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const char* concatenation
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edited Jan 4 '10 at 5:18
answered Jan 3 '10 at 14:05
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How to delete migration files in Rails 3
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edited Oct 15 '11 at 1:27
Chris Frederick
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MySQL Removing Some Foreign keys
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457
As explained here, seems the foreign key constraint has to be dropped by constraint name and no...
'IF' in 'SELECT' statement - choose output value based on column values
..., amount * -1) as amount
FROM report
See http://dev.mysql.com/doc/refman/5.0/en/control-flow-functions.html.
Additionally, you could handle when the condition is null. In the case of a null amount:
SELECT id,
IF(type = 'P', IFNULL(amount,0), IFNULL(amount,0) * -1) as amount
FROM report
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Generic List - moving an item within the list
...ly what the ObservableCollection does in it's own Move method.
UPDATE 2015-12-30: You can see the source code for the Move and MoveItem methods in corefx now for yourself without using Reflector/ILSpy since .NET is open source.
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How to clone git repository with specific revision/changeset?
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15 Answers
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Is the C# static constructor thread safe?
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Wollmich
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answered Aug 10 '08 at 8:46
ZoobaZooba
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CSS vertical alignment text inside li
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edited Jan 14 '15 at 5:37
Mark Garcia
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an...
How to develop a soft keyboard for Android? [closed]
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Diego
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answered Aug 13 '10 at 21:24
MacarseMacarse
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How to find event listeners on a DOM node when debugging or from the JavaScript code?
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508
If you just need to inspect what's happening on a page, you might try the Visual Event bookmar...