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Facebook App: localhost no longer works as app domain

I've been writing a game for Facebook using Rails and jQuery. Since I started using the Facebook Javascript SDK, using localhost as an app domain seemed to work just fine. I was able to test my game both locally and on Heroku. ...
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How do I (or can I) SELECT DISTINCT on multiple columns?

...on the same day for the same price. The sales that are unique based on day and price will get updated to an active status. ...
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How to make a div fill a remaining horizontal space?

I have 2 divs: one in the left side and one in the right side of my page. The one in the left side has fixed width and I want the one of the right side to fill the remaining space. ...
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When are you truly forced to use UUID as part of the design?

...ur major UUID versions: Version 4 UUIDs are essentially just 16 bytes of randomness pulled from a cryptographically secure random number generator, with some bit-twiddling to identify the UUID version and variant. These are extremely unlikely to collide, but it could happen if a PRNG is used or if ...
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How to pass command line argument to gnuplot?

...file, say foo.data . Currently, I hardcoded the data file name in the command file, say foo.plt , and run command gnuplot foo.plg to plot data. However, I want to pass the data file name as a command argument, e.g. running command gnuplot foo.plg foo.data . How to parse the command line argumen...
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Difference between using Throwable and Exception in a try catch

... highest "catch all" level of a thread where you want to log or otherwise handle absolutely everything that can go wrong. It would be more typical in a framework type application (for example an application server or a testing framework) where it can be running unknown code and should not be affecte...
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Pass Array Parameter in SqlCommand

...t a time. var parameters = new string[items.Length]; var cmd = new SqlCommand(); for (int i = 0; i < items.Length; i++) { parameters[i] = string.Format("@Age{0}", i); cmd.Parameters.AddWithValue(parameters[i], items[i]); } cmd.CommandText = string.Format("SELECT * from TableA WHERE Age ...
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C# “as” cast vs classic cast [duplicate]

... thrown. With the as method, it results in null, which can be checked for, and avoid an exception being thrown. Also, you can only use as with reference types, so if you are typecasting to a value type, you must still use the "classic" method. Note: The as method can only be used for types that c...
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How do I autoindent in Netbeans?

In eclipse you can click Ctrl + I at any line, and it'll automatically indent the line or group of lines according to the indentation scheme you chose in the settings. ...
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Implementing Comments and Likes in database

...a user will be allowed to mark an entity as liked (like in FB), tag it and comment . 7 Answers ...