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adymo/iterator_each_with_index.rb

Last active January 27, 2016 16:41
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Example of each_with_index iterator creating extra objects
Raw
iterator_each_with_index.rb
GC.disable
before = ObjectSpace.count_objects
Array.new(10000).each do |i|
[0,1].each_with_index do |j, index|
end
end
after = ObjectSpace.count_objects
puts "# of arrays: %d" % (after[:T_ARRAY] - before[:T_ARRAY])
puts "# of extra Ruby objects: %d" % (after[:T_NODE] - before[:T_NODE])
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