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Get hostname of current request in node.js Express

...rs.host is provided by the user. I can craft a request in 1 line of python and send you a request without that field making your code crash – arboreal84 Jul 28 '16 at 18:31 ...
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What is the difference between the operating system and the kernel? [closed]

I do not understand the difference between operating system and kernel. Can someone please explain it? 3 Answers ...
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Mac OS X 入门操作常见问题集锦(持续更新) - 更多技术 - 清泛网 - 专注C/...

Mac OS X 入门操作常见问题集锦(持续更新)如何截图:shift + command + 3 截整屏shift + command + 4 截窗口(默认png,并保存到桌面)shift + command + Ctrl + 4 如何截图: shift + command + 3 截整屏 shift + command + 4 截窗口(默认png,并保存...
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Argparse optional positional arguments?

...arguments: dir optional arguments: -h, --help show this help message and exit -v share | improve this answer | follow | ...
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Why do I get a “Null value was assigned to a property of primitive type setter of” error message whe

...e if there are no nulls in the DB, but will fail once nulls are inserted. And you can always return the primitive type from the getter. Ex: private Integer num; public void setNum(Integer i) { this.num = i; } public int getNum() { return this.num; } But in most cases you will...
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py2exe - generate single executable file

...it out. Has anyone successfully done this? Can I see your setup.py file, and what command line options you used? 9 Answer...
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Using IPython notebooks under version control

... Here is my solution with git. It allows you to just add and commit (and diff) as usual: those operations will not alter your working tree, and at the same time (re)running a notebook will not alter your git history. Although this can probably be adapted to other VCSs, I know it d...
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Is there an S3 policy for limiting access to only see/access one bucket?

...source). As stated in this AWS blog post "as an aside, you currently can't selectively filter out certain buckets, so users must have permission to list all buckets for console access." – jwadsack Jun 25 '14 at 20:46 ...
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How to move up a directory with Terminal in OS X

... Make sure to put the space between "cd" and "..", small but may cause a pain if not paying attention. – Abdullah Rasheed Aug 26 '15 at 10:53 ...
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How do I profile memory usage in Python?

I've recently become interested in algorithms and have begun exploring them by writing a naive implementation and then optimizing it in various ways. ...