From: "Ralph \"PJPizza\" Siegler" <pjpizza@...>
Date: 2005-06-02T01:22:03+09:00
Subject: Re: Method Chaining Issues

On Thu, Jun 02, 2005 at 01:15:22AM +0900, aartist wrote:
> try this:
> string = "I am sold"
> string.sub!('old','new').reverse!;
> puts string
> 
> It works.
> 
> If string didn't contain the word 'old' then it  will fail.
> Is that a nice behavior?
> Can it be changed to work on whatever input?
> 
>

Maybe this just shows that in-place modifying methods that can potentially return nil or an object without needed methods are too dangerous to chain for bullet-proof applications - in this case use .sub and .reverse with tests along the way