Benchmark: timing 5000 iterations of memory, no_memory...
    memory:  1 wallclock secs ( 1.13 usr +  0.00 sys =  1.13 CPU) @ 4424.78/s (n=5000)
 no_memory:  1 wallclock secs ( 0.80 usr +  0.00 sys =  0.80 CPU) @ 6250.00/s (n=5000)