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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat

... references with City. But everytime I try to save my contact, which is validated I get the exception "ADO.Net Entity Framework An entity object cannot be referenced by multiple instances of IEntityChangeTracker" ...
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CSS performance relative to translateZ(0)

...itions. But the Web has been catching up, and most browser vendors now provide graphical hardware acceleration by means of particular CSS rules. Using -webkit-transform: translate3d(0,0,0); will kick the GPU into action for the CSS transitions, making them smoother (higher FPS). Note: translate3d(...
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Available text color classes in Bootstrap

...parate css file to change it. NOTE: you could also use the customizer provided by Twitter Bootstrap, in the Navbar section. share | improve this answer | follow ...
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What are the differences between a UIView and a CALayer?

...the Mac. UIViews are very different from NSViews, but CALayers are almost identical on the two platforms. This is why the Core Plot framework lays out its graphs using CALayers instead of other UI elements. One thing UIViews provide over CALayers is built-in support for user interaction. They ha...
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How to prevent ReflectionTypeLoadException when calling Assembly.GetTypes()

...pe> GetLoadableTypes(this Assembly assembly) { // TODO: Argument validation try { return assembly.GetTypes(); } catch (ReflectionTypeLoadException e) { return e.Types.Where(t => t != null); } } You may well wish to move the return statement out of ...
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Custom numeric format string to always display the sign

... Fixed a bug whereby negatives did not get a minus. – Roman Starkov Oct 25 '11 at 16:10 ...
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How do I script a “yes” response for installing programs?

...t the CPU. stackoverflow.com/a/18164007/720665 – David Salamon Aug 2 '16 at 9:44 Nice. This just made my life substan...
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Convert list to tuple in Python

...robably suffers from readability. This essentially unpacks the list l inside a tuple literal which is created due to the presence of the single comma ,. P.s: The error you are receiving is due to masking of the name tuple i.e you assigned to the name tuple somewhere e.g tuple = (1, 2, 3). Usin...
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How to convert CharSequence to String?

... Stackoverflow won't let me post any question. :/ btw I did that last night. Custom actionbar is the solution :) – TheOnlyAnil May 5 '15 at 15:23 1 ...
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Difference between Service, Async Task & Thread?

...t wrong all of them are used to do some stuff in background. So, how to decide which to use and when? 6 Answers ...