list-erase

#include<stdio.h>
#include<string>
#include<iostream>
#include<string.h>
#include<list>
typedef std::list<int> CList_int;

void deleteAllList()
{
    CList_int::iterator  it, it1;

    if( m_list.empty() )
    {
        return;
    }

    for( it = m_list.begin(); it != m_list.end();)
    {
        it1 = it;
        it++; //一定要先緩存下一個節點，在erase()本節點，否則segment fault。list可以這樣子，因爲erase知會影響到本節點，
		       //但是vector就不可以，因爲一旦erase一個，其餘節點全部失效了，所以只能先循環delete掉。然後在循環外面用clear()。
        //delete *it1;
        m_list.erase(it1);
    }
}

int main()
{
	CList_int m_list;
	cout << "before push_back the size is : " << m_list.size() << endl;
    for (int i = 0; i < 10; ++i)
	{
		m_list.push_back(10 * i);	
	}
	cout << "after1 push_back the size is : " << m_list.size() << endl;
	
	deleteAllList();
	
	cout << "after2 push_back the size is : " << m_list.size() << endl;
	return 0;
}