From: Dan Zwell <dzwell@...>
Date: 2007-05-04T10:38:43+09:00
Subject: Re: Is there a better way to do this?

> I am trying to come up with a "generic" formatting routine so that I 
> could feed it something like sform("123456789", "000-00-0000") or 
> sform("1234567890", "(000) 000-0000") or sform("123456", "00/00/00") and 
> it would work.  I could easily do something like you suggest, and for 
> some cases it might be better, but I want something I can for any number 
> of formats.  Thanks for the input.
> 
> 

welcome.


require 'enumerator'

def sform(num, fmt)
   # convert num to array (of one digit strings):
   num = num.to_enum(:each_byte).map { |code| code.chr }

   # for each zero, replace it with a digit popped off the
   # front of the array of numbers (or characters):
   fmt.gsub(/0/) { num.shift }
end


dan