From: Brian Candler <b.candler@...>
Date: 2010-10-23T21:25:58+09:00
Subject: Re: Why no yield in 1.9.2 blocks?

Josh Cheek wrote in post #956495:
> I always figured it was because it was enclosing its environment, and
> having
> yield in the block and the environment could bet ambiguous.

Yes, I believe that's the case. Consider:

  def foo             # <- block passed implicitly
    bar do |&baz|
      yield 123       # <- invokes the outer block
    end
  end

I think of 'yield' like 'return'. 'yield' invokes the block passed in to 
the enclosing method, and 'return' returns from the enclosing method.

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