From: Dave Thomas <Dave@...>
Date: 2002-01-28T06:49:54+09:00
Subject: Re: Subrange of String subclass => invalid object

Tobias Reif <tobiasreif@pinkjuice.com> writes:

> A Foo is a Foo and should stay a Foo, unless an explicit opertation is 
> performed that changes it's class.
> 
> Foo inherits methods from String. When Foo's methods are used, Foos are 
> returned. When the inherited methods are used, Foos still should stay 
> Foos. It's a big surprise if objects become other objects just because 
> inherited methods are called on them.

What should Foo.to_s return?


Dave