On Thu, May 17, 2007 at 12:04:21AM +0900, Jeremy Hinegardner wrote:
> This is bit of a misconception.  The variable "arborfile" in your
> snippet is just a String and Strings are immutable.

Errm?

irb(main):001:0> a = "foo"
=> "foo"
irb(main):002:0> a.object_id
=> -605382622
irb(main):003:0> a << "bar"
=> "foobar"
irb(main):004:0> a.object_id
=> -605382622
irb(main):005:0> a.replace("xxx")
=> "xxx"
irb(main):006:0> a.object_id
=> -605382622