From: Logan Capaldo <logancapaldo@...>
Date: 2007-08-14T10:40:00+09:00
Subject: Re: Can a lambda or Proc object yield a value to a block?

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On 8/13/07, Mick Macamhlaoibh <mick.macamhlaoibh@gmail.com> wrote:
>
> I've searched quite a bit on the web and through "Programming Ruby - the
> Pragmatic Programmer's Guide" and I can't find a satisfactory answer to
> the question:
>
> Can a lambda or Proc object yield a value to a block?


Short answer,  no, not yet. (You can in 1.9 by using the & syntax)

You actually can use yield in a block, you just need to realize it's the
yield of the enclosing scope:

def example
  a_proc = lambda { yield "Hi" }

  if block_given?
    a_proc.call
  end
end

example { |x| puts x }

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