t*******o
发帖数: 1464 | 1 刚才看了一下C字头的，发现中概被delete的远多于add的。
Add CALIPER LIFE SCIENCES CALP United States Health Care
Add CALIX INC CALX United States Technology
Delete CALLIDUS SOFTWARE INC CALD United States Technology
Add CALLON PETROLEUM CO CPE United States Energy
Add CAMAC ENERGY INC CAK United States Energy
Add CAMBIUM LEARNING GRP INC ABCD United States Consumer
Discretionary
Delete CAPE BANCORP INC CBNJ United S... 阅读全帖 |
|
N******t
发帖数: 43 | 2 贴代码，如有错误，请私信。
/**
* Implement insert and delete in a trinary tree.
*
*/
public class TrinaryTree {
/**
* define a trinary tree's node
*
*/
static class TreeNode{
public int val; // node's value
public TreeNode left, right, mid; // represent left, right, middle
node
public TreeNode(int v){
this.val = v;
left = null;
right = null;
mid = null;
}
}
TreeNode root;
public TrinaryTre... 阅读全帖 |
|
发帖数: 1 | 3 Congress Warns Donald Trump: Stop Deleting Your Tweets
WASHINGTON ― When President Donald Trump or a member of his staff deletes a
tweet, they may be violating federal law, two top congressmen warned the
White House this week.
Reps. Jason Chaffetz (R-Utah) and Elijah Cummings (D-Md.), chairman and
ranking member of the House Oversight Committee, sent a letter to White
House counsel Don McGahn on Wednesday expressing concerns about the Trump
administration’s record keeping habits and its nontrans... 阅读全帖 |
|
s****A
发帖数: 80 | 4 我的理解是
1. new 开辟出来的内存必须由delete来回收
但是所delete的指针变量并不一定是new时所使用的指针变量，只要是指相同一个内存
地址的指针变量就可以
比如 int *a=new int;
a=100;
int * b=a;
delete b;
这样就不会造成内存泄露了，并不一定要delete a;对吗？
2.在用new开辟数组所需内存的时候，编译器是不是还要记住指针变量所对应的开辟内
存大小
比如 int *a=new int[100];
... ...
delete [] a;
这里a存放的只是一个内存地址，但是应该有某种机制记住了a之后是一片大小为100的
内存区域，否则就没办法用delete语句收回这些内存了吧
但是在这种情况下，是否就只能通过delete [] a来释放了？不能像 1 中的情况那样用
别的指针变量释放这片内存了？
谢谢！ |
|
h*****g
发帖数: 944 | 5 convert a random array to BST: o(nlogn)
insertion: o(logn)
deletion: o(logn)
貌似deletion有三种情况，
1 Deleting a leaf (node with no children): Deleting a leaf is easy, as we
can simply remove it from the tree.
2 Deleting a node with one child: Remove the node and replace it with its
child.
3 Deleting a node with two children:
这三种情况不都是O(logn)吧？ |
|
y*****3
发帖数: 451 | 6 在网上看到一个，觉得有错误。感觉如果按照他这个做，如果要delete的碰巧是middle
child，而那个middle child又有孩子，结果就不对了。
public TrinaryNode delete(key, node) {
if (node == null) {
throw new RuntimeException();
} else if (key < node.key) {
node.left = delete(key, node.left);
} else if (key > node.key) {
node.right = delete(key, node.right);
} else {
if (node.middle != null) {
node.middle = delete(key, node.middle);
} else if (node.right != null) {
node.key = findMin(node.rig... 阅读全帖 |
|
x*********h
发帖数: 25 | 7 Hi, I have a question about operator delete, dtor.
define a class like below,
class TestDelete{
public:
virtual ~TestDelete(){
std::cout << "TestDelete::~TestDelete" << std::endl;
}
void operator delete (void* p){
std::cout << "TestDelete::operator delete()" << std::endl;
}
// void operator delete[] (void* p){
// std::cout << "TestDelete::operator delete()" << std::endl;
// }
};
then, write statements like :
TestDelete* p = NULL;
delete p;
I found |
|
c**a
发帖数: 316 | 8 【 以下文字转载自 Quant 讨论区 】
发信人: ccca (cc), 信区: Quant
标 题: 请教 C++的一个困惑 (operator delete)
发信站: BBS 未名空间站 (Fri Mar 21 20:59:41 2008), 转信
请看如下代码， 其结果是输出 4， 既调用了 A的operator delete(...)
由于 C++ 只能用 reference 和 pointer 实现 polymorphism.
但是如果 用pointer的话， 却无法调用正确的delete 释放内存。
个人认为问题很严重！（operator delete无法声明为 virtual）。
请牛人指点。
class A
{
public:
void operator delete(void* p, size_t size){cout << size;};
private:
int k;
};
class B:public A
{
public:
void operator delete(void* p, size |
|
b***y
发帖数: 2799 | 9 ☆─────────────────────────────────────☆
julietzn (juliet) 于 (Thu Feb 21 22:51:54 2008) 提到:
面试的时候被问到的
int * p = new int[10];
delete [] p；
complier 如何实现 delete [], 他们怎么知道有10个int 需要 delete.
接下来是一个衍生出来的问题：
class Base{};
class Derived : public Base{};
Base *p;
Derived q;
p = &q;
如果delet p, 实际上应该delet p所指向的 object q.
那么这个delet 需要两步实现：
1. call the destruction function of q // There is no problem, if the
destruction of q is virtual.
2. free the memory of q. //question: complier 是如何知道要release 多少memo |
|
x******0
发帖数: 1025 | 10 这个和我上学期考试题目一样啊
//recursively remove ALL nodes with value
PINTLISTNODE RemoveAll1(PINTLISTNODE pHead, int iRemoveValue)
{
if (pHead == NULL)
{
return NULL;
}
if (pHead->iValue == iRemoveValue)
{
PINTLISTNODE pToDelete = pHead;
pHead = pHead->pNext;
delete pToDelete;
return RemoveAll1(pHead, iRemoveValue);
}
else
{
pHead->pNext = RemoveAll1(pHead->pNext, iRemoveValue);
return pHead;
}
}
//use a dummyHead
PI... 阅读全帖 |
|
w**********k
发帖数: 1135 | 11
28944 yhf Nov 10 ● Range delete 1-100 on AHU
28945 yhf Nov 10 ● Range delete 1-1000 on AHU
28946 yhf Nov 10 ● Range delete 37-39 on AHU
28947 yhf Nov 10 ● Range delete 38-119 on AHU
28948 yhf Nov 10 ● Range delete 82-988 on AHU
这是你的删除记录，如果是误删，希望到sysop板说明一下，
我们会恢复。 |
|
q**j
发帖数: 10612 | 12 【 以下文字转载自 Software 讨论区,原文如下 】
发信人: qqzj (atrest), 信区: Software
标 题: deletion in asp.net
发信站: The unknown SPACE (Wed Jul 23 14:42:25 2003) WWW-POST
i am using asp.net to creat a web form. and i have a function that user can
delete from SQL server database.
my question is: now if the user clicks delete, and a window that need to be
confirmed popping up. if the user cancelled the deleting, the deletion will
still work. but i need to cancel this event if the user clicks "cancel".
please tell me how |
|
o******r
发帖数: 259 | 13 发现跟Dao没有关系，
试着直接用ODBC，用excel file做data source
update还是可以，
但delete 一条记录时，报错
“Deleting data in a linked table is not supported by this ISAM.
State:S1000,Native:-5410,Origin:[Microsoft][ODBC Excel Driver]”
Microsoft网站上，同样的报错出现在delete csv database
If you are deleting records:
Database Results Error
"Description: [Microsoft][ODBC Text Driver] Deleting data in a linked tab
le is not supported by this ISAM.
Number: -2147467259 (0x80004005)
Source: Microsoft OLE DB Provider for ODBC Drivers"
解释是：
The OD |
|
y*******g
发帖数: 6599 | 14 msdn
The global operator delete function, if declared, takes a single argument
of type void *, which contains a pointer to the object to deallocate. The
return type is void (operator delete cannot return a value). Two forms exist
for class-member operator delete functions:
void operator delete( void * );
void operator delete( void *, size_t ); |
|
c*******h
发帖数: 1096 | 15 考虑如下例子
int *a = new int [10];
int *b = new int [20];
delete [] a;
a = b;
delete [] a;
第一次 delete a 的时侯系统自然知道要回收 10 个 int 大小的内存
但第二次 delete a 的时侯系统怎么知道要回收 20 个 int 大小的内存？
如果不是用 new 和 delete 而是用 malloc 和 free，会不会又不一样？ |
|
l******9
发帖数: 579 | 16 【 以下文字转载自 JobHunting 讨论区 】
发信人: light009 (light009), 信区: JobHunting
标 题: delete sheets from Excel workbook in C#
发信站: BBS 未名空间站 (Fri May 22 14:08:38 2015, 美东)
I need to delete some sheets from an Excel workbook in C#.
But, my code does not work.
// **aDeleteList** hold the sheets that need to be deleted from the
workbook wbk
static void delete_sht(ref MsExcel.Workbook wbk, List
aDeleteList)
{
MsExcel.Sheets my_st = wbk.Sheets;
foreach (MsExcel.Worksheet s in ... 阅读全帖 |
|
l******9
发帖数: 579 | 17 【 以下文字转载自 JobHunting 讨论区 】
发信人: light009 (light009), 信区: JobHunting
标 题: delete sheets from Excel workbook in C#
发信站: BBS 未名空间站 (Fri May 22 14:08:38 2015, 美东)
I need to delete some sheets from an Excel workbook in C#.
But, my code does not work.
// **aDeleteList** hold the sheets that need to be deleted from the
workbook wbk
static void delete_sht(ref MsExcel.Workbook wbk, List
aDeleteList)
{
MsExcel.Sheets my_st = wbk.Sheets;
foreach (MsExcel.Worksheet s in ... 阅读全帖 |
|
d*****n
发帖数: 754 | 18 真外行。就算删了，twitter也有记录。
[在 gcn (gcn) 的大作中提到：]
:Congress Warns Donald Trump: Stop Deleting Your Tweets
:WASHINGTON ― When President Donald Trump or a member of his staff deletes
a tweet, they may be violating federal law, two top congressmen warned the
:White House this week.
:Reps. Jason Chaffetz (R-Utah) and Elijah Cummings (D-Md.), chairman and
:ranking member of the House Oversight Committee, sent a letter to White
:House counsel Don McGahn on Wednesday expressing concerns about the Trump
:adm... 阅读全帖 |
|
c*****g
发帖数: 33 | 19 Given a linked list and a value, delete all the nodes having the value equal
to that value. (Use C++)
class Node
{
public:
int data;
Node* next;
};
void f(int a, Node* head)
{
while(head != NULL)
{
if(head->data == a) // if match, delete the node
{
Node* temp = head;
head->next = head->next->next;
delete temp;
}
head = head->next;
}
}
请问if条件下的作法对吗? 一般来说需要delete那个node吗? (若用java好像就不用)
如果把Node* temp = head;在whil... 阅读全帖 |
|
w****a
发帖数: 710 | 20 1. 你可以delete b，不一定要delete a。但是记得delete b之后别调用a了。不然野指
针访问就够你喝一壶的。
2. 也可以通过别的指针变量去delete。 |
|
a******e
发帖数: 124 | 21 可以在main函数里delete掉，或者建一个新的function专门delete dynamically
located pointer吧.
如下例
http://www.codeproject.com/Articles/21909/Introduction-to-dynam
template
T **AllocateDynamicArray( int nRows, int nCols)
{
T **dynamicArray;
dynamicArray = new T*[nRows];
for( int i = 0 ; i < nRows ; i++ )
dynamicArray[i] = new T [nCols];
return dynamicArray;
}
template
void FreeDynamicArray(T** dArray)
{
delete [] *dArray;
delete [] dArray;
}
int main()... 阅读全帖 |
|
l******9
发帖数: 579 | 22 I need to delete some sheets from an Excel workbook in C#.
But, my code does not work.
// **aDeleteList** hold the sheets that need to be deleted from the
workbook wbk
static void delete_sht(ref MsExcel.Workbook wbk, List
aDeleteList)
{
MsExcel.Sheets my_st = wbk.Sheets;
foreach (MsExcel.Worksheet s in my_st)
{
if (aDeleteList.Contains(s.Name))
s.Delete();
int t1 = my_st.Count;
int t = wbk.Sheets.Coun... 阅读全帖 |
|
E********n
发帖数: 14662 | 23 never mentioned it to me or never be deleted days ago.
if 格式不对, i am ok to be blocked for days to pay the penalty.
but why it was not deleted days ago? just when needing it, it's deleted?
the administrator who just deleted it should also pay for his mistake, am i
right? |
|
a****g
发帖数: 9 | 24 我把image存在sql server 里，存的时候没有问题。但当我用ASP页想DELETE image
record 的时候, 遇到麻烦。症状是：
1. DELETE 小的 Image (<50k), 没有问题。
2 当image超过100k后，我就DELETE不掉了。SQL server 就死了。我用的方法是在ASP页
内生成一个SQL command, send 到 SQL server.
如果我把同样的 SQL command 直接在 SQLserver里 run, 就可以DELETE掉。
是不是我的那里设支不对？请高手给点意见。 |
|
a***h
发帖数: 29 | 25 how to particially delete record in sql server
if there are 1000 pieces of record in a table, how can i
accomplish the following tasks:
1. delete record 1 to record 500.
2. delete record 500 to record 1000.
3. delete record 300 to record 500. |
|
a***h
发帖数: 29 | 26 how to particially delete record in sql server
if there are 1000 pieces of record in a table, how can i
accomplish the following tasks:
1. delete record 1 to record 500.
2. delete record 500 to record 1000.
3. delete record 300 to record 500. |
|
h****r
发帖数: 2056 | 27 Professor's requirements: Create a database trigger that stores deleted
customer records in an archive table. The archive table should also include
the DATE the customer record was deleted from the customer table.
I know how to create the trigger,but don't know how to include the date the
customer record was deleted. Anyone can give me some hlep? Thanks
BEFORE DELETE ON borrower_t
FOR EACH ROW
BEGIN
INSERT INTO borrowerarchive
VALUES(:Old.borrower_ssn, :Old.Borrower_Firstname, :Old.Borrower_Last |
|
b***y
发帖数: 740 | 28 http://www.engadget.com/2009/10/12/snow-leopard-guest-account-bug-deleting-user-files-terrorizin/
Think your Snow Leopard woes are finally over? Don't go logging into that
Guest account, then. A flurry of reports have surfaced around the web
explaining that even an accidental login to one's Guest account within Snow
Leopard could lead to mass deletion of all user files on the primary account
, and when we say "mass deletion," we mean "mass deletion." The problem goes
something like this: if one |
|
d*******d
发帖数: 2050 | 29 我猜测啊，在你有virtual dtor的情况时，你delete 的时候，要先走dtor,然后是clas
s里面的delete,可是你delete了一个null,编译器无法从null找到vtable然后fetch出dt
or，所以直接就完了，没有走下去。
而你注释掉virtual dtor后，走的是default dtor,default dtor不用走vtable,所以总
是call了，default dtor没做什么，但是又接着call delete。 |
|
s**********b
发帖数: 7 | 30 这个仍然是base class, 所以有没有virtual效果一样，跟virtual没关系
c++处理delete null pointer,是直接忽略的（C是crash)，所以当你自己写dtor
系统会调用你的dtor，系统会知道你这个是null ptr，所以直接忽略delete p;
如果你不自己写dtor,系统掉methods是直接class methods存的address+offset找
methods,所以delete被当作普通methods调用，就会不会忽略delete call. （我不确定
，不过好象解释的通）
clas
dt |
|
b***y
发帖数: 2799 | 31 ☆─────────────────────────────────────☆
noid (DoIneedit?) 于 (Wed Jun 18 08:14:09 2008) 提到:
curious what happens to the following code. It passes compile and is runable.
unsigned char* storage;
storage = 0;
delete[] storage;
☆─────────────────────────────────────☆
kkff (克复) 于 (Wed Jun 18 12:18:55 2008) 提到:
delete [] 0;
or
delete 0;
are valid and basically do nothing. So you don't have to check if storage is
0 before apply the delete operator to it.
☆───────────────────────── |
|
a*****t
发帖数: 30 | 32 class Airplane { // same as before, except there's
public: // now a decl. for operator delete
...
static void operator delete(void *deadObject,
size_t size);
};
// operator delete is passed a memory chunk, which,
// if it's the right size, is just added to the
// front of the list of free chunks
void Airplane::operator delete(void *deadObject,
size_t size)<--------------------
{
if (deadObject == 0) return; |
|
t****t
发帖数: 6806 | 33 use ::operator delete() to delete void*, if you used ::operator new to
allocate it.
use free() to delete void*, if you used malloc to allocate it.
how did you get the memory? if you overload operator delete, you usually
have to overload operator new as well. in most cases they have to appear
together.
if you don't know what you are doing, better leave them alone. it's very
easy to mess up.
*. |
|
y********o
发帖数: 2565 | 34 XP Professional with Service Pack 2.
本来如果不加入一个domain的话，登录界面是这样的：
John Doe
Richard Doe
Jane Doe
登录不需要按ctrl-alt-delete。点名字输入密码即可，对不对？
前不久用VPN加入了公司的domain, 登录要求摁ctrl-alt-delete。很正常。
现在我想取消这个ctrl-alt-delelte的登录政策，已经在local user/group policy当中
禁用ctrl-alt-delete了，也脱离了公司的domain, 重启电脑后，还是要求要摁ctrl-al
t-delete才能登录。
难道就不能返回先前那种模式吗？ |
|
i*********0
发帖数: 915 | 35 我做的gene (A)在胚胎早期deletion导致lethal phenotype,我想看看在胚胎发育中期
或者晚期 (从15.5开始)deletion, A
gene 对发育的影响. 我的一个line的老鼠是A gene flox/flox, ER-cre+ 的,我想用
OHT 或者4-OHT 在E15.5的时候诱导
A gene deletion, 目前考虑两种方法:一是做ip注射好,二是是通过drinking water.
我只看过一些在成体做Ip 的paper,但是
用的volume都比较大,我也不想给怀孕老鼠更多的stress. drinking water倒是没有伤
害,但是我担心deletion的效率不高.
不知道那位有更好的办法,或者comment一下我列举的.
谢谢! |
|
c**g
发帖数: 274 | 36 不知道现在的delete版什么样子(据说是所有版被delete的文章都在那),因为
没见过.不过我觉得应该把delete版分开--每个版都有自己的一个delete版,而
版主可以只读这个版,这样一旦误操作什么的也容易恢复,也可以减少版主的
工作失误. |
|
c**g
发帖数: 274 | 37 【 以下文字转载自 NewBBS 讨论区 】
【 原文由 cang 所发表 】
不知道现在的delete版什么样子(据说是所有版被delete的文章都在那),因为
没见过.不过我觉得应该把delete版分开--每个版都有自己的一个delete版,而
版主可以只读这个版,这样一旦误操作什么的也容易恢复,也可以减少版主的
工作失误. |
|
w*******e
发帖数: 269 | 38 什麼是delete前行？是要delete 1000行 codes嗎？ |
|
r******l
发帖数: 1118 | 39 怎样可以一次delete家页里多个收藏，我有很多收藏在家页里，只能一个一个的delete
,谁知道怎
样可以一次delete家页里多个收藏啊？
先谢谢啦。 |
|
c******f
发帖数: 2144 | 40 看到这个：
vector svec(10);
vector *pv1 = &svec;
delete pv1; --这里可以delete么？不是说只有new过的指针才能delete么？ |
|
p*****2
发帖数: 21240 | 41 我写了一个
def merge(node1, node2):
if node1==None or node2==None:
return node1 if node2==None else node2
node1.right=merge(node2,node1.right)
return node1
def delete(root, node):
if root==None:
return None
elif root==node:
return merge(node.left,node.right)
else:
root.left=delete(root.left,node)
root.right=delete(root.right,node)
return root |
|
c*****g
发帖数: 33 | 42 Thanks for correction. 我改了一些 先假设a数值不发生在第一个node, 想请问这样
的delete node方式是不是正确的
void f(int a, Node* head)
{
while(head->next != NULL)
{
if(head->next->data == a) // if match, delete the node
{
Node* temp = head->next;
head->next = head->next->next;
delete temp;
}
head = head->next;
}
} |
|
b**j
发帖数: 20742 | 43 i deleted this because it sounds like MLM. if you post talks about more
concrete issues i'll delete this just like i delete those from china looking
for ebayers to sell fake nike, coach etc.
MLM marketing is not allowed on this board. it's always been in the rules i posted.
not something that i came up with yesterday
further violations will result in loss of right to post.
thanks |
|
F*P
发帖数: 524 | 44 本故事纯属虚构，切勿对号入座。
诸葛云又看到小芥末上线了，可是他的状态仍然是隐身。原来已经有一个礼拜了，
小芥末没有搭理他了。也许是她太忙 了吧，也许是她生气了吧，也许她的QQ被监
视起来了。。。诸葛云独自胡乱琢磨着，女人的心思真是千变万化啊。看在 她没有
把他踢到黑名单的份上，诸葛云接受了。点根烟，吐个烟圈。
一周去看她一次，上上她的空间，这样也许就刚刚好吧。诸葛云自以为是的想着。难
道不对么？大家都没鸭梨，做朋友就 好。哪天她觉得累了，就可以把他拖到黑名单。
眼不见心不静。只是别忘了发条微信，和隐身的朋友说句拜拜。
走进她的空间，熟悉的笑容扑面而来。把诸葛云的烟呛到了。一个女生笑起来若是有
了自信与幸福的味道，那么就请WSN们退避三舍吧。人家可是有主的花朵了。诸葛云手
上的烟就剩那么个小烟头了。孤单的就只剩下心碎的求饶了。
CD里放着《魔鬼中的天使》，一首疗伤情歌。配合一包半的白色万宝路，诸葛云开
始运功练起洗髓经来。说来也奇，才练了一时半刻，顿觉脑中空无一物，难道这洗髓
经已经被诸葛云练到了最高的第九层？唤作洗髓经番外篇，DELETE大法。可以删除脑
中任何一段想要DELETE的... 阅读全帖 |
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j*d
发帖数: 488 | 45 Hi, I am new to sony cameras. When I connect the camera with USB to computer
, i only see copy options, but no delete option to allow delete images on
the SD card easily. So what is the way to do that on RX10? have to delete
on camera one by one? thanks |
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o******r
发帖数: 259 | 46 用CDaoDatabase打开Excel 文件，
update记录都可以，
偏偏delete就出exception,
DAO Call Failed.
m_pDAODatabase->Execute( V_BSTR(&var), COleVariant((long)nOptions))
In file daocore.cpp on line 1544
scode = 800A0E21
Error Code = 3617
Source = DAO.Database
Description = Deleting data in a linked table is not supported by this ISAM.
难道设计这个接口的人就从来没想过有可能要delete一条记录吗？
数据记录都放在一个Excel文件里，
在VC里用CDaoDatabase/CDaoRecordset去查询，更新
有什么办法吗？ |
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x***e
发帖数: 2449 | 47 delete is faster than mark to be deleted(update)
it really depends on how much data total and how much data need to be
deleted
and idnex.
if you have some more detail, maybe we can take a look. |
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f*****e
发帖数: 5177 | 48 Very simple question: when delete a record in SQL server, what are the locks
applied? My understanding is IX -> X. I am not sure if there is S lock
applied before IX. In another word, when delete a record, to reduce chance
of deadlock and improve performance, should I check if the record exists
first? Or should I call delete command directly and check if the affected
rows is 0? |
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b**a
发帖数: 1118 | 49 No. This is to delete 10000 each batch and keep deleting untill every
records that qualified get deleted. |
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b**a
发帖数: 1118 | 50 No. This is to delete 10000 each batch and keep deleting untill every
records that qualified get deleted. |
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