※ 引述《flarehunter (Range)》之銘言：
: 在constructor那邊
: 大小有預設n = 0
: 這是代表把_capacity設為0嗎?
: 那如果後面要變大
: 乘以二還是0耶…
: 是不是要改成 預設n = 1啊
: 然後 要不要寫個解構子把 _data 的空間free掉?
Good question. 題目沒講清楚.
這是參照 STL vector 的規格, 也就是說 array 的 default constructor will set
both the size and capacity to 0. When the first element is added in
(pushed back), the capacity will become 1 or 2, depending on the platform,
and the size will be 1, of course.
You can decide the new capacity = 1 or 2, or use debugger to see how vector
is handled in your computer.
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