From: Robert Dober <robert.dober@...>
Date: 2007-03-01T20:48:32+09:00
Subject: Re: default passed block for method

On 3/1/07, Niko <niko@kingtong.org> wrote:
>
> Hi all,
>
> I'm trying to define the missing block given in the context of the
> method to avoid the block_given? test on each iteration for yield call.
>
>   def self.list_of_relationships(relations, source)
>     # missing_block_that_yield_would_call = lambda { || true } unless
> block_given?
>     relations.map do |relation|
>       if yield(peer = relation.send(source))
>         [peer.display_name, peer.id]
>       end
>     end.compact
>   end
>
>
> Thanks for your help
>
> niko
>
>
Is the following pattern better for you?
def a &blk
	blk ||= proc{true}
	blk.call
end

a do
	puts "Nice"
end
puts a

HTH
Robert
-- 
We have not succeeded in answering all of our questions.
In fact, in some ways, we are more confused than ever.
But we feel we are confused on a higher level and about more important things.
-Anonymous