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How do I sort one vector based on values of another
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answered Oct 14 '09 at 21:47
Ian FellowsIan Fellows
16k1010 gold badges4444 silver badges6363 bronze badges
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How to convert a factor to integer\numeric without loss of information?
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734
See the Warning section of ?factor:
In particular, as.numeric applied to
a factor is meani...
How to use npm with node.exe?
...-02-20) will install NPM along with NodeJS.
NOTES:
At this point, the 64-bit version is your best bet
The install path for 32-bit node is "Program Files (x86)" in 64-bit windows.
You may also need to add quotes to the path statement in environment variables, this only seems to be in some cases t...
How to get the position of a character in Python?
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L S
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answered Feb 19 '10 at 6:35
Eli BenderskyEli Bendersky
218k...
[源码实例] c/c++获取网卡mac地址 - C/C++ - 清泛网 - 专注C/C++及内核技术
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// 把网卡MAC地址格式化成常用的16进制形式，如0010-A4E4-5802
sprintf(pMicID,"%02x-%02x-%02x-%02x-%02x-%02x",
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapte...
How to convert string to char array in C++?
...implest way I can think of doing it is:
string temp = "cat";
char tab2[1024];
strcpy(tab2, temp.c_str());
For safety, you might prefer:
string temp = "cat";
char tab2[1024];
strncpy(tab2, temp.c_str(), sizeof(tab2));
tab2[sizeof(tab2) - 1] = 0;
or could be in this fashion:
string temp = "cat"...
What characters are valid for JavaScript variable names?
...$A-Z\_a-z\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\...
Mysql - How to quit/exit from stored procedure
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piotrmpiotrm
10.6k44 gold badges2626 silver badges2727 bronze badges
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简单谈谈软件配置管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...者知道变了什么？为什么变？变化前后的状态是什么？
4、配置审计
IEEE中的定义：确认产品的完整性并维护构件间的一致性，即确保产品是一个严格定义的构件集合。
可以理解为：验证软件产品的构造是否符合需求、标准、...
Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
...locking. The analogous std::shared_timed_mutex is available only since C++14 (N3891), while std::shared_mutex is available only since C++17 (N4508).
C++11 timeouts are different to Boost timeouts (though this should soon change now Boost.Chrono has been accepted).
Some of the names are different (e....