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ActiveRecord, has_many :through, and Polymorphic Associations

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How can I check if a key is pressed during the click event with jQuery?

I would like to catch a click event with jQuery and be able to tell if a key was pressed at the same time so I can fork within the callback function based on the keypress event. ...
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Handler is abstract ,cannot be instantiated

I am trying to use a Handler in my app. But when i instantiate it like this: 6 Answers ...
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Python creating a dictionary of lists

I want to create a dictionary whose values are lists. For example: 6 Answers 6 ...
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Usage of EnsureSuccessStatusCode and handling of HttpRequestException it throws

What's the usage pattern of HttpResponseMessage.EnsureSuccessStatusCode() ? It disposes of the Content of the message and throws HttpRequestException , but I fail to see how to programmatically handle it any differently than a generic Exception . For example, it doesn't include the HttpStatusCod...
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Instance variable: self vs @

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mkdir's “-p” option

So this doesn't seem like a terribly complicated question I have, but it's one I can't find the answer to. I'm confused about what the -p option does in Unix. I used it for a lab assignment while creating a subdirectory and then another subdirectory within that one. It looked like this: ...
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What does it mean when git says a file “needs update”?

I can't for the life of me find any decent explanation of the "[file]: needs update" message that git sometimes spits out from time to time. Even the official git FAQ has explaining this marked as a TODO. If someone could explain A) what it means; and B) how to fix it, I would be extremely gratefu...
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Is it OK to use Gson instance as a static field in a model bean (reuse)?

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$(this) inside of AJAX success not working

I am trying to change some old code which uses onclick so that I an use the $(this). The problem is that $(this) is not working when inside the success. Is there anyway to do this without setting it as a var. ...