File: array_shift.rb

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require 'benchmark'

Benchmark.bm do |x|
  [10_000,1_000_000,100_000_000].each do |n|
    ary = Array.new(n,0)
    GC.start
    x.report("#{n}:shift"){ ary.shift }
    (0..4).each do |i|
      ary = Array.new(n,0)
      GC.start
      x.report("#{n}:shift(#{i})"){ ary.shift(i) }
    end
  end
end