explicit specialization 显式指定

最新推荐文章于 2024-02-14 14:03:42 发布

转载最新推荐文章于 2024-02-14 14:03:42 发布 · 230 阅读

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原文链接：http://www.cnblogs.com/heben/p/9308137.html

本文介绍了一个C++程序示例，展示了如何使用模板函数与显式特化来实现不同类型消息的广播。通过具体的代码实现，读者可以了解到模板函数的基本用法及其针对特定类型进行特化的技巧。

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//explicit specialization 显式指定
#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;

struct msg
{
    string title;
    string content;
};

//非模板函数
void Broadcast(const string& msg);

//模板函数
template <typename T>
void Broadcast(const T& msg);

//explicit specialization 显式指定
template<> void Broadcast<msg>(const msg& msg);    

int main(void)
{
    string simpleMsg = "You just receive one message";
    int msgNum = 73357;
    msg msg;
    msg.title = "Attention";
    msg.content = "Perimeter has been breached, evacuate to section 7.";

    Broadcast(simpleMsg);
    Broadcast(msgNum);
    Broadcast(msg);
    
    cin.get();
    return 0;
}

void Broadcast(const string& msg)
{
    cout << "Notice: " << msg << endl;
}

template <typename T>
void Broadcast(const T& msg)
{
    cout << "No: " << msg << endl;
}

template<> void Broadcast<msg>(const msg& msg)
{
    cout << endl;
    cout << "************************************" << endl;
    cout << "Title: " << msg.title << endl;
    cout << "Content: " << msg.content << endl;
    cout << "************************************" << endl;
}