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How to detect online/offline event cross-browser?

...nows that such an attempt would fail), and must return true otherwise. Finally, the spec notes: This attribute is inherently unreliable. A computer can be connected to a network without having Internet access. share ...
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How to configure MongoDB Java driver MongoOptions for production use?

... Updated to 2.9 : autoConnectRetry simply means the driver will automatically attempt to reconnect to the server(s) after unexpected disconnects. In production environments you usually want this set to true. connectionsPerHost are the amount of physical connections a single Mongo instance (it's si...
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Opacity CSS not working in IE8

... No idea if this still applies to 8, but historically IE doesn't apply several styles to elements that don't "have layout." see: http://www.satzansatz.de/cssd/onhavinglayout.html share | ...
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Does a favicon have to be 32x32 or 16x16?

...recommendation should be to provide a 32x32 icon, skipping 16x16 entirely. All current browsers and devices support 32x32 icons. The icon will routinely be upscaled to as much as 192x192 depending on the environment (assuming there are no larger sizes available or the system didn't recognize them). ...
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Show SOME invisible/whitespace characters in Eclipse

A long while back I transitioned to doing all my web application development in Eclipse from BBEdit. But I miss one little feature from BBEdit. I used to be able to show invisible characters like tabs but not show other invisibles like spaces. I know that I can bulk turn all of these on in Eclipse, ...
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Fastest way to check if a file exist using standard C++/C++11/C?

...e thousands of files and before doing something on them I need to check if all of them exist. What can I write instead of /* SOMETHING */ in the following function? ...
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Difference between SurfaceView and View?

... Views are all drawn on the same GUI thread which is also used for all user interaction. So if you need to update GUI rapidly or if the rendering takes too much time and affects user experience then use SurfaceView. ...
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How to get the groups of a user in Active Directory? (c#, asp.net)

I use this code to get the groups of the current user. But I want to manually give the user and then get his groups. How can I do this? ...
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Difference between numeric, float and decimal in SQL Server

...Avoid using float or real columns in WHERE clause search conditions, especially the = and <> operators (Technet) so generally because the precision provided by decimal is [10E38 ~ 38 digits] if your number can fit in it, and smaller storage space (and maybe speed) of Float is not important a...
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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?

...ove Marking a reference field with CascadeType.REMOVE (or CascadeType.ALL, which includes REMOVE) indicates that remove operations should be cascaded automatically to entity objects that are referenced by that field (multiple entity objects can be referenced by a collection field): @En...