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