Data update

Task/Symmetric-difference/Gleam/symmetric-difference.gleam

@@ -0,0 +1,11 @@
+import gleam/set
+
+pub fn main() -> Nil {
+  let seta = set.from_list(["John", "Bob", "Mary", "Serena"])
+  let setb = set.from_list(["Jim", "Mary", "John", "Bob"])
+  let _a_union_b = set.union(seta, setb)
+  let _a_intersection_b = set.intersection(seta, setb)
+  let symmetric_difference = set.symmetric_difference(seta, setb)
+  set.to_list(symmetric_difference) |> echo
+  Nil
+}