ruby_structure_benchmark.rb

require 'benchmark'
require 'ostruct'

## OpenStruct inline
# cars = []
# time = Benchmark.measure do
#   250_000.times do
#     car = OpenStruct.new
#     car.wheel = 4
#     car.mileage = rand((1..100_000))
#     cars << car
#   end
# end
# puts time
# 2.870059   0.321230   3.191289 (  3.191373)

## Struct
# car_struct = Struct.new(:wheels, :mileage)
# cars = []
# time = Benchmark.measure do
#   250_000.times do
#     cars << car_struct.new(4, rand((1..100_000)))
#   end
# end
# puts time
# 0.042372   0.001419   0.043791 (  0.043788)

## Struct inline
# cars = []
# time = Benchmark.measure do
#   250_000.times do
#     car_struct = Struct.new(:wheels, :mileage)
#     cars << car_struct.new(4, rand((1..100_000)))
#   end
# end
# puts time
# 0.929561   0.165006   1.094567 (  1.098186)

## Hash
# cars = []
# time = Benchmark.measure do
#   250_000.times do
#     cars << { wheels: 4, mileage: rand((1..100_000)) }
#   end
# end
# puts time
# 0.908825   0.139471   1.048296 (  1.048432)

## Data (immutable struct, since 3.2)
# car_data = Data.define(:wheels, :mileage)
# cars = []
# time = Benchmark.measure do
#   250_000.times do
#     cars << car_data.new(4, rand((1..100_000)))
#   end
# end
# puts time
# 0.073115   0.002047   0.075162 (  0.075214)