G'day choroba,

++ Thanks for checking it out.

The results I originally posted were from: Perl 5.38.0; List::Util 1.63; and, Array::Contains 2.8.

I reran the benchmark with the earliest Perl I have to hand: Perl 5.30.0; List::Util 1.5; and, Array::Contains 2.8.

       Rate lua acc
lua 14610/s  -- -4%
acc 15247/s  4%  --

       Rate lua acc
lua 14826/s  -- -2%
acc 15103/s  2%  --

       Rate lua acc
lua 14821/s  -- -3%
acc 15318/s  3%  --
[download]

Those numbers are very close and I'd still consider this to indicate no appreciable difference.

I ran both on:

$ uname -a
CYGWIN_NT-10.0-19045 titan 3.4.7-1.x86_64 2023-06-16 14:04 UTC x86_64 
+Cygwin
[download]

which has the latest 3.4.7 update which I did about two days ago.

Addendum: I just checked those Perl versions with List::Util::XS: XS version installed on both.