can Member Functions Be Partially Specialized in Class Templates?

Barbara Streisand
Barbara StreisandOriginal
2024-11-04 18:48:02658browse

Can Member Functions Be Partially Specialized in Class Templates?

Member Function Specialization in Class Templates

Partial specialization, allowing for the modification of specific members in a template class, is not supported for member functions. This means that code like the following will not compile:

<code class="cpp">template <typename T, bool B>
struct X
{
    void Specialized();
};

template <typename T>
void X<T, true>::Specialized()
{
    ...
}

template <typename T>
void X<T, false>::Specialized()
{
    ...
}</code>

Alternative Approaches

  • Explicit Specialization: You can explicitly specialize a member function by providing all template arguments.
<code class="cpp">template <>
void X<int, true>::Specialized()
{
    ...
}</code>
  • Overloaded Functions: Introduce overloaded functions that have access to member variables, functions, and objects of the class.
<code class="cpp">template <typename T, bool B>
struct X
{
    template <bool B>
    static void Specialized(int);
};

template <typename T>
inline void X<T, true>::Specialized(int)
{
    ...
}

template <typename T>
inline void X<T, false>::Specialized(int)
{
    ...
}</code>
  • Separate Class Template: Defer to a separate class template to handle specialization.
<code class="cpp">template <typename T, bool B>
struct SpecializedImpl
{
    static void call()
    {
        ...
    }
};

template <typename T, bool B>
struct X
{
    void Specialized()
    {
        SpecializedImpl<T, B>::call();
    }
};</code>

The above is the detailed content of Can Member Functions Be Partially Specialized in Class Templates?. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn