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How to perform OR condition in django queryset?
...ryset = combined_queryset.order_by('-income')
Update 2019-06-20: This is now fully documented in the Django 2.1 QuerySet API reference. More historic discussion can be found in DjangoProject ticket #21333.
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What is the best way to clone/deep copy a .NET generic Dictionary?
...ill give you a deep copy of the Dictionary and all the items inside of it. Now you can create a deep copy of any object that is marked as [Serializable] without writing any special code.
Here are two methods that will use Binary Serialization. If you use these methods you simply call
object deepc...
Functional style of Java 8's Optional.ifPresent and if-not-Present?
...implementing consumer for better usage with other components.
by the way now its name is more descriptive it is actually Consumer>
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Xcode debugger doesn't print objects and shows nil, when they aren't
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Ah ok, I created an empty project and can now see all the differences in the Build Settings, the deployment property Strip debug symbols during copy was set to YES.
– Binarian
Nov 11 '13 at 11:32
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How to get name of calling function/method in PHP? [duplicate]
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The debug_backtrace() function is the only way to know this, if you're lazy it's one more reason you should code the GetCallingMethodName() yourself. Fight the laziness! :D
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How to reset postgres' primary key sequence when it falls out of sync?
...quence tbl_tbl_id_seq (which is the default automatic name).
If you don't know the name of the attached sequence (which doesn't have to be in default form), use pg_get_serial_sequence():
SELECT setval(pg_get_serial_sequence('tbl', 'tbl_id'), max(tbl_id)) FROM tbl;
There is no off-by-one error here....
When should I release objects in -(void)viewDidUnload rather than in -dealloc?
...view
// Release anything that's not essential, such as cached data
}
Now, in the new OS 3.0, there is an -viewDidUnload method, which will be invoked from the system when the view has been unloaded because of low memory (please correct me: when exactly does this get called?)
-viewDidUnload is...
How to hide soft keyboard on android after clicking outside EditText?
Ok everyone knows that to hide a keyboard you need to implement:
44 Answers
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Guaranteed lifetime of temporary in C++?
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litb's answer is accurate. The lifetime of the temporary object (also known as an rvalue) is tied to the expression and the destructor for the temporary object is called at the end of the full expression and when the destructor on StringBuffer is called, the destructor on m_buffer will also be c...
Converting 'ArrayList to 'String[]' in Java
...gpost reveals that due to JVM optimizations, using new String[0] is better now.
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