FWIW this issue was noticed today:
https://irclog.perlgeek.de/perl6/2017-12-16#i_15587006
On 2016-04-11 20:40:43, ddgr...@gmail.com wrote:
> '@array[0, 3, 7]' is much slower than '(@array[0], @array[3], @array[7])'
>
>
> time perl6 -e 'my @a = ^500;my @f;my $s = @a.elems;loop (my $i1 = 0; $i1 <
> $s-1; $i1++) { loop (my $i2 = $i1+1; $i2 < $s; $i2++) { @f.push(@a[$i1,
> $i2]) } };'
>
> real 0m14.974s
> user 0m14.947s
> sys 0m0.017s
>
>
> time perl6 -e 'my @a = ^500;my @f;my $s = @a.elems;loop (my $i1 = 0; $i1 <
> $s-1; $i1++) { loop (my $i2 = $i1+1; $i2 < $s; $i2++) { @f.push((@a[$i1],
> @a[$i2])) } };'
>
> real 0m0.897s
> user 0m0.877s
> sys 0m0.017s
>
>
> With Rakudo version 2016.03 built on MoarVM version 2016.03
>
> Dan
