That was really good! It partly answers a nagging question I had after doing those speed comparisons between your Math::3Space vector calculations and doing it in PDL, which is still a bit slow in transitioning between Perl-land and C-land. One thing I know, thanks to using cachegrind, is that looking up a PDL object's pdl* spends a lot of time in hv_common, from sv_derived_from via isa_lookup, as called by the typemap-used pdl_SvPDLV.

In your opinion, would using this Perl magic scheme be quicker? And if so, does any hero feel like PR-ing (or just commenting some part-way code on https://github.com/PDLPorters/pdl/issues/451, the PDL performance issue) to make PDL-pointer-getting go quicker? (That issue has my previous research that found the hv_common stuff, and also links to the Math::3Space discussion issue)

In reply to Re^5: Curses-based applications? by etj
in thread Curses-based applications? by sedusedan

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