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How to round a number to significant figures in Python
I need to round a float to be displayed in a UI. E.g, to one significant figure:
20 Answers
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How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
...to parse url-encoded strings that are made up of key=value pairs separated by either & or & .
15 Answers
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Replace comma with newline in sed on MacOS?
...Prince John WesleyPrince John Wesley
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Are the days of passing const std::string & as a parameter over?
I heard a recent talk by Herb Sutter who suggested that the reasons to pass std::vector and std::string by const & are largely gone. He suggested that writing a function such as the following is now preferable:
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How to split/partition a dataset into training and test datasets for, e.g., cross validation?
... Something similar to the cvpartition or crossvalind functions in Matlab.
11 Answers
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Format bytes to kilobytes, megabytes, gigabytes
Scenario: the size of various files are stored in a database as bytes. What's the best way to format this size info to kilobytes, megabytes and gigabytes? For instance I have an MP3 that Ubuntu displays as "5.2 MB (5445632 bytes)". How would I display this on a web page as "5.2 MB" AND have files le...
Find when a file was deleted in Git
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vogellavogella
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What do the result codes in SVN mean?
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For additional details see the SVNBook: "Status of working copy files and directories".
The common statuses:
U: Working file was updated
G: Changes on the repo were automatically merged into the working copy
M: Working copy is modified
C: ...
Is there a short cut for going back to the beginning of a file by vi editor?
When reading a long file by vi editor, it would be very nice to get back to the beginning of the file by some short cuts when you really need to do so. Even ctrl + B sometimes is too slow. Does anyone know such a tool?
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Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...后，你会发现解释器居然不到200k，这是多么地变态啊（/bin/sh都要1M，MacOS平台），而且能和C语言非常好的互动。我很好奇得浏览了一下Lua解释器的源码，这可能是我看过最干净的C的源码了。
我不想写一篇大而全的语言手册，...