Rails - Feb 2006 - instance_eval and Proc objects

Hi All,

Got a bit of a Ruby question for you.

If I have a function that makes a proc object like this:

def select(selector, &proc)
  el = Element.new
  el.instance_eval proc
end

select("#thing") do
   hide
end

Wat I want to do is evaluate the Proc in the context of el but this
doesn''t work because instance_eval accepts a string or a block and not
a Proc object.  I sense Im barking up the wrong tree here entirely but
Im pretty new to this Ruby game so forgive me.

Any suggestions?

Cheers,

Dan

It''s okay, I worked it out myself:

el.instance_eval &proc

Just like with starred method arguments...

On 2/10/06, Dan Webb <dan@danwebb.net> wrote:
> Hi All,
>
> Got a bit of a Ruby question for you.
>
> If I have a function that makes a proc object like this:
>
> def select(selector, &proc)
>   el = Element.new
>   el.instance_eval proc
> end
>
> select("#thing") do
>    hide
> end
>
> Wat I want to do is evaluate the Proc in the context of el but this
> doesn''t work because instance_eval accepts a string or a block and
not
> a Proc object.  I sense Im barking up the wrong tree here entirely but
> Im pretty new to this Ruby game so forgive me.
>
> Any suggestions?
>
> Cheers,
>
> Dan
>

--
Dan Webb
http://www.danwebb.net