benchmark.rb

require 'fruity'

compare do
  rubylovely {
    a3 = [["a", "b"], ["a","c"], ["b","c"], ["b", "a"], ["c","b"],["b", "a"]]
    a3.each {|x| a3.delete(x.reverse) if a3.include? x.reverse}
  }

  padde {
    a3 = [["a", "b"], ["a","c"], ["b","c"], ["b", "a"], ["c","b"],["b", "a"]]
    a3.uniq!(&:sort!)
  }
end

On my machine this produces

Running each test 256 times. Test will take about 1 second.
padde is faster than rubylovely by 10.000000000000009% ± 10.0%