Added lot more example code. (0.39.8).

examples/basics/collections.fun

@@ -0,0 +1,30 @@
+#!/usr/bin/env fun
+
+/*
+ * This file is part of the Fun programming language.
+ * https://fun-lang.xyz/
+ *
+ * Copyright 2026 Johannes Findeisen
+ * Licensed under the terms of the Apache-2.0 license.
+ * https://opensource.org/license/apache-2-0
+ *
+ * Added: 2026-03-25
+ */
+
+// Arrays and maps basics
+
+arr = [1, 2, 3]
+push(arr, 4)
+print("arr size=" + to_string(len(arr)) + ", last=" + to_string(arr[3]))
+
+user = {"name": "Lin", "age": 29}
+user["city"] = "Paris"
+for k in keys(user)
+  print(k + ": " + to_string(user[k]))
+
+/* Expected output:
+arr size=4, last=4
+age: 29
+name: Lin
+city: Paris
+*/