From: Sky Yin <sky.yin@...>
Date: 2006-01-15T00:52:41+09:00
Subject: Duration between two days

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According to the Rdoc of Date class, operator '-(x)' is described as:

If x is a Date <http://www.ruby-doc.org/core/classes/Date.html>, return the
number of days between the two dates; or, more precisely, how many days
later the current date is than x.

However, a quick test in irb gives me a weird result:

>require 'date'
true
>a =3D Date.new 2004, 1, 1
#<Date: 4906011/2,0,2299161>
>b =3D Date.new 2004, 1, 3
#<Date: 4906015/2,0,2299161>
>b - a
Rational(2, 1)

Basic math tells me 2/1 =3D 2, so what's the point of returning Rational
instead of Fixnum here?

Thanks.

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