Contents

require 'benchmark'
require 'rspec/expectations'
include RSpec::Matchers

n = 1_000_000
matcher = eq(3)

Benchmark.bm do |x|
  x.report do
    n.times { matcher.clone }
  end
end

__END__

We can do about 1000 clones per ms:

      user     system      total        real
  1.080000   0.030000   1.110000 (  1.120009)

Version data entries

21 entries across 21 versions & 2 rubygems

Version	Path
opal-rspec-1.1.0.alpha3	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-1.1.0.alpha2	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-1.1.0.alpha1	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-1.0.0	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-1.0.0.alpha1	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-0.8.0	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-0.8.0.alpha3	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-0.8.0.alpha2	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-0.8.0.alpha1	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-0.7.1	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-0.7.0	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-0.6.2	rspec-expectations/benchmarks/cloning_matchers.rb
opal-rspec-0.7.0.rc.2	rspec-expectations/upstream/benchmarks/cloning_matchers.rb
opal-rspec-0.6.1	rspec-expectations/benchmarks/cloning_matchers.rb
opal-rspec-0.6.0	rspec-expectations/benchmarks/cloning_matchers.rb
opal-rspec-0.6.0.beta1	rspec-expectations/benchmarks/cloning_matchers.rb
opal-connect-rspec-0.5.0	rspec-expectations/benchmarks/cloning_matchers.rb
opal-rspec-0.5.0	rspec-expectations/benchmarks/cloning_matchers.rb
opal-rspec-0.5.0.beta3	rspec-expectations/benchmarks/cloning_matchers.rb
opal-rspec-0.5.0.beta2	rspec-expectations/benchmarks/cloning_matchers.rb