From: Matthew Kerwin <lists@...>
Date: 2013-02-15T17:54:08+09:00
Subject: Re: skip iteration in each loop

Joel Pearson wrote in post #1097034:
> I doubt this is the best method, but here's one way to do it
>
> irb(main):001:0> persons = [1,2,3,4,5,6,7,8]
> => [1, 2, 3, 4, 5, 6, 7, 8]
> irb(main):002:0> skip_next = 0
> => 0
> irb(main):003:0> persons.each do |x|
> irb(main):004:1*   if x == 2
> irb(main):005:2>     skip_next = 2
> irb(main):006:2>   elsif skip_next > 0
> irb(main):007:2>     skip_next -= 1
> irb(main):008:2>     next
> irb(main):009:2>   end
> irb(main):010:1>   p x
> irb(main):011:1> end
> 1
> 2
> 5
> 6
> 7
> 8

And, rearranging that slightly:

    [].tap do |a|
      skip_next = 0
      persons.each do |p|
        if skip_next > 0
          skip_next -= 1
          next
        end
        a << p
        skip_next = 2 if p == 2
      end
    end

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