C++ 模板类

概述

	1. 模板类的声明和定义均写在.h内
	2. 类格式
			template<typename T>
			class 类名 {
			};
	3. 成员(变量， 方法)格式
			template<typename T>
			类名<T>::方法名(){
			}

示例

1. 定义

    #ifndef THREAD_SAFE_STRING_H_
    #define THREAD_SAFE_STRING_H_
    
    #include <string>
    using namespace std;
    
    template<typename LOCKER>
    class ThreadSafeString : public string
    {
    public:
        ThreadSafeString(const char *data);
        ~ThreadSafeString();
    
    public:
        int length();
        void setString(const char *data);
        string getString();
    private:
        string m_string;
        LOCKER m_locker;
        int    iNum;
    };
    
    template<typename LOCKER>
    ThreadSafeString<LOCKER>::ThreadSafeString(const char *data)
        : m_string(data)
    {
        iNum = m_string.length();
    }
    
    template<typename LOCKER>
    ThreadSafeString<LOCKER>::~ThreadSafeString()
    {
    
    }
    
    template<typename LOCKER>
    int ThreadSafeString<LOCKER>::length()
    {
        m_locker.lock();
        int len = m_string.length();
        m_locker.unlock();
    
        return len;
    }
    
    template<typename LOCKER>
    void ThreadSafeString<LOCKER>::setString(const char *data)
    {
        m_locker.lock();
        m_string = data;
        m_locker.unlock();
    }
    
    template<typename LOCKER>
    string ThreadSafeString<LOCKER>::getString()
    {
        m_locker.lock();
        auto tmpStr = m_string;
        m_locker.unlock();
        return tmpStr;
    }
    
    #endif//THREAD_SAFE_STRING_H_
   

2. 使用

   	//myLocker
   	ThreadSafeString<myLocker> safeString("hello world!");
   	safeString.length();
   	.........