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Opening port 80 EC2 Amazon web services [closed]

I've opened port 80 in the web console on my E2C instance's security group but I still can't access it via the public dns in the browser. ...
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What does the WPF star do (Width=“100*”)

What does exactly the star in size terms in WPF mean? 4 Answers 4 ...
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Transpose a data frame

I need to transpose a large data frame and so I used: 4 Answers 4 ...
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Non-static method requires a target

I have a controller action that works fine on Firefox both locally and in production, and IE locally, but not IE in production. Here is my controller action: ...
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Getting the parent div of element

This should be really simple but I'm having trouble with it. How do I get a parent div of a child element? 7 Answers ...
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Altering a column: null to not null

I have a table that has several nullable integer columns. This is undesirable for several reasons, so I am looking to update all nulls to 0 and then set these columns to NOT NULL . Aside from changing nulls to 0 , data must be preserved. ...
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What do numbers using 0x notation mean?

What does a 0x prefix on a number mean? 5 Answers 5 ...
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Best way to center a on a page vertically and horizontally? [duplicate]

Best way to center a <div> element on a page both vertically and horizontally? 30 Answers ...
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In Jinja2, how do you test if a variable is undefined?

Converting from Django, I'm used to doing something like this: 6 Answers 6 ...
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Difference between Label and TextBlock

According to the Windows Applications Development with Microsoft .NET 4 70-511 Training Kit 5 Answers ...