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Quick way to convert hex string represented in ASCII to binary?

Subject: Quick way to convert hex string represented in ASCII to binary?
From: Ken Tozier <email@hidden>
Date: Sat, 29 Jul 2006 03:20:08 -0400
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Hi

I'm storing aliases in a database by converting the alias records to NSData objects and then getting a description of these objects for storage. Is there a quick way to turn this ascii representation of hex back into binary data? I know I can do it by looping through each character in the string and manually converting it, but I'm wondering if anyone knows of a better way to do it.

Thanks

Ken
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