Exercices CM 1

exercice3.ts

@@ -0,0 +1,52 @@
+interface Animal {
+  name: string;
+}
+interface Dog extends Animal {
+  bark: () => void;
+}
+interface Cat extends Animal {
+  meow: () => void;
+}
+const makeNoise = (animal: Animal) => {
+  if (animal instanceof Dog) {
+    // 'Dog' fait uniquement référence à un type mais s'utilise en tant que valeur ici.ts(2693)
+    animal.bark();
+  }
+};
+
+namespace TaggedUnion {
+  interface Dog {
+    kind: "dog"; // Tagged union
+    bark: () => void;
+  }
+  interface Cat {
+    kind: "cat"; // Tagged union
+    meow: () => void;
+  }
+  type Animal = Dog | Cat;
+  const makeNoise = (animal: Animal) => {
+    if (animal.kind === "dog") animal.bark();
+    else animal.meow();
+  };
+  const dog: Dog = {
+    kind: "dog",
+    bark: () => console.log("bark"),
+  };
+  makeNoise(dog);
+}
+
+namespace Classes {
+  class Dog {
+    constructor(public name: string, public bark: () => void) {}
+  }
+  class Cat {
+    constructor(public name: string, public meow: () => void) {}
+  }
+  type Animal = Dog | Cat;
+  const makeNoise = (animal: Animal) => {
+    if (animal instanceof Dog) animal.bark();
+    else animal.meow();
+  };
+  const dog = new Dog("Fido", () => console.log("bark"));
+  makeNoise(dog);
+}