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Is there a way to check if a file is in use?

I'm writing a program in C# that needs to repeatedly access 1 image file. Most of the time it works, but if my computer's running fast, it will try to access the file before it's been saved back to the filesystem and throw an error: "File in use by another process" . ...
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What's the Best Way to Shuffle an NSMutableArray?

If you have an NSMutableArray , how do you shuffle the elements randomly? 12 Answers ...
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When to use ko.utils.unwrapObservable?

I've written a few custom bindings using KnockoutJS. I'm still unsure when to use ko.utils.unwrapObservable(item) Looking at the code, that call basically checks to see if item is an observable. If it is, return the value(), if it's not, just return the value. Looking at the section on Knockout ...
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string.charAt(x) or string[x]?

Is there any reason I should use string.charAt(x) instead of the bracket notation string[x] ? 6 Answers ...
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What is the purpose of Verifiable() in Moq?

What is the purpose of Verifiable() ? 2 Answers 2 ...
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Capistrano - clean up old releases

Usually when using capistrano, I will go and manually delete old releases from a deployed application. I understand that you can run cap deploy:cleanup but that still leaves 5 releases. Is this it's intended purpose? Is there another way to cleanup old releases to just 1 previous deploy? ...
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Creating an empty bitmap and drawing though canvas in Android

I'd like to create an empty bitmap and set a canvas to that bitmap and then draw any shape on the bitmap. 2 Answers ...
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Resolving a 'both added' merge conflict in git?

I'm rebasing in git, and one conflict I get is 'both added' - that is, exactly the same filename has been added independently in my branch, and in the branch I'm rebasing on. git status tells me: ...
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How can I select item with class within a DIV?

I have the following HTML: 5 Answers 5 ...
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Android customized button; changing text color

I made a button that changes the background drawable on different states, this way: 5 Answers ...