"Bulat Ziganshin" <bulatz / integ.ru> wrote
....
> thanks. but with Hash.new(...) hash element updated to default value.
> is this difference intended?

No there is a difference ...

---
hash = Hash.new {Hash.new}
hash['a']['b'] = 'c'
hash['a']['b'] = 'c'

ObjectSpace.each_object(Hash) {|hsh|
  puts ([hsh.id, hsh.inspect].join (": "))
}
---
20728500: {"b"=>"c"}
20728824: {"b"=>"c"}
20729328: {}
---


/Christoph