From: Dave Burt <dave@...>
Date: 2005-04-19T06:34:37+09:00
Subject: Re: exclude min value in Range

Floats aren't that accurate - be careful when comparing them (see recent 
thread "when 1.6 != 1.6? -- newbie"). Don't rely on the difference between 
".." and "..." ranges when dealing with floats.

Pick a number (let's call it epsilon) that is smaller than the smallest 
delta you care about, and use that.

Float::EPSILON, the smallest possible difference between any two floats, is 
about 2e-16. You need to use a number bigger than that.

EPSILON = 1e-8
range = (0.0 + EPSILON .. 1.0 - EPSILON)

Cheers,
Dave


"Brian Buckley" <briankbuckley@gmail.com> wrote in message 
news:a7b31d7105041813525c1e9b8c@mail.gmail.com...
Hello,

Is there a way to create a Range object which excludes the min value when
values in the Range are continuous? (If the values were discrete one could
just start with the succ value.)

For example, range = (0.0...1.0) is a range of Floats that includes the
value 0.0. How would one create such a Range but which excluded 0.0?

Thanks from a relatively new user of ruby,

Brian