Ruby named params benchmark

benchmark.rb

require "benchmark/ips"

# Run instructions
# 
#   gem install benchmark-ips
#   ruby benchmark.rb

def with_named_params(a:, b:)
  a + b
end

def without_named_params(a, b)
  a + b
end

def without_named_params_hash(h)
  h[:a] + h[:b]
end

Benchmark.ips do |x|
  x.report("named") do
    with_named_params(a: 1, b: 2)
  end

  x.report("arguments") do
    without_named_params(1, 2)
  end

  x.report("hash") do
    without_named_params_hash(a: 1, b: 2)
  end

  x.compare!
end

Run on a MacBookPro11,5 Intel Core i7 2,5 GHz

Warming up --------------------------------------
               named   122.925k i/100ms
           arguments   135.041k i/100ms
                hash    77.049k i/100ms
Calculating -------------------------------------
               named      5.876M (± 6.5%) i/s -     29.256M
           arguments      7.742M (± 7.3%) i/s -     38.487M
                hash      1.545M (± 4.2%) i/s -      7.782M

Comparison:
           arguments:  7741807.6 i/s
               named:  5875621.0 i/s - 1.32x slower
                hash:  1545264.9 i/s - 5.01x slower