And yet... Perl is good with its chained operators acting on lists?

    print join '',
        sort { $a cmp $b }
        grep { !$seen{$_}++ } # = uniq
        <STDIN>;

I do not write such Perl code, but I have in the past.

Oh and by the way, it does not look that different from that of Rust. :) I have came across a lot of Rust projects.