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TCP 的那些事儿（上） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...破问题就是对方的了，呵呵。另外，如果你的服务器是于HTTP服务器，那么设置一个HTTP的KeepAlive有多重要（浏览器会重用一个TCP连接来处理多个HTTP请求），然后让客户端去断链接（你要小心，浏览器可能会非常贪婪，他们不到万...
How to tell if a file is git tracked (by shell exit code)?
...ject-repo-directory# git log src/../somefile.js
commit ad9180b772d5c64dcd79a6cbb9487bd2ef08cbfc
Author: User <someone@somedomain.com>
Date: Mon Feb 20 07:45:04 2017 -0600
fix eslint indentation errors
....
....
If the file is not git tracked,
root@user-ubuntu:~/project-repo-directory...
js/php判断终端类型：PC访问、手机访问、微信访问 - 更多技术 - 清泛网 - ...
...ser.versions.mobile && !browser.versions.iPad) {
window.location.href="https://www.tsingfun.com/index.php?m=wap";
}
</script>
不过有时候还是后端判断直接定位相应模板来得直接，不用中转一道，这里提供php的判断方法：
// 判断是否是手机端
functi...
Transparent ARGB hex value
...RGGBB (or #ARGB) I have tested in Chrome 62,63,64 Refer to CanIUse.com , https://css-tricks.com/8-digit-hex-codes/ , Chrome Feature Status
– SGS Sandhu
Mar 2 '18 at 16:55
...
What's the complete range for Chinese characters in Unicode?
... reference(also have a look at wiki page) block name
4E00 9FEF http://www.unicode.org/charts/PDF/U4E00.pdf CJK Unified Ideographs
3400 4DBF http://www.unicode.org/charts/PDF/U3400.pdf CJK Unified Ideographs Extension A
20000 2A6DF http://www.unicode.org/charts/PDF/U20000.pdf ...
Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?
... about experimenting with Java and SIMD instructions written by my friend:
http://prestodb.rocks/code/simd/
Its general outcome is that you can expect JIT to use some SSE operations in 1.8 (and some more in 1.9). Though you should not expect much and you need to be careful.
...
What characters can be used for up/down triangle (arrow without stem) for display in HTML?
... to use the large versions in smaller font.
More Unicode arrows are at:
http://en.wikipedia.org/wiki/Arrow_%28symbol%29#Arrows_in_Unicode
http://en.wikipedia.org/wiki/Geometric_Shapes
Lastly, these arrows are not ASCII, including ↑ and ↓: they are Unicode.
...
多媒体组件 · App Inventor 2 中文网
...源文件
声音文件的名称。
仅支持某些格式，请参阅http://developer.android.com/guide/appendix/media-formats.html。
事件
无
方法
暂停()
如果正在播放声音，则暂停播放。
播放()
播放声音。
恢复()
暂停后继续播放声音...
C++读写EXCEL文件方式比较 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Basic EXCEL 方式
这是CodeProject上的一个推荐开源工程了，
http://www.codeproject.com/KB/office/BasicExcel.aspx
作者是基于EXCEL的文件格式进行的处理。但是为什么叫Basic EXCEL呢。
他不支持很多东西，公式，文件格式，表格合并等（有人说中...
jquery在线预览PDF文件，打开PDF文件 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN" dir="ltr">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>Online View PDF</t...