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iPhone: Detecting user inactivity/idle time since last screen touch

...n]; } else { if (fabs([idleTimer.fireDate timeIntervalSinceNow]) < kMaxIdleTimeSeconds-1.0) { [idleTimer setFireDate:[NSDate dateWithTimeIntervalSinceNow:kMaxIdleTimeSeconds]]; } } } - (void)idleTimerExceeded { [idleTimer release]; idleTimer = nil; ...
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Why is the time complexity of both DFS and BFS O( V + E )

...t on a given vertex v. So the total time for a single loop is O(1)+O(e). Now sum it for each vertex as each vertex is visited once. This gives For every V => O(1) + O(e) => O(V) + O(E) share ...
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Add alternating row color to SQL Server Reporting services report

... @FistOfFury The only solution I know is to ensure a value is set (usually 0) for missing data. – Kyle Hale Dec 2 '13 at 19:27 ...
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Count characters in textarea

...why your code doesn't work if what you posted was incomplete, but without knowing that I can't know for sure. <!DOCTYPE html> <html> <head> <script src="http://code.jquery.com/jquery-1.5.js"></script> <script> function countChar(val) { var...
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Face recognition Library [closed]

... Update OpenCV 2.4.2 now comes with the very new cv::FaceRecognizer. Please see the very detailed documentation at: http://docs.opencv.org/2.4/modules/contrib/doc/facerec/index.html Original Post I have released libfacerec, a modern face rec...
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Iterating through a range of dates in Python

I have the following code to do this, but how can I do it better? Right now I think it's better than nested loops, but it starts to get Perl-one-linerish when you have a generator in a list comprehension. ...
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AttributeError: 'datetime' module has no attribute 'strptime'

...tatements import datetime: that's the module (that's what you have right now). from datetime import datetime: that's the class. share | improve this answer | follow ...
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Import CSV file into SQL Server

...alesData.NewRow(); dailyProductSalesRow["SaleDate"] = DateTime.Now.Date; dailyProductSalesRow["ProductName"] = "Nike"; dailyProductSalesRow["TotalSales"] = 10; // Add the row to the ProductSalesData DataTable prodSalesData.Rows.Add(dailyPr...
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How to prevent favicon.ico requests?

...ater, maybe after the index file has loaded the header(somebody with more knowledge of the internals of browsers please comment). Not having a favicon has potential side effects, just google it, or: stackoverflow.com/questions/4269695/… – juanheyns Dec 22 '1...
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No connection could be made because the target machine actively refused it?

... I know this is old, but you could add Fiddler to this list. detaching fiddler during startup of the app, then reattaching made my sockets work correctly. – ps2goat Sep 2 '16 at 18:52 ...