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Bug #140 » set_bench.rb

NoKarma (Arthur Schreiber), 06/11/2008 09:03 AM

 
require "set"
require "benchmark"

set1 = Set[*(0..1000).to_a]
set2 = Set[*(0..1000).to_a]

sset1 = SortedSet[*(0..1000).to_a]
sset2 = SortedSet[*(0..1000).to_a]

puts "Without patch:"
puts ""
puts "Set#== with Set: #{Benchmark.measure { 300.times { set1 == set2 } }}"
puts "Set#== with SortedSet: #{Benchmark.measure { 300.times { set1 == sset1 } }}"
puts "SortedSet#== with SortedSet: #{Benchmark.measure { 300.times { sset1 == sset2 } }}"

class Set
def ==(other)
if self.equal?(other)
true
elsif other.instance_of?(self.class)
@hash == other.instance_variable_get(:@hash)
elsif other.is_a?(Set) && self.size == other.size
other.all? { |o| @hash.include?(o) }
else
false
end
end
end

puts ""
puts "With patch:"
puts ""
puts "Set#== with Set: #{Benchmark.measure { 300.times { set1 == set2 } }}"
puts "Set#== with SortedSet: #{Benchmark.measure { 300.times { set1 == sset1 } }}"
puts "SortedSet#== with SortedSet: #{Benchmark.measure { 300.times { sset1 == sset2 } }}"
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