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C++模板笔记七:类模板成员函数类外实现;

往复随安_5bb5 2022-01-28 阅读 167

类模板中的成员函数在类外实现。

通常情况:类内实现。

template<typename T1, typename T2>
class Person
{
public:
	Person(T1 name, T2 age)
	{
		this->m_Name = name;
		this->m_Age = age;
	}

	void showPerson()
	{
		cout << "姓名:" << this->m_Name << ", 年龄:" << this->m_Age << endl;
	}

private:
	T1 m_Name;
	T2 m_Age;
};

类内声明;类外实现:

template<typename T1, typename T2>
class Person
{
public:

	Person(T1 name, T2 age);
	void showPerson();

private:
	T1 m_Name;
	T2 m_Age;
};

// 构造函数类外实现。
template<typename T1, typename T2>
Person<T1, T2>::Person(T1 name, T2 age)
{
	this->m_Name = name;
	this->m_Age = age;
}

// 普通成员函数类外实现。
template<typename T1, typename T2>
void Person<T1, T2>::showPerson()
{
	cout << "姓名:" << this->m_Name << ", 年龄:" << this->m_Age << endl;
}

有两个地方要注意:

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