From: Brian Candler <b.candler@...>
Date: 2009-07-06T16:58:58+09:00
Subject: Re: Convert an Character to the ASCII Character Code

Aaron Patterson wrote:
> On Mon, Jul 06, 2009 at 07:32:38AM +0900, John Gregory wrote:
>> 
>> I would still like to know how to get the same results using my current
>> version.
> 
> How about this:
> 
>   "e".getbyte(0)
> 
> and:
> 
>   "e".getbyte(0).to_f

Or:

irb(main):001:0> "e".ord
=> 101

This is a bit different, as it works in terms of codepoints (characters) 
rather than bytes. This won't make a difference if you are using 
US-ASCII only.

irb(main):003:0> "棚".encoding
=> #<Encoding:UTF-8>
irb(main):004:0> "棚".ord
=> 234
irb(main):005:0> "棚".bytesize
=> 2
irb(main):006:0> "棚".getbyte(0)
=> 195
irb(main):007:0> "棚".getbyte(1)
=> 170
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