From: Kent Dahl <kentda@...>
Date: 2001-11-05T05:12:18+09:00
Subject: [ruby-talk:24346] Re: block/yield puzzle

A little more explanatory:

p = proc {|a| print " " + a.to_s }
def iter(x)
 	yield x-1; yield x; yield x+1
end

iter(5,&p) #=> 4 5 6
iter(5) &p #=> LocalJumpError: yield called out of block

When you use the & to make a Proc back into a block, you seem to still
have to pass it along as a parameter to the function, you can't just add
it to the back like you normally do with an explicit block.

-- 
<[ Kent Dahl ]>================<[ http://www.stud.ntnu.no/~kentda/ ]>
  )____(stud.techn.;ind.�k.data)||(softwareDeveloper.at(Trustix))_( 
 /"Opinions expressed are mine and not those of my Employer,      "\
( "the University, my girlfriend, stray cats, banana fruitflies,  " )
 \"nor the frontal lobe of my left cerebral hemisphere.           "/