From: Robert Klemme <shortcutter@...>
Date: 2007-05-11T00:40:05+09:00
Subject: Re: Trouble using string.tr()

On 10.05.2007 17:23, Todd Burch wrote:
> Note, the version I'm showing has the backslash.  It fails with or 
> without it. (and I'm not even certain that \> is even valid!!)

 >> '\>'
=> "\\>"
 >> '>'
=> ">"

The backslash is wrong there.

A more robust way to code this would be to use a HashMap - at least to 
initially associate ASCII with EBCDIC chars.  So, I'd rather to

CHAR_MAP = {
   0XC1 => ?A,
   0xC2 => ?B,
# ...
}

Then you can do:

ebcdic, ascii = [CHAR_MAP.keys, CHAR_MAP.values].map do |set|
   set.inject("") {|st, ch| st << ch}
end

Kind regards

	robert