作者查詢 / jack7775kimo
作者 jack7775kimo 在 PTT [ C_and_CPP ] 看板的留言(推文), 共23則
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2F→: 想想n什麼時候會解構,進而造成一些麻煩06/07 17:49
1F→: 關鍵字:value category04/11 21:24
2F→: cppreference上應該都能找到解釋04/11 21:28
3F→: 以上是回答第二個問題;最初那個obj.f()問題是因為04/11 21:38
4F→: RVO,所以obj.f()會拿到obj.a 不是暫時物件04/11 21:39
5F→: 更正:就算compiler因沒有RVO而拿到暫時物件,也無妨04/11 21:44
20F→: 要看compiler廠商怎麼實作,但一般來說你這樣寫會有04/12 07:53
23F→: 1)更正前述的obj.a應是obj04/12 11:38
24F→: 2) 改code,意圖也跟著變了;原先f是拿到obj自己,新的04/12 11:38
25F→: 是拿到obj的複製體. (但這不影響有沒有RVO)04/12 11:40
31F推: 保重02/28 09:09
18F→: 寫一些std::cout的指令在你自己的constructors中讓09/18 20:51
19F→: 你知道compiler呼叫誰09/18 20:51
3F→: 當你想要做p1+p2+p3這種連加時,p1+p2會產生暫時物件07/20 11:09
4F→: 傳進去的是n的copy,不是n本人10/30 15:11
8F→: pass by value v.s pass by reference10/30 20:04
10F→: 寫auto&&會更好,免得當dirs的容器變成vector<bool>05/20 00:27
11F→: 這種proxy class(會讓dereference得到一個暫時物件)05/20 00:29
12F→: 使得lvalue-reference無法bind to it.05/20 00:30
5F→: Iteration的作法應該就是你說的暴力法? ((1,2)處理05/16 14:54
6F→: 後跟3) Divide and Conquer有用上了嗎? 會變O(logN)05/16 14:54
8F→: 更:D&C應無助益,因為s的最高次方在不同層的時候不同05/16 16:04
5F→: 錯誤訊息裡面為何會有vector<int>?03/29 21:49
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