作者查詢 / wulouise
作者 wulouise 在 PTT [ C_and_CPP ] 看板的留言(推文), 共174則
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12F推: sorry我沒看code qq01/24 11:23
1F推: gcc支援copy elision很久了,dev c++不要用 godbolt方便01/21 23:12
2F→: godbolt assembly都直接展開給你看,不用自己寫dtor測試01/21 23:13
14F推: cmp2有UB嗎?兩邊除了印的不一樣有差嗎?01/18 00:12
1F推: fd開了就要自己關,如果不持續跑可能就還好12/05 23:52
15F推: 應該會先跳too many open files吧12/10 10:41
6F推: GetProcAddr好像沒寫完整少括號11/27 21:53
7F推: OtherObj* GetOtnerObj(Test* pTest)是不是打錯?11/27 22:28
49F→: c++ declaration用法跟其他地方用法不一樣很容易搞混11/14 15:16
4F→: 你只是寫了a=5啊11/11 20:58
5F→: 你是說設值給std::function?通常是不行的11/11 21:00
13F→: 你是設給returned ref而不是function 不要搞混了,f(a)11/12 10:19
14F→: 是呼叫function f並取得回傳的ref11/12 10:19
15F→: 給function設值是f = xxx,但是要看你想做什麼11/12 10:20
5F→: return int的話那是暫時變數,你給暫時變數值不存他,跟11/12 10:22
6F→: 沒做事一樣,下一秒returned int就消失了11/12 10:22
7F→: 建議你找一本書看,這些範例從都不是給function值11/12 10:22
20F推: USECASE列出來吧..11/10 10:00
29F推: 每個derived都要不同實作還是大家都要一樣的?11/10 11:42
30F→: 我覺得你要的是free function在不同namespace11/10 11:43
53F推: 樓上完美描述問問題應該先從context &use case開始11/12 10:17
37F推: 不懂你說的忘記加是什麼情況,多了cpmpute忘記補檢查?10/31 12:32
38F→: general就是所有compute都有check,只是chk可以noop10/31 12:33
39F→: 或所有compute跟check都當做callback執行,繼承沒有必要10/31 12:35
40F→: 如果對效能有需求,那看情況決定要不要generalize10/31 12:36
41F→: 重點是你的抽象化可以用在別的地方嗎?好debug嗎?10/31 12:38
9F推: 先把最後兩行用什麼換行符號列出來10/28 00:27
23F推: use case不合理,什麼情況要swap不同type的資料?你要不10/15 15:39
24F→: 要貼一下書名給大家看,有可能你的書太舊或寫得不好10/15 15:39
25F→: 最早c只有char代表8bits type,後來才有uint8_t10/15 15:42
40F推: byte by byte copy不一定比較快,沒必要自己寫swap10/15 20:44