From: Gavin Kistner <gavin.kistner@...>
Date: 2008-03-27T05:30:49+09:00
Subject: Re: Recent changes in Range#step behavior

From: Yukihiro Matsumoto [mailto:matz@ruby-lang.org] 
> |I ask for validating arguments to the claim that a range is a set of
> |discrete elements. I contend that it is only discrete once it is
> |actually expanded/iterated. It seems more appropriate to have
> |my_range.to_set.include?( foo ) when you truly want to talk about set
> |membership.
> 
> You can use cover? for continuous inclusion check.

Oops. Then I retract my concern. :)

If it doesn't already (I don't have 1.9 here at work), I suggest that
the documentation pages for include?/member? should mention cover? for
those confused by the naming.