last

haein1012 · haein1012 · commit fa77ffd5c002 · 2025-04-15T20:16:14.000+09:00
diff --git a/assignment_4/csharp/factorymethod.cs b/assignment_4/csharp/factorymethod.cs
@@ -13,7 +13,7 @@ class Cat : Animal {
 }
 
 class AnimalFactory {
-    public static Animal CreateAnimal(string type) {
+    public static Animal? CreateAnimal(string type) {
         return type switch {
             "dog" => new Dog(),
             "cat" => new Cat(),

Original file line number	Diff line number	Diff line change
`@@ -13,7 +13,7 @@ class Cat : Animal {`
`13`	`13`	`}`
`14`	`14`
`15`	`15`	`class AnimalFactory {`
`16`		`- public static Animal CreateAnimal(string type) {`
	`16`	`+ public static Animal? CreateAnimal(string type) {`
`17`	`17`	`return type switch {`
`18`	`18`	`"dog" => new Dog(),`
`19`	`19`	`"cat" => new Cat(),`