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Feature #5899

Updated by matz (Yukihiro Matsumoto) over 3 years ago

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.

```ruby
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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