>>> Hi,
>>> I'm playing around with ruby trying to understand whats going on, and
>>> here is something I don't understand.
>>> class ZNum
>>>   def initialize(n)
>>>     @n=n
>>>   end
>>>   def to_s
>>>     self.class
>>>   end
>>> end
>>> n = ZNum.new(1234)
>>> puts n            # prints #<ZNum:0xb75dfcc8>
>>> puts n.to_s     # prints ZNum
>>> In both cases it uses ZNum#to_s, but the results are different. Why?
>> Because puts will revert to something else (likely #inspect) if the
>> result of to_s is not String.

>> irb(main):001:0> class Foo
>> irb(main):002:1> def to_s; self.class.to_s end
>> irb(main):003:1> end
>> => nil
>> irb(main):004:0> puts Foo.new
>> Foo
>> => nil

>> Kind regards

>>         robert

> My understanding of puts is that it puts the result of to_s.
> puts n and puts n.to_s are the same then and should in my example
> print the same.