I know from experience that accessing individual bits in Perl ... is far slower than unpacking integers from a packed array.

Using bitvectors in pure Perl can be fast. See Tuning Algorithm::Diff and LCS::BV. LCS::BV is a little faster than Algorithm::Diff::XS in some cases.

Returning AoA is the most convenient for further processing. Will see, how bitmaps or packed perform on e.g. a Center Star Alignment using the LCS as input.

In reply to Re^6: Faster creation of Arrays in XS? by wollmers
in thread Faster creation of Arrays in XS? by wollmers

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