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How to auto-center jQuery UI dialog when resizing browser?

When you use jquery UI dialog, all works well, except for one thing. When the browser is resized, the dialog just stays in it's initial position which can be really annoying. ...
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How do I create and access the global variables in Groovy?

I need to store a value in a variable in one method and then I need to use that value from that variable in another method or closure. How can I share this value? ...
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How do you check “if not null” with Eloquent?

How do you check if a field is not null with Eloquent? 7 Answers 7 ...
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How do I migrate a model out of one django app and into a new one?

I have a django app with four models in it. I realize now that one of these models should be in a separate app. I do have south installed for migrations, but I don't think this is something it can handle automatically. How can I migrate one of the models out of the old app into a new one? ...
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How do I create an average from a Ruby array?

How would get find an average from an array? 20 Answers 20 ...
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How do I set the value property in AngularJS' ng-options?

Here is what seems to be bothering a lot of people (including me). 27 Answers 27 ...
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How to change default text file encoding in Eclipse?

Whenever I add a new html file (or other text file) to the project its encoding is set to Cp1250. I am not sure why, I guess this is probably because my default language in Windows is Polish and I don't want to change it. Anyway, Eclipse says that Cp1250 is a 'default' encoding and I have to manuall...
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How can I lock a file using java (if possible)

I have a Java process that opens a file using a FileReader. How can I prevent another (Java) process from opening this file, or at least notify that second process that the file is already opened? Does this automatically make the second process get an exception if the file is open (which solves my p...
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Junit - run set up method once

I set up a class with a couple of tests and rather than using @Before I would like to have a setup method that executes only once before all tests. Is that possible with Junit 4.8? ...
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How do I see the extensions loaded by PHP?

It's got to be somewhere in the phpinfo() dump, but I just don't know where. Is it supposed to be under the "Additional Modules" section? Somewhere else? I'm trying to figure out why some extensions don't appear to be loaded, but I don't even know where I should be looking. ...