He Peter,
The '<<' method is a special case because Ruby allows this to be
called without a connecting '.' for message passing. Your syntax isn't
valid because when the ruby interpreter comes across 'something<<' it
assumes 'something' is the receiver. For example:
class ArrayLike
def <<(item)
...
end
end
array_like = ArrayLike.new
array_like << 'something' # valid
array_like.<<('something') # valid
-Jordan
On Apr 30, 2009, at 2:01 PM, Peter Gumeson wrote:
>
> Hi gang,
>
> I am trying to define a method on an ActiveRecord model that simulates
> the push operator of an array (or enumerable). I was wondering if it's
> possible to do something similar to defining a setter, like this...
>
> def product_tags<<(tag)
> # do some pre processing...
> # save tag to an AR association
> end
>
> My guess is it needs to be implemented with an actual array. Anyone
> have any experience with this? Or do I just have a problem with my
> syntax?
>
> Thanks,
> Peter
> >
---------------------------------------------------------------
Jordan A. Fowler
2928 Fir St.
San Diego, CA 92102
E-mail: [email protected]
Website: http://www.jordanfowler.com
Phone: (619) 339-6752
--~--~---------~--~----~------------~-------~--~----~
SD Ruby mailing list
[email protected]
http://groups.google.com/group/sdruby
-~----------~----~----~----~------~----~------~--~---
