From: Matt Mongeau <lists@...>
Date: 2013-02-26T04:50:39+09:00
Subject: Re: Ruby String directives

Kumar,

Use cases: A good use case is dealing with reading or writing specially 
formatted files. For example:

http://en.wikipedia.org/wiki/BMP_file_format#Bitmap_file_header

I don't know about the use of the directives because I haven't had to 
use them in the 8 years I've been doing Ruby.

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