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How to set NODE_ENV to production/development in OS X
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edited Aug 24 at 15:11
Petro Franko
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answered Fe...
ALTER TABLE to add a composite primary key
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ALTER TABLE provider ADD PRIMARY KEY(person,place,thing);
If a primary key already exists the...
Check if a key exists inside a json object
...mt: "10.00",
email: "sam@gmail.com",
merchant_id: "sam",
mobileNo: "9874563210",
orderID: "123456",
passkey: "1234"
}
you can find the details here
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Sass calculate percent minus px
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Sass cannot perform arithmetic on values that cannot be converted from one unit to the next. ...
How to change webservice url endpoint?
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answered Mar 22 '10 at 8:59
Pascal ThiventPascal Thivent
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Which is better, number(x) or parseFloat(x)?
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answered Dec 3 '12 at 2:13
Nathan WallNathan Wall
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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...dp_v4_get_port(struct sock *sk, unsigned short snum)
{
unsigned int hash2_nulladdr =
udp4_portaddr_hash(sock_net(sk), htonl(INADDR_ANY), snum);
unsigned int hash2_partial =
udp4_portaddr_hash(sock_net(sk), inet_sk(sk)->inet_rcv_saddr, 0);
/* precompute partial secondary hash */
udp_sk...
编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...的并不一致。原文译自：http://www.codeproject.com/Articles/175482/Compiler-Internals-How-Try-Catch-Throw-are-Interprpreted-by-the-Microsoft-Compiler
引言
开始文章之前，先声明几件重要事情。本文不是一篇介绍如何在x86架构上详细地实现异常处理(exceptio...
Resize image proportionally with CSS? [duplicate]
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edited Jun 13 '17 at 20:51
Zanon
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answer...