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Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
...锁定
struct flock fl;
fl.l_type = F_WRLCK; // 写文件锁定
fl.l_start = 0;
fl.l_whence = SEEK_SET;
fl.l_len = 0;
int ret = fcntl(fd, F_SETLK, &fl);
if (ret < 0) {
if (errno == EACCES || errno == EAGAIN) {
printf("%s already locked, error: %s\n", kPidFileName, strerror(errno...
【解决】Linux mysql如何重置root密码？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...min -u root -p shutdown
启动mysql数据库：
[root@z ~]# systemctl start mysql
（或者）启动MariaDB数据库
[root@z ~]# systemctl start mariadb
8. 验证新密码
输入以下命令，验证刚刚设置的新密码：
[root@z ~]# mysql -u root -p
提示你需要输入刚刚设...
How do I toggle an ng-show in AngularJS based on a boolean?
...
I use your trick with ng-class : <span ng-click="started=!started" ng-class="started ? 'btn-danger' : 'btn-success' "> +1 . Thank you : ) ♥.
– ivahidmontazer
Jun 15 '16 at 0:18
...
difference between Product Backlog Item and Feature in Team Foundation work item types
...dditional information on the use of Features. visualstudio.com/en-us/get-started/… Unfortunately for Visual Studio Online Features will only be accessible to users with Advanced licenses. :-( visualstudio.com/en-us/get-started/try-additional-features-vs pricing will be $60 per user/month.
...
Simplest way to profile a PHP script
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xdebug + xdebug_start_trace() + xdebug_stop_trace() = win
– quano
May 9 '11 at 11:24
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How to calculate md5 hash of a file using javascript
...talParts = Math.ceil(file.size / bufferSize);
var currentPart = 0;
var startTime = new Date().getTime();
fileReader.onload = function(e) {
currentPart += 1;
def.notify({
currentPart: currentPart,
totalParts: totalParts
});
var buffer = e.target.result;
hashAl...
HTML 5: Is it , , or ?
...rbidden from containing any content at all. In HTML, these elements have a start tag only. The self-closing tag syntax may be used. The end tag must be omitted because the element is automatically closed by the parser.
HTML Example:
A void element in the HTML syntax. This is not permitted in ...
Service Temporarily Unavailable Magento?
My application was working fine yesterday. I started my PC today. When I tried to start Magento I got this error message.
1...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
... new array object will have a different shape then x and maybe a different starting offset into the buffer, but will share the strides with x (in this case at least):
y.shape
(2,2)
y.strides
(16, 4)
This way, computing the memory offset for y[i,j] will yield the correct result.
But what should N...
More than 10 lines in a node.js stack error?
...
Easiest solution for that is to start your code with following:
Error.stackTraceLimit = Infinity;
If you'd like to see stack trace that spans over setTimeout/setInterval calls, then more sophisticated https://github.com/mattinsler/longjohn would be the w...