From: George Koehler <xkernigh@...>
Date: 2012-01-17T07:09:16+09:00
Subject: [ruby-core:42157] [ruby-trunk - Feature #5899] chaining comparsions.


Issue #5899 has been updated by George Koehler.


=begin
What is a good way to do chained comparison in Ruby?

My best attempt, so far, is
 [1, 2, 3, 4].each_cons(2).all? {|a, b| a < b}
=end

----------------------------------------
Feature #5899: chaining comparsions.
https://bugs.ruby-lang.org/issues/5899

Author: Ondrej Bilka
Status: Open
Priority: Normal
Assignee: 
Category: Joke
Target version: 


Migration from python to ruby is problematic because ruby lacks certain features.
Most important python advantage is chained comparison
We must wrap every comparison like described below.

puts "yes" if 1<2<3<4

class Fixnum
  def <(a)
    ((self<=>a)==-1)&&a
  end
end
class FalseClass
  def <(a)
    false
  end
end




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