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Why should I prefer to use member initialization lists?
...rators
variable = a;
}
};
Here compiler follows following steps to create an object of type MyClass
1. Type’s constructor is called first for “a”.
2. The assignment operator of “Type” is called inside body of MyClass() constructor to assign
variable = a;
And t...
网站伪静态Rewrite重写中文路径时乱码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...管是Apache还是ISAPI_Rewrite，URL均识别的是UTF8编码的。
PS：字符编码转换过程： gbk、gb2312 >> uinicode >> utf8
第一，当在浏览器地址栏输入中文时（浏览器会自动转换）：
1) url路径：utf8 格式
2) url参数：gbk 格式
3) resquest.Q...
How to restart a rails server on Heroku?
...ias by adding it to your .bashrc or .bash_aliases file as described at:
https://askubuntu.com/questions/17536/how-do-i-create-a-permanent-bash-alias and
Creating permanent executable aliases
Then you can just type hra app_name
You can restart a specific remote, e.g. "staging" with:
heroku restart ...
Timer function to provide time in nano seconds using C++
...here is more on QPC
Apparently there is a known issue with QPC on some chipsets, so you may want to make sure you do not have those chipset. Additionally some dual core AMDs may also cause a problem. See the second post by sebbbi, where he states:
QueryPerformanceCounter() and
QueryPerformanc...
Generating matplotlib graphs without a running X server [duplicate]
...ig('temp.png')
You don't have to use the Agg backend, as well. The pdf, ps, svg, agg, cairo, and gdk backends can all be used without an X-server. However, only the Agg backend will be built by default (I think?), so there's a good chance that the other backends may not be enabled on your partic...
Adding event listeners to dynamically added elements using jQuery [duplicate]
...handler, like reference to a function or anonymous function function() {}
PS: if you know the particular node you're adding dynamic elements to - you could specify it instead of document.
share
|
i...
Lost httpd.conf file located apache [closed]
...
Get the path of running Apache
$ ps -ef | grep apache
apache 12846 14590 0 Oct20 ? 00:00:00 /usr/sbin/apache2
Append -V argument to the path
$ /usr/sbin/apache2 -V | grep SERVER_CONFIG_FILE
-D SERVER_CONFIG_FILE="/etc/apache2/apache2.conf"
Re...
STL：accumulate与自定义数据类型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
struct Student
{
string name;
int total;
};
class PS{
public:
int operator()(int t1,const Student& t2)
{
return (t1 + t2.total);
}
};
int main()
{
Student student[3]={
{"hicjiajia",10},
{...
MFC RoundRect、FillRect等函数如何设置颜色 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Rect（FillSolidRect） 颜色：
CPen mypen, *oldpen;
mypen.CreatePen(PS_SOLID, 1, m_clrFrame);
oldpen = pDC->SelectObject(&mypen);
CPoint point(7, 7);
pDC->RoundRect(rectEdit, point);
pDC->SelectObject(oldpen);
CDC中FillRect与FillSolidRect的区别：
在网上找FillRect与F...
Mac升级10.14版本，深度休眠后VNC登陆界面卡住的问题 - 操作系统(内核) - ...
...C登陆界面卡住的问题ssh登陆mac机器，查看login相关进程：ps -elf | grep login一般有4个进程，除了logind及console，其他2个进程使用sudo kill -9杀掉，即可恢复正常登陆。ssh登陆mac机器，查看login相关进程：
ps -elf | grep login
一般有4个...