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c++ 写日志通用类，可设置日志级别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...2d.log"), szLogFile, sys.wYear, sys.wMonth, sys.wDay);
fopen_s(&fp, CW2A(szLogFile), "a+");
if (!fp)
{
TCHAR szOutput[MAX_PATH] = {0};
char errMsg[MAX_PATH] = { 0 };
strerror_s(errMsg, MAX_PATH, errno);
_stprintf_s(szOutput, _T("Open run log file[%s] error: %s\n"), szLogFile, (...
wandbox：C++在线编译项目源码编译及原理剖析 - 开源 & Github - 清泛网 - ...
...入，支持中文，支持不同的gcc及clang版本，支持c++11 ~ c++2a特性。。。
目前该项目是开源的，它的官网及API的日访问量在5k~8k PV，它对外接受个人及公司捐赠，捐赠者的名字会在官网首页展示，个人好像是合不到300RMB就可以了，...
What does the git index contain EXACTLY?
...he contents of the index:
$ git ls-files --stage
100644 63c918c667fa005ff12ad89437f2fdc80926e21c 0 .gitignore
100644 5529b198e8d14decbe4ad99db3f7fb632de0439d 0 .mailmap
The Racy git problem gives some more details on that structure:
The index is one of the most important data structures in gi...
tcp加速技术解决方案 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...的性能提升。
1
getsockopt(fd, SOL_SOCKET, SO_INCOMING_CPU, &cpu, &len);
SO_ATTACH_REUSEPORT_EBPF和SO_ATTACH_REUSEPORT_CBPF
如上述SO_INCOMING_CPU需要应用程序调正处理逻辑， 那有没办法直接在reuseport选择lis...
How do I write stderr to a file while using “tee” with a pipe?
...our log file very hackish and cludgy. Notice how you need to keep an exra FD and do cleanup afterward by killing it and technically should be doing that in a trap '...' EXIT.
There is a better way to do this, and you've already discovered it: tee.
Only, instead of just using it for your stdout, h...
What is the rationale for fread/fwrite taking size and count as arguments?
... one.
Consider this:
int intArray[10];
fwrite(intArray, sizeof(int), 10, fd);
If fwrite accepted number of bytes, you could write the following:
int intArray[10];
fwrite(intArray, sizeof(int)*10, fd);
But it is just inefficient. You will have sizeof(int) times more system calls.
Another poin...
Displaying the build date
...
The way
As pointed out by @c00000fd in the comments. Microsoft is changing this. And while many people don't use the latest version of their compiler I suspect this change makes this approach unquestionably bad. And while it's a fun exercise I would recommen...
“VT-x is not available” when i start my Virtual machine [closed]
...tion Tool ( http://www.microsoft.com/downloads/en/details.aspx?FamilyID=0ee2a17f-8538-4619-8d1c-05d27e11adb2&displaylang=en) which will tell you if your hardware supports VT-x.
Alternatively you can find your processor here: http://ark.intel.com/Default.aspx. All AMD processors since 2006 suppo...
Is there any way to close a StreamWriter without closing its BaseStream?
...en parameter after StreamWriter was created?
– c00000fd
Oct 19 '18 at 5:16
@c00000fd: Not that I'm aware of.
...
How to redirect output of an entire shell script within the script itself?
...
For saving the original stdout and stderr you can use:
exec [fd number]<&1
exec [fd number]<&2
For example, the following code will print "walla1" and "walla2" to the log file (a.txt), "walla3" to stdout, "walla4" to stderr.
#!/bin/bash
exec 5<&1
exec 6<&am...