# File lib/em/iterator.rb, line 147 def map(foreach, after) index = 0 inject([], proc{ |results,item,iter| i = index index += 1 is_done = false on_done = proc{ |res| raise RuntimeError, 'already returned a value for this iteration' if is_done is_done = true results[i] = res iter.return(results) } class << on_done alias :return :call def next raise NoMethodError, 'must call #return on a map iterator' end end foreach.call(item, on_done) }, proc{ |results| after.call(results) }) end