C++ 容器自定义比较函数

typedef struct 
{
	unsigned int imsiH; /*  */
	unsigned int imsiL; /*  */
}S_ImsiVal;
struct setCmp
{
	bool operator()(const S_ImsiVal &left,const S_ImsiVal &right)const
	{
		if(left.imsiH > right.imsiH)
		{
			return true;
		}
		else if(left.imsiH < right.imsiH)
		{
			return false;
		}
		else
		{
			return (left.imsiL > right.imsiL); /* 若是>=,则重复插入不会失败，但仅保留一份 */
		}
	}
};

std::set<S_ImsiVal, setCmp> m_ImsiSet;

std::pair<std::set<S_ImsiVal, setCmp>::iterator, bool> setPr = m_ImsiSet.insert(sImsiVal);

if(setPr.second)
{
	cout<<"Set Insert Succ"<<endl;
}