Vanilla, Chocolate and Strawberry

multi-surface language: different surface syntaxes for different communities

SELECT for the SQL folks, corporate style

select $a / name
where
    $a isa person &
    is-creator-of (creator: $a, opus: $o, ...) &
    $o isa document

FLWOR for the XML-heads, integration into XML application servers

for $a in %map // person
where
    is-creator-of (creator: $a, opus: $o, ...) &
    $o isa document
return
    ($a / name)

Path Expressions for the beardy Perl/UNIX hard-core engineer

%map // person [ . <- creator -> opus ] / name