No.
$ irb -r set
1.9.3p125 :001 > set = ObjectSpace.each_object(Set).to_set
=> #<Set: {#<Set: {...}>}>
1.9.3p125 :002 > set.include?(set)
=> false
However, the Enumeration of all Enumerations does contain itself.
1.9.3p125 :001 > e = ObjectSpace.each_object(Enumerator) => #<Enumerator: ObjectSpace:each_object(Enumerator)> 1.9.3p125 :002 > e.include?(e) => true
Why this is so is left as an exercise to the reader.
About the Author
Bitnami-packaged open source software is loved by developers for its ease of use, which enables developers to directly pull a Bitnami package and seamlessly start using it with little effort.
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