From: Brian Candler <b.candler@...>
Date: 2009-04-20T17:43:18+09:00
Subject: Re: ruby1.9 and the retry keyword

Or using throw/catch. You can also factor out the pattern, for example:

def retryable
  loop do
    catch(:retry) do
      yield
      return
    end
  end
end

ary = [:foo, :bar, :baz, :foo]

def foo(e)
  :bom
end

retryable do
  ary.each { |e|
    case e
    when :foo
      ary[ary.index(e)] = foo(e)
    when :bom
      ary[ary.index(e)] = :foobom # to show retry
    when :baz
      ary[ary.index(e), 12] = [:flublu]
      throw :retry
    end
  }
end
p ary
__END__
[:foobom, :bar, :flublu]
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