作者查詢 / shadow0326
作者 shadow0326 在 PTT [ C_and_CPP ] 看板的留言(推文), 共825則
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收起看板(593)
9F推: http://busybox.net/~landley/c99-draft.html#6.3.1.308/27 16:49
10F→: 我想應該是根據6.3.1.3#208/27 16:50
20F推: 目前用過的第三方lib c++通常都客戶自己new/delete08/15 15:42
21F→: c通常都提供free_xxx release_xxx uninit_xxx的API08/15 15:42
1F→: edge_descriptor invalidate了吧08/12 12:35
7F→: 原本的edge_descriptor可能會在那個圖被改變時失效08/12 13:44
8F→: 就像iterator會在容器被改變時失效一樣08/12 13:45
9F→: 每次呼叫add_edge 之前所存的descriptor就失效了 因為08/12 13:46
10F→: 圖已經改變了08/12 13:46
11F→: 用descriptor invalidation去估狗看看吧08/12 13:50
12F→: 另外我雖然不熟boost graph 但是我想他一定有辦法去08/12 13:50
13F→: iterate一個圖的edge的 應該不需要自己存08/12 13:51
18F推: 只有一個圖是指你的sample code的Nl改成1嗎?08/13 13:56
20F→: 有code可以參考嗎?08/13 14:42
23F推: 噢 我看了一下文件發現add_edge沒有失效問題 抱歉誤導08/13 15:23
24F→: 問題應該是出在push_back時的copy動作沒錯08/13 15:24
25F→: push_back的意義是複製一份物件 所以原圖和容器內的圖08/13 15:24
26F→: 是不同的實體，descriptor指向原圖而非容器內的圖08/13 15:25
27F→: http://ideone.com/JKro7u 稍微改一下 你看看行不行08/13 15:32
31F→: 可以長也沒關係 先insert圖 再更新容器內那張圖08/13 15:58
32F→: 不過前提是先reserve足夠空間給容器 避免隱性的copy08/13 15:59
4F推:refactor exception的那段太酷了06/25 15:09
1F→:用到什麼就inc什麼就對了 標準庫實作互相參考很常見04/29 17:13
22F推:如果input和output階段分得很清楚 用vector較好04/10 13:32
23F→:如果input和output動作非常混雜 用set比較好04/10 13:33
51F→:if裡面不是bug的=超常見的吧03/03 11:39
5F→:我現在才知道A ab=B()原來可編譯而且Wall也沒警告...02/05 11:46
4F→:講local static就和講public private一樣意味不明01/17 14:20
3F→:你的p最後移到中間了 當然只印中間以後的值01/15 00:51