1void bar ((unowned string)[] str) { 2} 3 4void foo () { 5 unowned string s1 = "ABC", s2 = "CDE"; 6 bar ({s1, s2}); 7 var s3 = "%s%s".printf (s1, s2); 8} 9 10void main () { 11 foo (); 12} 13