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Is it worth using Python's re.compile?
Is there any benefit in using compile for regular expressions in Python?
26 Answers
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How to get 0-padded binary representation of an integer in java?
for example, for 1, 2, 128, 256 the output can be (16 digits):
17 Answers
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Scala how can I count the number of occurrences in a list
I want to implement it like this: list.count(2) (returns 3).
16 Answers
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libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...刚入门的朋友指引。
一.下载安装
1.到http://curl.haxx.se/download.html上下载最新版本，由于公司的机器安装rpm有依赖关系，所以直接下载了source
2.编译。解压后进入curl的目录，直接执行 make all 就行。
3.等待编译结束后，...
Difference between classification and clustering in data mining? [closed]
Can someone explain what the difference is between classification and clustering in data mining?
21 Answers
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Regex empty string or email
I found a lot of Regex email validation in SO but I did not find any that will accept an empty string. Is this possible through Regex only? Accepting either empty string or email only? I want to have this on Regex only.
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How to format a duration in java? (e.g format H:MM:SS)
I'd like to format a duration in seconds using a pattern like H:MM:SS. The current utilities in java are designed to format a time but not a duration.
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Strip Leading and Trailing Spaces From Java String
Is there a convenience method to strip any leading or trailing spaces from a Java String?
6 Answers
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Explode string by one or more spaces or tabs
How can I explode a string by one or more spaces or tabs?
10 Answers
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Clear android application user data
Using adb shell to clear application data
7 Answers
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