[ruby-core:33636] Re: Why is SyncEnumerator in REXML?

On Dec 7, 2010, at 11:25 PM, James Edward Gray II wrote:

> On Dec 7, 2010, at 3:41 PM, Asher wrote:
> 
>> Would your preference be to direct them to manually iterate each of the enumerators or create their own convenience class? Seems easy enough, but given that SyncEnumerator is there it made sense to me to leave it and move it into the main extension branch.

Alternatively you can use each_with_index on the first object and use the index on the others.

left  = 1..3
right = %w(a b c)

def iterate(left, right)
  left.each_with_index do |item, index|
    yield [item, right[index]]
  end
end

iterate(left, right) do |l, r|
  p [l, r]
end