From: Bob Showalter <bob_showalter@...>
Date: 2005-11-29T01:15:11+09:00
Subject: Re: [BUG] string range membership

Yukihiro Matsumoto wrote:
> #include? used for range check, #member? was for set membership.  But
> since they have same functionality in Enumerable, some claimed having
> different behaviors in Range was confusing.  I agreed.
> 
> |    Anyway, please let me know if there is anything I can do to help
> |settle this issue.
> 
> All we need is making up good names for each functionality.

How about something like Enumerable#produces?, or Enumerable#yields?

Then perhaps start deprecating Enumerable#member?

So for a range, one could use r.include?(obj) to test for obj between 
the endpoints, and r.yields?(obj) to test whether r.succ ever yields obj.

Enumerable#=== becomes an issue (case statement), right?