List链表front()函数运用实例

front
语法:

1	reference front();

front()函数返回一个引用，指向链表的第一个元素。

源代码

/**

* Returns a read/write reference to the data at the first

* element of the %list.

reference

front()

{ return *begin(); }

/**

* Returns a read-only (constant) reference to the data at the first

* element of the %list.

const_reference

front() const

{ return *begin(); }

测试代码

测试结果

9 8 7 6 5 4 3 2 1 0
0