beck.rb

# run ./beck.rb

require 'benchmark'

arr = []

10_000_000.times do |t|
  arr.push t
end

DEFAULT = 10_000_000

Benchmark.bm do |x|
  x.report 'usando map----' do
    DEFAULT.times do |num|
      arr.method(:map)
    end
  end

  x.report 'usando collect' do
    DEFAULT.times do |num|
      arr.method(:collect)
    end
  end
end

reultado.txt

% ruby ./beck.rb
       user     system      total        real
usando map----  9.800000   0.270000  10.070000 ( 10.082111)
usando collect 16.710000   0.030000  16.740000 ( 16.744178)