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What's the difference between deadlock and livelock?
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Taken from http://en.wikipedia.org/wiki/Deadlock:
In concurrent computing, a deadlock is a state in which each member of a group of actions, is waiting for some other member to release a lock
A livelock is similar to a deadlock,
except that the states of the
processes involved in the live...
Multiprocessing: How to use Pool.map on a function defined in a class?
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86
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Git submodule update
...led having a detached head — it means the HEAD file points directly to a commit, not to a symbolic reference.
The issue is that you generally don’t want to work in a detached head environment, because it’s easy to lose changes.
If you do an initial submodule update, commit in that submodul...
Validate decimal numbers in JavaScript - IsNumeric()
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community wiki
12 revs, 9 users 46%CMS
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Plot logarithmic axes with matplotlib in python
...ot" (which is what semilogx/semilogy does)
– Tim Whitcomb
Jul 26 '09 at 0:18
16
I came here looki...
Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术
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return utfbytes;
}
6. 延伸阅读
* http://www.ruanyifeng.com/blog/2007/10/ascii_unicode_and_utf-8.html
* The Absolute Minimum Every Software Developer Absolutely, Positively Must
Know About Unicode and Character Sets(关于字符集的最基本知识)
http://www.joelonso...
error: ‘NULL’ was not declared in this scope
I get this message when compiling C++ on gcc 4.3
6 Answers
6
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how to check the jdk version used to compile a .class file [duplicate]
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You're looking for this on the command line (for a class called MyClass):
On Unix/Linux:
javap -verbose MyClass | grep "major"
On Windows:
javap -verbose MyClass | findstr "major"
You want the major version from the results. Here are some example va...
How to force JS to do math instead of putting two strings together
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iOS: How does one animate to new autolayout constraint (height)
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