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What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?

I used JSLint on a JavaScript file of mine. It threw the error: 8 Answers 8 ...
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I just discovered why all ASP.Net websites are slow, and I am trying to work out what to do about it

I just discovered that every request in an ASP.Net web application gets a Session lock at the beginning of a request, and then releases it at the end of the request! ...
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Is there any Rails function to check if a partial exists?

When I render a partial which does not exists, I get an Exception. I'd like to check if a partial exists before rendering it and in case it doesn't exist, I'll render something else. I did the following code in my .erb file, but I think there should be a better way to do this: ...
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What is the most efficient Java Collections library? [closed]

What is the most efficient Java Collections library? 12 Answers 12 ...
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Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (

I am using Entity Framework to populate a grid control. Sometimes when I make updates I get the following error: 45 Answers...
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How can I eliminate slow resolving/loading of localhost/virtualhost (a 2-3 second lag) on Mac OS X L

Since setting up my development environments on Mac OS X Lion (brand new macbook air purchased in January 2012), I have noticed that resolving to a virtual host is very slow (around 3 seconds) the first time but after that is fast as long as I continue loading it regularly. ...
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Error: could not find function … in R

I am using R and tried some.function but I got following error message: 10 Answers 1...
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Warning: Found conflicts between different versions of the same dependent assembly

I am currently developing a .NET application, which consists of 20 projects. Some of those projects are compiled using .NET 3.5, some others are still .NET 2.0 projects (so far no problem). ...
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Changing the resolution of a VNC session in linux [closed]

I use VNC to connect to a Linux workstation at work. At work I have a 20" monitor that runs at 1600x1200, while at home I use my laptop with its resolution of 1440x900. If I set the vncserver to run at 1440x900 I miss out on a lot of space on my monitor, whereas if I set it to run at 1600x1200 it d...
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How to get child element by class name?

I'm trying to get the child span that has a class = 4. Here is an example element: 17 Answers ...