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Execute AsyncTask several times

In my Activity I use a class which extends from AsyncTask and a parameter which is an instance of that AsyncTask. When I call mInstanceOfAT.execute("") everything is fine. But the app crash when I press an update button which calls again the AsyncTask(In case the network job didnt work). Cause the...
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Rails :include vs. :joins

... that requires it. In some cases, you know the join will be more efficient and will not incur the risk of duplication. – Jonathan Swartz Nov 21 '13 at 0:28 1 ...
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change cursor to finger pointer

I have this a and I don't know that I need to insert into the "onmouseover" so that the cursor will change to finger pointer like a regular link: ...
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Rendering JSON in controller

I was reading a book and in a chapter about Controllers when it talks about rendering stuff, for JSON it has an example like this but doesn't go in to details so I couldn't figure out the bigger picture that this example fits in: ...
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How to get Latitude and Longitude of the mobile device in android?

How do I get the current Latitude and Longitude of the mobile device in android using location tools? 8 Answers ...
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What are fixtures in programming?

... The purpose of a test fixture is to ensure that there is a well known and fixed environment in which tests are run so that results are repeatable. Some people call this the test context. Examples of fixtures: Loading a database with a specific, known set of data Erasing a hard ...
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Disable developer mode extensions pop up in Chrome

...is: Pack your extension: go to chrome://extensions, check Developer mode and click Pack extension Install the extension by dragging and dropping the .crx file into the chrome://extensions page. You'll get an "Unsupported extensions disabled" popup if you try restarting Chrome at this point. The...
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Recommended SQL database design for tags or tagging [closed]

...rd of a few ways to implement tagging; using a mapping table between TagID and ItemID (makes sense to me, but does it scale?), adding a fixed number of possible TagID columns to ItemID (seems like a bad idea), Keeping tags in a text column that's comma separated (sounds crazy but could work). I've e...
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How is Racket different from Scheme?

... Racket is ultimately based on R5RS, and not R6RS and not a strict superset of either. I don't think it can be called 'Scheme' because it's not backwards compatible with any Scheme standard. Most implementations offer extensions, but are otherwise backwards com...
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Why is an array not assignable to Iterable?

... Arrays can implement interfaces (Cloneable and java.io.Serializable). So why not Iterable? I guess Iterable forces adding an iterator method, and arrays don't implement methods. char[] doesn't even override toString. Anyway, arrays of references should be considered l...