Benchmark: timing 10000000 iterations of eq, regexp...
        eq:  7 wallclock secs ( 3.51 usr + -0.01 sys =  3.50 CPU) @ 2857142.86/s (n=10000000)
    regexp: 22 wallclock secs (10.15 usr +  0.13 sys = 10.28 CPU) @ 972762.65/s (n=10000000)