From: Rob Lee <robl@...>
Date: 2006-10-19T08:29:25+09:00
Subject: Bitwise operations

Hi,

I have a binary packet stored in a string.  I also have a packet 
specification and I'd like to print the first byte as a hex value to 
check it corresponds to the expected value from the specification 
('7F').  I can't understand how to access the first byte from a string 
(a series of 8 bit bytes I believe).  There don't seem to be any 
bit-shift operators in Ruby for a string - could anybody advise how I go 
about this ?

Thanks

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