Data update

Task/Inheritance-Single/Pluto/inheritance-single.pluto

@@ -0,0 +1,30 @@
+class Animal end
+
+class Dog extends Animal
+    function type() return "Dog" end
+end
+
+class Cat extends Animal
+    function type() return "Cat" end
+end
+
+class Labrador extends Dog
+    function type() return "Labrador" end
+end
+
+class Collie extends Dog
+    function type() return "Collie" end
+end
+
+local animals = {new Dog(), new Cat(), new Labrador(), new Collie()}
+for animals as a do
+    print($"{a:type()} is an Animal = {a instanceof Animal}")
+end
+print()
+for animals as a do
+    print($"{a:type()} is a Dog = {a instanceof Dog}")
+end
+print()
+for animals as a do
+    print($"{a:type()} is a Cat = {a instanceof Cat}")
+end