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In Ruby Arrays are also Queues

Published 2009-12-25
In Ruby it is safe to add an element to the end of an array during iteration.

a = [0,1,2]
a.each do |b|
  puts b
  if 1 == (b % 2)
    a << a.last + 1
  end
end
Ranges as are not arrays. 
a = (0..2)

By AJ ONeal

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