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Rails “validates_uniqueness_of” Case Sensitivity

Here is the model (I am using SQLLite3): 4 Answers 4 ...
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Change a column type from Date to DateTime during ROR migration

I need to change my column type from date to datetime for an app I am making. I don't care about the data as its still being developed. ...
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Why does pattern matching in Scala not work with variables?

Take the following function: 1 Answer 1 ...
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Android: Bitmaps loaded from gallery are rotated in ImageView

When I load an image from the media gallery into a Bitmap, everything is working fine, except that pictures that were shot with the camera while holding the phone vertically, are rotated so that I always get a horizontal picture even though it appears vertical in the gallery. Why is that and how can...
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How to save traceback / sys.exc_info() values in a variable?

I want to save the name of the error and the traceback details into a variable. Here's is my attempt. 5 Answers ...
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nginx missing sites-available directory

I installed Nginx on Centos 6 and I am trying to set up virtual hosts. The problem I am having is that I can't seem to find the /etc/nginx/sites-available directory. ...
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How Do I Document Packages in Java?

In the Java APIs I can see Javadoc comments for packages. 3 Answers 3 ...
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What are markers in Java Logging frameworks and what is a reason to use them?

First time I hear about markers when read: 1 Answer 1 ...
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Difference between .success() and .complete()?

As of jQuery 1.5, all jQuery's AJAX methods return a jqXHR object that provides .error() , .success() , and .complete() methods. ...
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Get file size, image width and height before upload

How can I get the file size, image height and width before upload to my website, with jQuery or JavaScript? 7 Answers ...