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MongoDB inserts float when trying to insert integer
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db.data.update({'name': 'zero'}, {'$set': {'value': NumberInt(0)}})
You can also use NumberLong.
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How can I make gdb save the command history?
...t answer: echo 'set history save on' >> ~/.gdbinit && chmod 600 ~/.gdbinit
Long answer:
Command history is covered in the GDB manual, 22.3 Command History. Create a file $HOME/.gdbinit, change its permissions to 0600, and add the following content:
set history save on
You can se...
What replaces cellpadding, cellspacing, valign, and align in HTML5 tables?
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504
/* cellpadding */
th, td { padding: 5px; }
/* cellspacing */
table { border-collapse: separate...
Remove duplicate entries using a Bash script [duplicate]
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You can sort then uniq:
$ sort -u input.txt
Or use awk:
$ awk '!a[$0]++' input.txt
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c++提取复数的实部和虚部 - C/C++ - 清泛网 - 专注C/C++及内核技术
...arse(COMPLEX * cp, const char * strCplx, const int len)
{
memset(cp, 0, sizeof(COMPLEX));
char buf[MAX_BUF_LEN];
int signPos = -1, // +/-号位置
iPos = -1; // 结尾的i的位置
for (int i = len-1; i >-1; i--)
{
if ('i' == strCplx[i])
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NtMapViewOfSection注入 - C/C++ - 清泛网 - 专注C/C++及内核技术
...件比如像管理员权限或者之类的要求
#define _WIN32_WINNT 0x0400
#include <windows.h>
typedef LONG NTSTATUS, *PNTSTATUS;
#define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0)
typedef enum _SECTION_INHERIT
{
ViewShare = 1,
ViewUnmap = 2
} SECTION_INHERIT;
typedef NTSTATU...
解决:Run-Time Check Failure #0,The value of ESP was not properly sav...
解决:Run-Time Check Failure #0,The value of ESP was not properly saved调用DLL函数,出现错误Run-Time Check Failure #0 - The value of ESP was not properly saved across a function call. ...调用DLL函数,出现错误
Run-Time Check Failure #0 - The value of ESP was not properly saved...
c++ Timer使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...提供实例参考。窗口应用程序使用Timer:
#define TIMER_ID 1000 //定时器ID,可任意。触发后回调函数中用于区别不同的定时器以执行不同的任务
SetTimer(TIMER_ID, 1000 , NULL); //启动定时器,1秒后触发
KillTimer(TIMER_ID); //取消定时器
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windows C++ gbk转为utf-8 - C/C++ - 清泛网 - 专注C/C++及内核技术
...har_2_utf8(const char *m_string,char *utf8_string,int slen) {
int len=0;
wchar_t *w_string;
//char *utf8_string;
//计算由ansi转换为unicode后,unicode编码的长度
len=MultiByteToWideChar(CP_ACP,0,(char *)m_string, -1, NULL,0);//cp_acp指示了转换为unicode编码...
路径 /storage/emulated/0/... 在哪儿? - 更多技术 - 清泛网 - 专注C/C++及内核技术
路径 /storage/emulated/0/... 在哪儿?有时Android下载文件提示保存在 storage emulated 0 ...目录下,但是在文件管理器中根本找不到这个目录,那么这个目录到底在何方呢?有时Android下载文件提示保存在/storage/emulated/0/...目录下,但是在...
