Raku regex performance sucks, for one. Let's parse some data into a hash in Perl: %words = ($input =~ /([^\n\t]+)\t(\N+)/g); In Raku, equivalent code wil

Raku regex performance sucks, for one. Let's parse some data into a hash in Perl: %words = ($input =~ /([^\n\t]+)\t(\N+)/g); In Raku, equivalent code will be slower by an order of magnitude or more. The only way I've managed to get comparable performance is to write code like this: use nqp; my str $str = $input; my int $pos = 0; my int $chars = nqp::chars($str); while $pos < $chars { my int $tab = nqp::index($str, "\t", $pos); my int $nl = nqp::index($str, "\n", $tab); %words{nqp::p6box_s(nqp::substr($str, $pos, $tab - $pos))} = nqp::p6box_s(nqp::substr($str, $tab + 1, $nl - $tab - 1)); $pos = $nl + 1; } Generally, the situation has been getting better, though. In contrast to the early days, for $input.lines { my $tab = .index("\t"); %words{.substr(0, $tab)} = .substr($tab + 1); } also performs adequately today.