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https://www.tsingfun.com/it/tech/1762.html 

linux内存cached释放 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... To free pagecache: echo 1 > /proc/sys/vm/drop_caches To free dentries and inodes: echo 2 > /proc/sys/vm/drop_caches To free pagecache, dentries and inodes: echo 3 > /proc/sys/vm/drop_caches 经常使用rsync传输大量数据的朋友可能遇到过类似的情况:开始是传输大量...
https://www.tsingfun.com/it/tech/1973.html 

Curses library not found. Please install appropriate package - 更多...

...ary not found. Please install appropriate package, remove CMakeCache.txt and rerun cmake.On Debian/Ubuntu, package name is libncurses5-dev, on Redhat and derivates it is ncurses-devel. Call Stack (most recent call first): cmake/readline.cmake:128 (FIND_CURSES) cmake/readline.cmake:202 (MYSQ...
https://www.tsingfun.com/it/tech/2017.html 

php 遍历目录批量转换文件编码 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...while ($file = $mydir->read()) { if ((is_dir("$directory/$file")) AND ($file != ".") AND ($file != "..")) { tree("$directory/$file"); } else { $file ="$directory/$file"; // echo "<li>$file</li>\n"; if(is_file($file)){ ...
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VBA 单元格日期与当前日期比较 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...:& 39;日期小于今天的If IsDate(Worksheets("xxx") Range("A" & 0)) And CDate(Worksheets("xxx VBA 单元格日期与当前日期比较的代码: '日期小于今天的 If IsDate(Worksheets("xxx").Range("A" & 0)) And CDate(Worksheets("xxx").Range("A" & 0)) < Date Then ... End If x...
https://bbs.tsingfun.com/thread-634-1-1.html 

正确重置MySQL密码 - 爬虫/数据库 - 清泛IT社区,为创新赋能!

...QL密码:UPDATE mysql.user SET Password=PASSWORD('...') WHERE User='...' AND Host= '...'; FLUSH PRIVILEGES;为什么说它是错误答案?因为在单纯使用skip-grant-tables参数启动服务后,除非数据库服务器屏蔽了外网访问,否则除了自己,其它别有用心的人...
https://bbs.tsingfun.com/thread-578-1-1.html 

解决IIS发布时global_asax的dll 的CS0433冲突问题 - 环境配置 - 清泛IT社区,为创新赋能!

...o service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS0433: The type 'ASP.global_asax' exists in both 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\925f9bdc\bb48a68c\App_glob...
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C++ SpinLock 自旋锁的代码实现(全网最简略的方式) - C/C++ - 清泛网 - ...

...TOMIC_FLAG_INIT) {} virtual ~SpinLock() {} void lock() { while(f_.test_and_set(memory_order_acquire)); } void unlock() { f_.clear(memory_order_release); } }; 2、有退避策略的自旋锁,尝试一定次数(65535)失败后让出线程调度权: class SpinLockWithYield { atomic_f...
https://bbs.tsingfun.com/thread-1717-1-1.html 

自定义下载器扩展:个性化下载进度展示 - App Inventor 2 拓展 - 清泛IT社...

...Name Event triggered to report download progress, speed, eta, fileSize, and downloadedSize Download the file of given URL to the given path with CustomFilePath.isEmpty : filePath = /storage/emulated/0/Download Sat This CustomFilePath : /storage/emulated/0/Download/any folder name Set the ...
https://bbs.tsingfun.com/thread-2191-1-1.html 

mobile location - App应用开发 - 清泛IT社区,为创新赋能!

通过android studio实现:&nbsp;&nbsp;在屏幕上输入手机号码,点击确定开始查找,用gps数据确定手机的当前精确位置,精确度5米,找到后把经纬度写在两个文字框里,并在百度地图上标注出位置,并移动到屏幕中央,放大地图。 Imple...
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AccessibilityTools 无障碍工具扩展:执行返回、主页和最近任务等操作 · A...

...面板 API 17 SplitScreen激活分屏 API 26,Android Oreo 8.1.0 起可用 其他方法 API 16 后续回复中有用户反馈:如果应用面向 Android 12 或更高版本,可能因为服务带有 intent filter 但未设置 android:exp...