From: Tim Hunter <rmagick@...>
Date: 2007-10-27T03:42:36+09:00
Subject: Re: background on String#unpack?

Giles Bowkett wrote:
>> > encryption code or something related, but I'm not sure. Just
>> > wondering, what's it for? Who uses it, and why?
>>
>> Array#pack and String#unpack are useful for handling _binary_ network
>> protocols and file formats.
> 
> So would this be accurate? Use cases would include implementing
> graphics formats and extracting text from proprietary-format word
> processor files?
> 

I had occasion to use these methods in code dealing with IPTC (image) 
metadata.

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