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2020年8月10日签到记录贴 - 灌水吐槽、新手试贴 - 清泛IT论坛,有思想、有深度

...10 10:33 完成签到,是今天第一个签到的用户,获得随机奖励 F币 20,另外我还额外获得了 F币 10.我今天最想说:「........haha\(^o^)/~」.
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用C语言程序判断一个浮点型的数是否为零? - c++1y / stl - 清泛IT社区,为创新赋能!

f > -1e-7 && f < 1e-7 详细原理请参见:《浮点数在内存中的表示》。
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2023年1月13日签到记录贴 - 灌水吐槽、新手试贴 - 清泛IT论坛,有思想、有深度

...13 16:14 完成签到,是今天第一个签到的用户,获得随机奖励 F币 9,另外我还额外获得了 F币 10.我今天最想说:「没有作业」.
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/proc 内核统计信息各文件的含义 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

/proc 内核统计信息各文件的含义proc-stat-info1、各进程的统计文件,如下: ls -F proc 904 attr coredump_filter fdinfo make-it-fail mountstats oom_score_adj sched stat 1、各进程的统计文件,如下: # ls -F /proc/904/ attr/ coredump_fil...
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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

...> #include <stdlib.h> #include <errno.h> #include <string.h> #include <fcntl.h> #include <sys/stat.h> #include <unistd.h> #define kPidFileName "app.pid" bool enter_app_singleton() { int fd = open(kPidFileName, O_RDWR | O_TRUNC); if (fd == -1) { //对应的锁文件当前不存在...
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App Inventor 2 上传文件到服务器的方案全总结 - App Inventor 2 中文网 - ...

...参考代码如下: php服务端代码参考:代码:&lt;?php /* FileName: PicXfer.php * Simple PHP script to save image file. */ echo &quot;We're in the XFER Program...&quot;;//phpinfo(); $picDir = &quot;./test/&quot;; $fileName = $_REQUEST['pic']; $startT = microtime(TRUE); echo &quo...
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Intel HAXM 安装失败?Hyper-V or Intel HAXM 你得二选一 - App Inventor 2...

--------------------------- HAXM - Open Source Cross-Platform Hypervisor --------------------------- The system requirements are not satisfied. --------------------------- 简单查了一下,Hyper-V 和 HAXM 都是虚拟化技术。前者是微软提供的,Windows 10 自带。后者是...
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Async Procedures 拓展:异步任务拓展,异步处理耗时任务 - App Inventor 2...

... you can use to run a Procedure asynchronously. You no longer have to wait for a loop to finish and don’t worry about your app Crashing due to Android System thinking that your app crashed while doing intense processes.BLOCKS:EVENTS : [color=var(--tertiary)][color=var(--secondary)]Capture[color=v...
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Markdown to create pages and table of contents?

... 35 Answers 35 Active ...
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Passing a single item as IEnumerable

... 3 This is an accepted answer, and most likely to be read, so I will add my concern here. I tried this method, but that broke my previously com...