Merge branch 'main' into lecture/6

Author: 4BFC

src/utils/data.interface.ts

@@ -8,7 +8,6 @@ export interface userType {
   [grade: number]: Score;
 }
 
-//함수 interface 선언 방식
 export interface Add {
   (num1: number, num2: number): number;
 }
@@ -17,8 +16,6 @@ export interface isAdult {
   (age: number): boolean;
 }
 
-// implements
-
 export interface Car {
   color: string;
   wheels: number;
@@ -37,4 +34,44 @@ interface Toy {
 // 동시 확장 방식
 interface ToyCar extends Car, Toy {
   price: number;
+}
+
+type Job = "police" | "developer" | "teacher";
+
+export interface UserName {
+  name: string;
+  job: Job;
+}
+
+// '|' 이게 유니온 타입
+export interface HighSchoolStudent {
+  name: number | string;
+  grade: 1 | 2 | 3;
+}
+
+// union types
+
+export interface UnionCar {
+  name: 'car';
+  color: string;
+  start(): void;
+}
+
+export interface UnionMobile {
+  name: 'mobile';
+  color: string;
+  call(): void;
+}
+
+//intersection types
+
+export interface InterCar {
+  name: string;
+  start(): void;
+}
+
+export interface InterToy {
+  name: string;
+  color: string;
+  price: number;
 }