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How to edit log message already committed in Subversion?
...ctory cannot be used as they are Unix-specific. You need to copy a Windows batch file pre-revprop-change.bat to the hooks directory, e.g. the one provided here.
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How can building a heap be O(n) time complexity?
...inserts into an existing heap, so it would be used to implement a priority queue using a binary heap, for example.
I've written this to describe how a max heap works. This is the type of heap typically used for heap sort or for a priority queue where higher values indicate higher priority. A min hea...
Asynchronous method call in Python?
.... You you could let the thread to put the results of the execution in some queue, or/and call a callback. Otherwise you do not know when it's done (if at all).
– Drakosha
Jun 5 '14 at 22:10
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This IP, site or mobile application is not authorized to use this API key
...api/place/nearbysearch/json?location=yourlatitude,yourlongitude&radius=5000&sensor=true&key=SERVERKEY
Now, to obtain the server key, just follow these steps:
1) Go to Developer Console https://code.google.com/apis/console/
2) In the Credentials, under Public API Access, Create New key...
Is it safe to assume a GUID will always be unique?
I know there is a minute possibility of a clash but if I generated a batch of 1000 GUIDs (for example), would it be safe to assume they're all unique to save testing each one?
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How can I make the computer beep in C#?
... specify the frequency and length of the beep in milliseconds.
// Beep at 5000 Hz for 1 second
Console.Beep(5000, 1000);
For more information refer http://msdn.microsoft.com/en-us/library/8hftfeyw%28v=vs.110%29.aspx
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UICollectionView current visible cell index
...lerating:(UIScrollView *)scrollView
{
dispatch_async(dispatch_get_main_queue(), ^{
UICollectionViewCell * visibleCell= [[self.collectionView visibleCells] objectAtIndex:0];
[visibleCell doSomthing];
});
}
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Difference between Statement and PreparedStatement
...verall faster execution and the ability to reuse the same SQL statement in batches.
Automatic prevention of SQL injection attacks by builtin escaping of quotes and other special characters. Note that this requires that you use any of the PreparedStatement setXxx() methods to set the values
prepare...
How to atomically delete keys matching a pattern using Redis
...r of keys: EVAL "local keys = redis.call('keys', ARGV[1]) \n for i=1,#keys,5000 do \n redis.call('del', unpack(keys, i, math.min(i+4999, #keys))) \n end \n return keys" 0 prefix:*
– sheerun
Aug 19 '14 at 23:12
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Extracting .jar file with command line
...' is not recognized as an internal or external command,operable program or batch file. How do I fix this?
– Bobby C
Dec 10 '11 at 5:09
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