Benchmark of count vs. length in Ruby

Count vs. Length

require 'rubygems'
require 'benchmark'

array = []

1.upto(1000000) { |i| array << i }

Benchmark.bm(7) do |r|
  r.report("Count:") { array.count }
  r.report("Length:") { array.length }
end

#              user     system      total        real
# Count:   0.000000   0.000000   0.000000 (  0.000010)
# Length:  0.000000   0.000000   0.000000 (  0.000006)