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What characters can be used for up/down triangle (arrow without stem) for display in HTML?
...ml entities. I can report that the left arrow does not show up well in the android browser, but the right arrow does.
– oabarca
Mar 15 '14 at 21:09
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动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...很多工程师把它移植到其他的操作系统。比方说苹果的 Mac OS X 操作系统上就有 DTrace 的移植。其实近些年发布的每一台苹果笔记本或者台式机上面，都有现成的 dtrace 命令行工具可以调用，大家可以去在苹果机器的命令行终端上...
How do I prevent site scraping? [closed]
...g your site in mobile apps.
While not technically scraping, mobile apps (Android and iOS) can embed websites, and inject custom CSS and JavaScript, thus completely changing the appearance of your pages.
Human copy - paste: People will copy and paste your content in order to use it elsewhere.
The...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
... (msg->msg_flags&MSG_CONFIRM) //设置MSG_CONFIRM，表示确认ip地址到mac地址的映射不会过期，不用定时发送arp
goto do_confirm;
back_from_confirm:
saddr = fl4->saddr; //获取路由源地址
if (!ipc.addr) //如果选项中更没有指定目的地址，从路由中获取. ...