From 209f02660f7adf2c313195339a28009d5d756639 Mon Sep 17 00:00:00 2001
From: MaryamZi <maryamziyadm@gmail.com>
Date: Thu, 10 Oct 2024 15:02:25 +0530
Subject: [PATCH] Use unions with nil instead of optional types

---
 examples/unions/unions.bal | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/unions/unions.bal b/examples/unions/unions.bal
index 7da8f1afbc..cd22af6c5a 100644
--- a/examples/unions/unions.bal
+++ b/examples/unions/unions.bal
@@ -20,7 +20,7 @@ public function main() {
     io:println(nameToString(name1));
     io:println(nameToString(name2));
 
-    map<string?> grades1 = {
+    map<string|()> grades1 = {
         math: "80",
         physics: (),
         chemistry: "76"
@@ -58,10 +58,10 @@ function nameToString(Name nm) returns string {
     }
 }
 
-function parseGrades(map<string?> grades) returns map<int>|error {
+function parseGrades(map<string|()> grades) returns map<int>|error {
     map<int> parsedGrades = {};
 
-    foreach [string, string?] [subject, grade] in grades.entries() {
+    foreach [string, string|()] [subject, grade] in grades.entries() {
         // If the `grade` value is `()`, continue on to the next entry.
         if grade is () {
             continue;