From: Ezra Zygmuntowicz <ezmobius@...>
Date: 2007-02-09T15:30:57+09:00
Subject: Re: How to "pass" the current binding's block to some other method?


On Feb 8, 2007, at 4:33 PM, Lyle Johnson wrote:

> On 2/8/07, Joel VanderWerf <vjoel@path.berkeley.edu> wrote:
>
>> Does this help?
>>
>>    class Foo
>>      def try(x, y, z)
>>        # ... do some other stuff first ...
>>        yield self if block_given?
>>      end
>>
>>      alias old_try try
>>      def try(hash)
>>        old_try(hash[:x], hash[:y], hash[:z]) do
>>          yield self if block_given?
>>        end
>>      end
>>    end
>>
>>    Foo.new.try({}) do puts "trying" end
>
> Ah, yes, that ought to do the trick too. Thanks!
>


def try(x, y, z)
   # ... do some other stuff first ...
    yield self if block_given?
end

alias old_try try

  def try(hash)
     old_try(hash[:x], hash[:y], hash[:z], &yield)
   end


try( :a => 'foo') { puts 'hi' }


Cheers-

-- Ezra Zygmuntowicz 
-- Lead Rails Evangelist
-- ez@engineyard.com
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