From: Tanaka Akira <akr@...>
Date: 2010-11-29T14:10:02+09:00
Subject: [ruby-core:33458] Re: [Ruby 1.9-Feature#4068] Replace current standard Date/DateTime library with home_run

2010/11/29 Yukihiro Matsumoto <matz@ruby-lang.org>:

> Availability of undocumented feature on the specific version of
> specific implementation does not assure anything.  If we specify

It is documented.

time.c:
2209: *  _sec_ may have fraction if it is a rational.
2469: *  can be Integer, Float, Rational, or other Numeric.
3174: *     time.to_r -> a_rational
3176: *  Returns the value of <i>time</i> as a rational number of seconds
3258: *  The result is possibly rational.

I described Time can use Rational internally at [ruby-dev:38191].
-- 
Tanaka Akira