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Proper way to renew distribution certificate for iOS

My distribution certificate is expiring on June 7th, along with all of my provisioning files. How do I properly renew it? Should I revoke it now and request a new one? If I do that than will all my live apps be taken down? ...
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What is “lifting” in Haskell?

I don't understand what "lifting" is. Should I first understand monads before understanding what a "lift" is? (I'm completely ignorant about monads, too :) Or can someone explain it to me with simple words? ...
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Enum String Name from Value

I have an enum construct like this: 12 Answers 12 ...
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Running multiple AsyncTasks at the same time — not possible?

I'm trying to run two AsyncTasks at the same time. (Platform is Android 1.5, HTC Hero.) However, only the first gets executed. Here's a simple snippet to describe my problem: ...
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How to create a string with format?

I need to create a string with format which can convert int, long, double etc. types into string. Using Obj-C, I can do it via below way. ...
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WebKit issues with event.layerX and event.layerY

I just noticed that I get tons of deprecated warnings in the latest (canary) build of Chrome. 9 Answers ...
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What is the “Execute Around” idiom?

What is this "Execute Around" idiom (or similar) I've been hearing about? Why might I use it, and why might I not want to use it? ...
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Is System.nanoTime() completely useless?

As documented in the blog post Beware of System.nanoTime() in Java , on x86 systems, Java's System.nanoTime() returns the time value using a CPU specific counter. Now consider the following case I use to measure time of a call: ...
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TSQL - Cast string to integer or return default value

Is there a way in T-SQL to cast an nvarchar to int and return a default value or NULL if the conversion fails? 8 Answers ...
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How do I install a plugin for vim?

I'd like to try the plugin for Vim linked below. It adds syntax highlighting for .haml and (perhaps) .sass files. 5 Ans...