[問題] deque::front() 的回傳型別
開發平台(Platform): BCB2009
問題(Question)：
deque::front() 回傳的型別？
程式碼(Code)：(請善用置底文網頁, 記得排版)
這段 code 是從 deque 節錄部份出來的
template<class _Ty, class _Ax>
class deque : public _Deque_val<_Ty, _Ax>
{
typedef _Deque_val<_Ty, _Ax> _Mybase;
typedef typename _Mybase::_Alty _Alloc;
typedef typename _Alloc::reference _Reft;
typedef _Reft reference;
...
reference front()
{
return (*begin());
}
...
};
小弟對於這一段程式碼有幾個問題
1. deque::front 回傳的是什麼東西？
2. reference 代表什麼意思？
3. 為什麼這段程式碼不是寫 _Ty& front() {}
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