>> s = "Ruby" => "Ruby" >> t = s => "Ruby" >> t[-1] = "" => "" >> print s >> t = "Java" => "Java" >> print s, t
>> x = "hello" => "hello" >> x.id (irb):97: warning: Object#id will be deprecated; use Object#object_id => 2149253820 >> x.object_id => >> x.__id__ =>
hash
proveído por la clase Object
?