From: matt@... (Matt Neuburg)
Date: 2012-07-22T12:16:28+09:00
Subject: Re: hex string to bytestring

botp <botpena@gmail.com> wrote:

> On Sun, Jul 22, 2012 at 10:42 AM, Matt Neuburg <matt@tidbits.com> wrote:
> > s = "0x0253000c"
> > output = ""
> > s = s[2..-1]
> > s.split(//).each_slice(2) do |ss|
> >   output << ss.join.hex.chr
> > end
> > p output # => "\002S\000\f"
> >
> > Great, but this seems idiotic.
> 
> well, i dont find that "idiotic" so to speak...
> but try this eg,
> 
> ["0253000C"].pack "H*"
> => "\x02S\x00\f"
> 

Perfect; I had tried unpack but not pack. So this will work for the
strings I am getting:

output = [s[2..-1]].pack("H*")

Thanks! m.

-- 
matt neuburg, phd = matt@tidbits.com <http://www.tidbits.com/matt/>