From: "David A. Black" <dblack@...>
Date: 2004-10-30T19:22:50+09:00
Subject: Re: reuse passed proc later?

On Sat, 30 Oct 2004, David Gurba wrote:

> Hello Everyone,
> 
> I'm new to Ruby and some of its features...
> 
> I want to do the following (with as little modfication as necessary):
> 
> call a passed block to a function at some later time...  Eg.
> 
> class A
> 
>   def foo(&block)
>     @func = block
>   end
> end
> 
> a = A.new
> num = a.func.call { print "12" }
> 
> ...but func is an unknown method, and attr_accessor :func doesn't help either....
> 
> any nice solution?

In your example you never call foo, so @func never gets assigned to.
Is this something like what you want to do?

  class A

    def func(&block)
      @func ||= block
    end
  end

  a = A.new
  a.func { 12 }

  num = a.func.call
  puts num         # 12


David

-- 
David A. Black
dblack@wobblini.net