class_missing ?

[Elias Athanasopoulos]

Hello!

Is there something similar to method_missing for classes?

I.e. overload a method of Object or handle an exception
when a 'Foo.new' is called and class Foo does not exist.

Regards,

 

[Kent S.]

Try this:

$ irb
irb(main):001:0> defined? AClass
=> nil
irb(main):002:0> class AClass; end
=> nil
irb(main):003:0> defined? AClass
=> "constant"
irb(main):004:0>

Cheers,
Kent.

 

[Dmitry V. Sabanin]

Hello!

Is there something similar to method_missing for classes?

I.e. overload a method of Object or handle an exception
when a 'Foo.new' is called and class Foo does not exist.

Try:
# ri const_missing

 

[Mark Hubbart]

Hello!

Is there something similar to method_missing for classes?

I.e. overload a method of Object or handle an exception
when a 'Foo.new' is called and class Foo does not exist.

Something like this?

def Object.const_missing(sym)
Object.const_set( sym, Class.new() )
end
==>nil
Foo.new
==>#<Foo:0x3c408>
Bar.new
==>#<Bar:0x398d4>
Baz.new
==>#<Baz:0x21370>

 

[Elias Athanasopoulos]

Something like this?

def Object.const_missing(sym)
Object.const_set( sym, Class.new() )
end
==>nil
Foo.new
==>#<Foo:0x3c408>
Bar.new
==>#<Bar:0x398d4>
Baz.new
==>#<Baz:0x21370>

Exactly! Thanx (to Dmitry also).

Ruby never fails to surprise - not in the common 'bad' sense - me!

Regards,