/
count.rb
82 lines (64 loc) · 1.69 KB
/
count.rb
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# frozen_string_literal: true
# rubocop-performance
# Performance/Count
# see https://github.com/rubocop-hq/rubocop-performance/blob/master/manual/cops_performance.md#performancecount
require 'benchmark_driver'
output = :gruff
versions = ['2.3.8', '2.4.6', '2.5.4', '2.6.3', '2.7.0-preview1']
Benchmark.driver(output: output) do |x|
x.rbenv *versions
x.prelude <<~RUBY
class Elm
attr_accessor :value
def initialize(value)
@value = value
end
end
NUM_ARRAY = [1, 2, 3]
OBJ_ARRAY = [Elm.new(5), Elm.new(4), Elm.new(3), Elm.new(2), Elm.new(5)]
def bad_sample1
NUM_ARRAY.select { |e| e > 2 }.size
end
def bad_sample2
NUM_ARRAY.reject { |e| e > 2 }.size
end
def bad_sample3
NUM_ARRAY.select { |e| e > 2 }.length
end
def bad_sample4
NUM_ARRAY.reject { |e| e > 2 }.length
end
def bad_sample5
NUM_ARRAY.select { |e| e > 2 }.count { |e| e.odd? }
end
def bad_sample6
NUM_ARRAY.reject { |e| e > 2 }.count { |e| e.even? }
end
def bad_sample7
OBJ_ARRAY.select(&:value).count
end
def good_sample1
NUM_ARRAY.count { |e| e > 2 }
end
def good_sample2
NUM_ARRAY.count { |e| e < 2 }
end
def good_sample3
NUM_ARRAY.count { |e| e > 2 && e.odd? }
end
def good_sample4
NUM_ARRAY.count { |e| e < 2 && e.even? }
end
RUBY
x.report %{ bad_sample1 }
x.report %{ bad_sample2 }
x.report %{ bad_sample3 }
x.report %{ bad_sample4 }
x.report %{ bad_sample5 }
x.report %{ bad_sample6 }
x.report %{ bad_sample7 }
x.report %{ good_sample1 }
x.report %{ good_sample2 }
x.report %{ good_sample3 }
x.report %{ good_sample4 }
end