From: Bob Sidebotham <bob@...>
Date: 2004-09-24T02:15:21+09:00
Subject: "no block given" with closure?

When I execute this code, I get "no block given (LocalJumpError)":

class S
   def initialize(&b1)
     @b1 = b1
   end
   def each
     @b1.call
   end
end

s = S.new {[1,2,3].each {|i| yield i }}.each {|v| puts v}

Changing the implied block/yield combination to an explicit proc object 
works, as follows:

class S
   def initialize(&b1)
     @b1 = b1
   end
   def each(&b2)
     @b1.call(b2)
   end
end

s = S.new { |p| [1,2,3].each { |i| p.call(i) }}.each {|v| puts v}

This prints the expected 3 lines.

This is with ruby 1.8.2 (2004-09-10) [i686-linux]

It's quite possible that I don't understand how this is supposed to work 
:-). Any hints would be appreciated.

Thanks,
Bob Sidebotham