From: David Alan Black <dblack@...>
Date: 2002-02-20T09:36:24+09:00
Subject: Re: Changing String Without Changing The Address

Hello --

On Wed, 20 Feb 2002, Songsu Yun wrote:

> Hi,
> Based on what I have read, it seems that assignment just change the string
> variable to point to the new string object.
> Is it possible to just change the contents of a string object with the
> string variable still pointing to the same string object ?
> Thanks.

Does this address what you're wondering about?


  irb(main):001:0> a = "string"
  "string"
  irb(main):002:0> b = a
  "string"
  irb(main):003:0> a.id
  537736264
  irb(main):004:0> b.id
  537736264                           # a and b are same object
  irb(main):005:0> a.sub!(/i/,'o')    # change a
  "strong"
  irb(main):006:0> b                  # change visible in b
  "strong"
  irb(main):007:0> a.id
  537736264
  irb(main):008:0> b.id
  537736264                           # they're still the same object


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav