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.aspx vs .ashx MAIN difference

What are the differences between .aspx and .ashx pages? I use ashx now when I need to handle a request that was called from code and returned with a response, but I would like a more technical answer please. ...
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How can I insert values into a table, using a subquery with more than one result?

I really would appreciate your help. 6 Answers 6 ...
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When I catch an exception, how do I get the type, file, and line number?

Catching an exception that would print like this: 4 Answers 4 ...
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iOS: How does one animate to new autolayout constraint (height)

I've never worked with autolayout constraints before. I have a small new app I'm working on and noticed that the NIB's views are defaulting to autolayout. So, I figured I'd take the opportunity to work with it and try to figure out where Apple is going with this. ...
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How to save as a new file and keep working on the original one in Vim?

Whenever I use the :sav command, it saves the file with a new name and opens the new file open in Vim. 4 Answers ...
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Assign same value to multiple variables at once?

How can I assign the same value for multiple variables in PHP at once ? 2 Answers 2 ...
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Python - Passing a function into another function

I am solving a puzzle using python and depending on which puzzle I am solving I will have to use a special set of rules. How can I pass a function into another function in Python? ...
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When to create a new app (with startapp) in Django?

I've googled around for this, but I still have trouble relating to what Django defines as "apps". 7 Answers ...
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What is the mouse down selector in CSS?

I have noticed that buttons and other elements have a default styling and behave in 3 steps: normal view, hover/focus view and mousedown/click view, in CSS I can change the styling of normal view and hover view like this: ...
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What is the advantage of using async with MVC5?

What is the difference between: 3 Answers 3 ...