Object#inspect's output

[Bertram Scharpf]

Hi,

I want to understand thoroughly how singleton objects are
implemented. I try this:

class C ; end

puts C.inspect # => C
puts class <<C ; self ; end.inspect # => #<Class:C>

Can someone give me a hint what's the difference between the
both objects inspected? Thanks very much in advance.

Bertram

 

[Joel VanderWerf]

Hi,

I want to understand thoroughly how singleton objects are
implemented. I try this:

class C ; end

puts C.inspect # => C
puts class <<C ; self ; end.inspect # => #<Class:C>

Can someone give me a hint what's the difference between the
both objects inspected? Thanks very much in advance.

The second object is the metaclass of C. There's a good explanation of
metaclasses in the PickAxe book.

 

[Bertram Scharpf]

Hi,

Am Donnerstag, 10. Mär 2005, 03:10:57 +0900 schrieb Joel VanderWerf:

The second object is the metaclass of C. There's a good explanation of
metaclasses in the PickAxe book.

Ah, I see.

class C ; def self.clsmeth() end end
# => nil
class <<C ; self ; end.instance_methods - Class.methods
# => ["clsmeth"]

Thanks.

Bertram