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译文：理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...要使用一个叫做Widget的类，但是这个类不能被继承，所以无法增加新的功能。
但是我们如果想追踪Widget对象的额外信息，我们该怎么办？ 假设我们需要记录每个对象的序列号，但是由于Widget类并不包含这个属性，而且也不能扩...
HTML5 Email Validation
It is said "With HTML5, we need no more js or a server side code to check if the user's input is a valid email or url address"
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How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?
...her part of the content type separately (for example, you have some text/plain pages, and some text/html pages, but they are all UTF8.) Is my understanding correct?
– Eric Seastrand
Jan 29 '15 at 15:55
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为何谷歌不可复制？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...从某种意义上说，由两位(前)谷歌人撰写的谷歌运营指南无法摆脱公关目的，但本着批判性阅读的精神去读，本书还是提供了一个观察现代性公司的新角度，尤其在后德鲁克管理学时代，一家成功公司背后的构成要素又是什么。
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Open a new tab in gnome-terminal using command line [closed]
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You can also have each tab run a set command.
gnome-terminal --tab -e "tail -f somefile" --tab -e "some_other_command"
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Are there any suggestions for developing a C# coding standards / best practices document? [closed]
I'm a recent AI graduate (circa 2 years) working for a modest operation. It has fallen to me (primarily as I'm the first 'adopter' in the department) to create a basic (read useful?) C# coding standards document.
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How to paste in a new line with vim?
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@AI: Using the ',p' (',' is mapped as my <Leader>) is the best solution in my opinion. YOu even provided an easy to use function. :) Great!
– Somebody still uses you MS-DOS
May 25 '...
How can I list all tags in my Git repository by the date they were created?
... easy reference: git log --tags --simplify-by-decoration --pretty="format:%ai %d"
– Gilead
Oct 24 '12 at 13:02
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OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的方法照做，进去后把参数修改回来，重启正常了，SSH 无法登陆的问题还是没有解决
又有说是算法的问题
http://bbs.51cto.com/thread-1176918-1.html
照做还是不行， 于是陷入了无休止的找资料之中
回过头来在来看
http://pk...
Zip lists in Python
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When you zip() together three lists containing 20 elements each, the result has twenty elements. Each element is a three-tuple.
See for yourself:
In [1]: a = b = c = range(20)
In [2]: zip(a, b, c)
Out[2]:
[(0, 0, 0),
(1, 1, 1),
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(17, 17, 17),
(18, 18, 18...