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ActiveRecord OR query
How do you do an OR query in Rails 3 ActiveRecord. All the examples I find just have AND queries.
14 Answers
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Linq 多字段排序，二次排序 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...q 多字段排序，二次排序Linq：ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 );类似SQL：select * from t1 order by f1 d...Linq：ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 );
类似SQL：select * from t1 order by f1 desc ,f2 asc
这种写法...
How do I forward declare an inner class? [duplicate]
...t.
– Erik Aronesty
Jun 14 '16 at 16:32
5
That's wrong: en.cppreference.com/w/cpp/language/nested_...
What is a lambda (function)?
... instance, here's a C# piece of code that doesn't use a lambda:
public Int32 Add(Int32 a, Int32 b)
{
return a + b;
}
public Int32 Sub(Int32 a, Int32 b)
{
return a - b;
}
public delegate Int32 Op(Int32 a, Int32 b);
public void Calculator(Int32 a, Int32 b, Op op)
{
Console.WriteLine("C...
Does using “new” on a struct allocate it on the heap or stack?
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Callum Watkins
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answered Oct 15 '08 at 8:21
Jon SkeetJon Skeet
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Unix command to prepend text to a file
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Charles Duffy
219k3232 gold badges273273 silver badges333333 bronze badges
answered Jan 14 '15 at 18:52
shimeshime
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How do I globally configure RSpec to keep the '--color' and '--format specdoc' options turned on
...toph PetschnigChristoph Petschnig
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Client to send SOAP request and receive response
..."">12</int1>
<int2 xsi:type=""xsd:integer"">32</int2>
</HelloWorld>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>");
return soapEnvelopeDocument;
}
private static void InsertSoapEnvelopeIntoWebRequest(XmlDocument soapEnvelop...
使用DOS命令 taskkill 结束本地进程，结束远程进程 - 更多技术 - 清泛网 - ...
使用DOS命令 taskkill 结束本地进程，结束远程进程dos_taskkill_processes使用DOS命令 taskkill 结束本地进程；以及如何远程kill掉其他主机的进程（一般用于远程主机远程桌面服务有问题登不上时使用）。在DOS窗口，输入taskkill /f /im 进程...
Python loop that also accesses previous and next values
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edited Apr 27 '16 at 13:32
Trang Oul
12966 bronze badges
answered Jun 18 '09 at 10:28
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