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The tilde operator in Python
...complement representation of the integer are reversed (as in b <- b XOR 1 for each individual bit), and the result interpreted again as a twos-complement integer. So for integers, ~x is equivalent to (-x) - 1.
The reified form of the ~ operator is provided as operator.invert. To support this o...
How do I draw a grid onto a plot in Python?
...plot using pylab in Python and now I would like to superimpose a grid of 10x10 onto the scatter plot. How do I do that?
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20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...际原因。这些监控命令足够你选择适合你的监控场景。
1. top —Linux系统进程监控
top 命令是性能监控程序，它可以在很多 Linux/Unix 版本下使用，并且它也是 Linux 系统管理员经常使用的监控系统性能的工具。Top 命令可以定期显...
How to check if there's nothing to be committed in the current branch?
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An alternative to testing whether the output of git status --porcelain is empty is to test each ...
How to determine the Boost version on a system?
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Twitter oAuth callbackUrl - localhost development
...bled recently. http://code.google.com/p/twitter-api/issues/detail?id=534#c1
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Random record from MongoDB
I am looking to get a random record from a huge (100 million record) mongodb .
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Ruby: How to turn a hash into HTTP parameters?
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SQL query to select dates between two dates
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