Add "$#ret = $len -1" at line 64 for better performance. For a 100*65*20 set, benchmark results are: Benchmark: timing 10 iterations of new, old... new: 16 wallclock secs (15.59 usr + 0.09 sys = 15.68 CPU) @ 0.64/s (n=10) old: 21 wallclock secs (20.16 usr + 0.10 sys = 20.26 CPU) @ 0.49/s (n=10)

In reply to Re: Cartesian Cross-Products by Anonymous Monk
in thread Cartesian Cross-Products by japhy

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