[問題] short & const reference
開發平台(Platform): VC++
問題(Question):
1.寫程式的時候很少看到有人使用short
但很多時候其實值域根本就不需要這麼大
如果使用short的話理論上可以省去一半的空間
但為何很少看到呢?
是因為直覺就想到要使用int
還是背後有什麼隱藏的風險?
2.一般我們在傳入參數時若不希望參數被更動
通常會使用const reference
EX. void func(const CMyClass& myclass);
但如果傳入的參數是一般的既定型別,像是int,float...呢?
還有需要加reference嗎?
void func(const int& a);
兩個小問題
請版友解惑
謝謝~
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 59.112.212.14
→
08/16 22:36, , 1F
08/16 22:36, 1F
→
08/16 22:38, , 2F
08/16 22:38, 2F
→
08/16 22:41, , 3F
08/16 22:41, 3F
推
08/16 22:45, , 4F
08/16 22:45, 4F
→
08/16 22:46, , 5F
08/16 22:46, 5F
推
08/16 22:47, , 6F
08/16 22:47, 6F
→
08/16 22:49, , 7F
08/16 22:49, 7F
→
08/16 22:50, , 8F
08/16 22:50, 8F
→
08/16 22:52, , 9F
08/16 22:52, 9F
推
08/16 22:53, , 10F
08/16 22:53, 10F
→
08/16 22:53, , 11F
08/16 22:53, 11F
→
08/16 23:09, , 12F
08/16 23:09, 12F
推
08/16 23:11, , 13F
08/16 23:11, 13F
→
08/16 23:49, , 14F
08/16 23:49, 14F
推
08/16 23:56, , 15F
08/16 23:56, 15F
→
08/17 00:08, , 16F
08/17 00:08, 16F
→
08/17 00:10, , 17F
08/17 00:10, 17F
→
08/17 00:11, , 18F
08/17 00:11, 18F
→
08/17 00:23, , 19F
08/17 00:23, 19F
→
08/17 00:24, , 20F
08/17 00:24, 20F
→
08/17 00:25, , 21F
08/17 00:25, 21F
推
08/17 00:26, , 22F
08/17 00:26, 22F
推
08/17 14:28, , 23F
08/17 14:28, 23F
推
08/17 15:02, , 24F
08/17 15:02, 24F
C_and_CPP 近期熱門文章
PTT數位生活區 即時熱門文章