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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
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