s:  timethis 100000:  1 wallclock secs ( 0.51 usr +  0.00 sys =  0.51 CPU) @ 195694.72/s (n=100000)
tr: timethis 100000:  2 wallclock secs ( 1.68 usr +  0.00 sys =  1.68 CPU) @ 59453.03/s (n=100000)