From: Hal Fulton <hal9000@...>
Date: 2005-12-02T15:23:27+09:00
Subject: Re: String + Range = Strange

Steve [RubyTalk] wrote:
> Bob Showalter wrote:
> 
>> The point is that even though "aa".."b1" is a valid range, calling 
>> succ repeatedly from the starting point will never yield the endpoint.
> 
> 
> This, I think is the crux of the matter.  It seems to me that given that 
> if "aa".."b1" is a valid range, that calling calling succ on "aa" should 
> logically eventually reach "b1".  I understand that in Ruby, today, it 
> doesn't.

I think that String#succ is of limited usefulness, and will *always* be a
source of strange edge cases like this.

Personally, I think that (perhaps) String ranges should be disallowed as
being mostly nonsensical (unless a rigid order, like character set order,
were imposed).


Hal