$ perl test_if.pl Rate _goto _linear_2 _dispatch _hash _array _goto 1247485/s -- -17% -26% -50% -52% _linear_2 1509714/s 21% -- -11% -40% -42% _dispatch 1688450/s 35% 12% -- -33% -36% _hash 2513434/s 101% 66% 49% -- -4% _array 2621427/s 110% 74% 55% 4% --