From: Joel VanderWerf <vjoel@...>
Date: 2007-02-09T16:40:51+09:00
Subject: Re: How to "pass" the current binding's block to some other method?

Ezra Zygmuntowicz wrote:
> 
> 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' }

Cool, &yield is new to me!

But the OP wanted the following to work too, I think:

try( :a => 'foo')

and this will raise a LocalJumpError in this case...

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407