From: prijutme4ty@...
Date: 2014-12-24T19:24:55+00:00
Subject: [ruby-core:67105] [ruby-trunk - Feature #10641] [Open] Introduce	Fixnum#finite?

Issue #10641 has been reported by Ilya Vorontsov.

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Feature #10641: Introduce Fixnum#finite?
https://bugs.ruby-lang.org/issues/10641

* Author: Ilya Vorontsov
* Status: Open
* Priority: Normal
* Assignee: 
* Category: core
* Target version: 
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Hello,
I propose to introduce Fixnum#finite? and Bignum#finite? methods. Use case for this is following:

Interval = Struct.new(:from, :to) do
  def finite?
    from.finite? && to.finite?
  end
end
# this works
Interval.new(1.5, 1000.0).finite?
Interval.new(1.5, Float::INFINITY).finite?
# but this fails due to absence of Fixnum#finite?
Interval.new(1, 3).finite?
Interval.new(1, Float::INFINITY).finite?

It looks natural that Fixnum#finite? should always return true. I didn't worked extensively with Bignum-s, but probably Bignum#finite? should also always be true.



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