From: "Lucas L." <lucaslevin@...>
Date: 2008-06-15T14:16:50+09:00
Subject: Re: Binary string packing/unpacking issues

Robert Klemme wrote:
> With Ruby 1.8 you can easily manipulate individual bytes directly:
> 
> irb(main):006:0> s="abc"
> => "abc"
> irb(main):007:0> s[2]
> => 99
> irb(main):008:0> s[2].to_s 2
> => "1100011"
> irb(main):009:0> s[2] |= 4
> => 103
> irb(main):010:0> s
> => "abg"
> irb(main):011:0> s[2].to_s 2
> => "1100111"

How can I replace portions of a packed binary string this way?
I know with a normal string it is easy:
irb(main):001:0> s = "abcdef"
=> "abcdef"
irb(main):002:0> s[0..2] = "cba"
=> "cba"
irb(main):003:0> s
=> "cbadef"

But I can't figure out how to do it with binary.

Thanks
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