class Point { method distance {...} method union {...} } my @points = [Point.new, Point.new, Point.new]; my $top = 3; # One line: syntax is OK but too long @points.combinations(2).sort(-> [$a, $b] { $a.distance($b) })[^$top].map(-> [$a, $b] { $a.union($b) }); # Trying to split methods per line: # Unable to parse expression in bracketed infix; couldn't find final ']' (corresponding starter was at line 18) # at /home/glot/main.raku:18 # ------> [32m.sort(-> [$a, $b] { $a.distance($b) })[^[33m⏏[31m$top][0m @points .combinations(2) .sort(-> [$a, $b] { $a.distance($b) })[^$top] .map(-> [$a, $b] { $a.union($b) }) }); } # Doesn't work either # Malformed postfix call (only basic method calls that exclusively use a dot can be detached) # at /home/glot/main.raku:29 # ------> [32m .[33m⏏[31m[^$top][0m @points .combinations(2) .sort(-> [$a, $b] { $a.distance($b) }) .[^$top] .map(-> [$a, $b] { $a.union($b) }) }); # Using the feed operator, I need something to allow feeding into a block? # Because I can't do `==> { .[^$top] }` directly (feed into a block?) # Or either `==> *.[^$top]` (feed into a WhateverCode?) # So I made this then() routine sub then(&code, $_) { code($_) } @points.combinations(2) ==> sort(-> [$a, $b] { $a.distance($b) }) ==> then({ .[^$top] }) ==> map(-> [$a, $b] { $a.union($b) });