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How to find patterns across multiple lines using grep?
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Grep is not sufficient for this operation.
pcregrep which is found in most of the modern Linux systems can be used as
pcregrep -M 'abc.*(\n|.)*efg' test.txt
where -M, --multiline allow patterns to match more than one line
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General guidelines to avoid memory leaks in C++ [closed]
What are some general tips to make sure I don't leak memory in C++ programs? How do I figure out who should free memory that has been dynamically allocated?
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How do I break out of a loop in Perl?
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How do I save and restore multiple variables in python?
...'](3)
9
>>> db['f'].bar(4)
5
>>>
Get the code here:
https://github.com/uqfoundation
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mongodb count num of distinct values per field/key
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Change the Right Margin of a View Programmatically?
...ed already). However be careful which LayoutParams to choose. According to https://stackoverflow.com/a/11971553/3184778 "you need to use the one that relates to the PARENT of the view you're working on, not the actual view"
If for example the TextView is inside a TableRow, then you need to use Tabl...
Does C have a “foreach” loop construct?
Almost all languages have a foreach loop or something similar. Does C have one? Can you post some example code?
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Get battery level and state in Android
...e;
return (int)(batteryPct*100);
This is from the official docs over at https://developer.android.com/training/monitoring-device-state/battery-monitoring.html.
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Is it possible to get the non-enumerable inherited property names of an object?
In JavaScript we have a few ways of getting the properties of an object, depending on what we want to get.
9 Answers
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程序员之网络安全系列（四）：数据加密之非对称秘钥 - 更多技术 - 清泛网 -...
...密算法不同，非对称加密算法需要两个密钥：公开密钥（publickey）和私有密钥（privatekey)。公开密钥与私有密钥是一对，如果用公开密钥对数据进行加密，只有用对应的私有密钥才能解密；如果用私有密钥对数据进行加密，那么...