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SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)

Sometimes when I run an application on device from Xcode I would try to access the keychain but fail due to error -34018. This doesn't match any of the documented keychain error codes and can't be consistently reproduced. (happens maybe 30% of the time, and it's not clear to me why it happens). What...
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How can I pair socks from a pile efficiently?

Yesterday I was pairing the socks from the clean laundry and figured out the way I was doing it is not very efficient. I was doing a naive search — picking one sock and "iterating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average. ...
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How do you convert a byte array to a hexadecimal string, and vice versa?

How can you convert a byte array to a hexadecimal string, and vice versa? 45 Answers 4...
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How do I record audio on iPhone with AVAudioRecorder?

Now that iPhone 3.0 SDK is public, I think I can ask this question for those of you that have already been playing with the 3.0 SDK. I want to record audio in my application, but I want to use AVAudioRecorder and not the older way of recording like the example SpeakHere shows. There are not any...
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What is the fastest way to send 100,000 HTTP requests in Python?

I am opening a file which has 100,000 URL's. I need to send an HTTP request to each URL and print the status code. I am using Python 2.6, and so far looked at the many confusing ways Python implements threading/concurrency. I have even looked at the python concurrence library, but cannot figure ...
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How to convert an ArrayList containing Integers to primitive int array?

I'm trying to convert an ArrayList containing Integer objects to primitive int[] with the following piece of code, but it is throwing compile time error. Is it possible to convert in Java? ...
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Should I use SVN or Git? [closed]

I am starting a new distributed project. Should I use SVN or Git, and why? 21 Answers ...
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Getting full JS autocompletion under Sublime Text

I just installed the Sublime Text under Windows Vista, and even following the advice given in this post , namely to explicitly set View > Syntax > JavaScript > JavaScript , I only see suggestions based on what I have previously typed. I even installed the SublimeCodeIntel plug-in , to no...
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Fastest way to extract frames using ffmpeg?

Hi I need to extract frames from videos using ffmpeg.. Is there a faster way to do it than this: 6 Answers ...
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The $.param( ) inverse function in JavaScript / jQuery

Given the following form: 18 Answers 18 ...