From: Robert Klemme <shortcutter@...>
Date: 2011-08-16T19:58:32+09:00
Subject: Re: How to create binary data from Ruby

On Tue, Aug 16, 2011 at 12:34 PM, Iņaki Baz Castillo <ibc@aliax.net> wrote:
> Hi, I need to create binary data from Ruby to send via network some
> structure like this:
>
> - field 1:  1 bit
> - field 2:  1 bit
> - field 3:  1 bit
> - field 4:  1 bit
> - field 5:  4 bits
> - field 6:  1 bit
> - field 7:  7 bits
> - field 8:  16 bits
> (and so on)
>
> Which is the proer way to generate such binary data from Ruby?

There are various ways.  Off the top of my head:

1. Use Array#pack with 'B' or 'b'.

2. Use an integer to construct the whole bit data and convert it via
"%032b" % i.

Kind regards

robert

-- 
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