From: Simon Strandgaard <neoneye@...>
Date: 2003-11-26T23:07:12+09:00
Subject: Re: turning a string into array of ASCII bytes

On Wed, 26 Nov 2003 22:44:37 +0900, Peter wrote:

>> What is the shortest, most straightforward way (without temporary
>> variables, etc)?
>>
>> My best route is now "1234".split(//).collect{|c|c[0]} but I'm sure
>> there is a much better way. Also it's a bit slow.
> 
> irb(main):003:0> "1234".unpack("c*")
> => [49, 50, 51, 52]
 


Another possible solution could be (if you use Ruby-1.8.1):

server> ruby a.rb
["78", "79", "7a"]
server> cat a.rb 
require 'enumerator'
str = "xyz"        
enum = Enumerable::Enumerator.new(str, :each_byte)
p enum.map {|b| '%02x' % b } #=> ["78", "79", "7a"]
server>

--
Simon Strandgaard