From: "Michael W. Ryder" <_mwryder@...>
Date: 2007-04-30T12:00:13+09:00
Subject: Re: Swapping characters in a string

Peter Seebach wrote:
> In message <F5cZh.387091$5j1.283606@bgtnsc04-news.ops.worldnet.att.net>, "Michael W. Ryder" wri
> tes:
>> Is there any way in Ruby, short of stepping through a string character 
>> by character, to swap two characters?  For example, if I want to replace 
>> all of the commas with periods and periods with commas.
> 
> Shouldn't String#tr do it?
> 
> foo.tr!(',.', '.,')
> 
> -s
> 
Yes that works fine.  For some reason when I saw that method I didn't 
think it could swap characters.  That's what I get for not experimenting 
first.  Thanks for the help.