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ORACLE 常用日期函数 - ORACLE - 清泛IT论坛,有思想、有深度
ADD_MONTHS函数在输入日期上加上指定的几个月返回一个新的日期。如果给出一负数,返回值日期之前几个月日期。
select add_months(to_date('20150201','yyyymmdd'), -1) from dual
结果:2015/1/1
相应的,加减天数add_days函数是不存在的,直接...
JS卷动效果的调用函数:startmarquee - 建站技术 - 清泛IT论坛,有思想、有深度
...
jquery.sgallery.js
function startmarquee(lh,speed,delay,index) {
/*
函数startmarquee的参数:
lh:文字一次向上滚动的距离或高度;
speed:滚动速度;
delay:滚动停顿的时间间隔;
index:可以使封装后的函数应用于页面当中不同的元素;
...
warning C4996 - c++1y / stl - 清泛IT社区,为创新赋能!
...现这样的警告,是因为VC2005之后的版本中认为CRT中的一组函数如果使用不当,可能会产生诸如内存泄露、缓冲区溢出、非法访问等安全问题。这些函数如:strcpy、strcat等。对于这些问题,VC2005建议使用这些函数的更高级的安全版...
Easy way to prevent Heroku idling?
...ation Available' message. This also works great with Pagoda, and any other sleepy host.
– Jacob Evan Shreve
Jun 18 '13 at 21:21
...
C++ obtaining milliseconds time on Linux — clock() doesn't seem to work properly
...ng mtime, seconds, useconds;
gettimeofday(&start, NULL);
usleep(2000);
gettimeofday(&end, NULL);
seconds = end.tv_sec - start.tv_sec;
useconds = end.tv_usec - start.tv_usec;
mtime = ((seconds) * 1000 + useconds/1000.0) + 0.5;
printf("Elapsed time: %ld mi...
计算统计特征(正态分布)函数及实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
计算统计特征(正态分布)函数及实例main函数:#include "stdafx.h"#include "stdev.h"#include <map>int _tmain(int argc, _TCHAR* argv[]){std::map<int, int> map_...main函数:
#include "stdafx.h"
#include "stdev.h"
#include <map>
int _tmain(int argc, _TCHAR* argv[])
{
std:...
CDC:DrawText 多行显示文本(文本自动换行) - C++ UI - 清泛IT社区,为创新赋能!
...mp;rect, DT_LEFT | DT_TOP | DT_WORDBREAK | DT_EDITCONTROL, m_pfSongTi);
函数原型:
int DrawText(
HDC hDC, // handle to DC
LPCTSTR lpString, // text to draw
int nCount, // text length
&n...
How to stop a goroutine
... close(ch)
return
}
time.Sleep(100 * time.Millisecond)
}
}()
go func() {
time.Sleep(3 * time.Second)
done <- struct{}{}
}()
for i := range ch {
fmt.Println("receive value: ", i)
}
fmt.Prin...
Why does “while(true)” without “Thread.sleep” cause 100% CPU usage on Linux but not on Windows?
...ackoverflow.com%2fquestions%2f14579124%2fwhy-does-whiletrue-without-thread-sleep-cause-100-cpu-usage-on-linux-but%23new-answer', 'question_page');
}
);
Post as a guest
...
How do you run multiple programs in parallel from a bash script?
...ss terminates.
time xargs -P 3 -I {} sh -c 'eval "$1"' - {} <<'EOF'
sleep 1; echo 1
sleep 2; echo 2
sleep 3; echo 3
echo 4
EOF
The output looks something like:
1 # output from 1st command
4 # output from *last* command, which started as soon as the count dropped below 3
2 # output fro...