From: "ara.t.howard" <ara.t.howard@...>
Date: 2007-10-27T02:23:26+09:00
Subject: Re: Skip the first invocation e.g. skip_first { foo }


On Oct 26, 2007, at 7:15 AM, Brian Adkins wrote:

>>
>> cfp:~ > cat a.rb
>> block = lambda{ block = lambda{ puts 'foo' } }
>> 3.times{ block.call }
>
> Clever :) I've used a similar technique in JavaScript, but I don't
> like defining the code outside of the loop, and it's also not as clear
> as other solutions IMO.
>
>


it's just a building block...  to generalize your idea, now that you  
sketched it out more fully, i'd probably do


cfp:~ > cat a.rb
class Proc
   def skip(n, i = 0) lambda{|*a| call *a if (i += 1) > n } end
end
class Object
   def skip(n, &block) block.skip n end
end

3.times &skip(1){ puts 'foo' }

%w[ a b c ].each_with_index &skip(2){|element, index| p element, index}


cfp:~ > ruby a.rb
foo
foo
"c"
2


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