From: Michael Kelly <mkelly2002NOSPAM@...>
Date: 2002-01-07T05:16:25+09:00
Subject: [ruby-talk:30364] Re: move index back ward in list.each do {}

On 5 Jan 2002 16:14:38 -0800, kinfe0@netscape.net (Kinfe) wrote:

>   At this point I would like to advance the next index in a.each but
>remain in b.each, another word, b[4] will not become b[5] after the
>a[had advance], how can I do ?

To alter indexes inside a loop I think generally
it's better to use a while or some other simple
loop with counters instead of trying to alter
the behavior of an iterator.   A while loop
like the one below with a few edits should
do what you need

i = 0
j = 0
while (i < a.length) and (j < b.length)
  if a[i] == b[j] # or some other condition
    i += 1 # only advance one index
    next
  end
  i += 1
  j += 1
  #do something on each loop
end


Mike

--

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