> Obviously calculating the sequences for numbers up to 1,000,000 without some optimization would be painfully or maybe unworkably slow

Interestingly, the difference is about 15%, see my blogpost about the same task.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re: Optimizing with Caching vs. Parallelizing (MCE::Map) by choroba
in thread Optimizing with Caching vs. Parallelizing (MCE::Map) by 1nickt

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