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d105911
🌱: README을 수정
4BFC Aug 26, 2024
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🌱: README을 수정
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5e69dee
🌱: README을 수정
4BFC Aug 29, 2024
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🌱: README을 수정
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978d932
🌱: README을 수정
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859bffc
🌱: README을 수정
4BFC Aug 29, 2024
e09d95d
🌱: README을 수정
4BFC Aug 29, 2024
3255009
🌱: README을 수정
4BFC Aug 29, 2024
ab9b8db
🌱: README을 수정
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5f0f9f9
🌱: README을 수정
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daaeeed
🌱: README을 수정
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c8ec455
🌱: README을 수정
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🌱: README을 수정
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🌱: README을 수정
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bce5c89
🌱: README을 수정
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ed8fa00
🌱: issue templates 생성
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🌱: pr-template 생성
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🌱: pr-template 수정
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🌱: pr-template 수정
4BFC Aug 30, 2024
3c3280b
🚩: udemy section2의 14번 강의를 듣고 실습을 했다.
4BFC Aug 31, 2024
cbf04eb
🔀: Merge branch 'UdemyTs'
4BFC Aug 31, 2024
0f07929
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Aug 31, 2024
757fb99
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Aug 31, 2024
7e8ac7d
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Aug 31, 2024
aa89074
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Sep 1, 2024
79304fe
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Sep 1, 2024
eb21a7f
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Sep 1, 2024
cf56f00
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Sep 1, 2024
7dec10d
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Sep 1, 2024
28200e9
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Sep 1, 2024
621e700
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
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Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
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06d966b
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Sep 20, 2024
571488d
Merge branch 'UdemyTs' of https://github.com/Programming-Contents-Lis…
4BFC Oct 1, 2024
467db59
🚩 내장 클래스(제네릭)과 일반 제네릭의 사용 차이
4BFC Oct 1, 2024
74d3e80
🚩: 제네릭 클래스 셜명 주석으로 추가
4BFC Oct 1, 2024
1184460
🐛: 제네릭을 사용하지 않고 객체 타입을 생성하는 방법
4BFC Oct 1, 2024
5f01c18
🐛: 제네릭을 사용하지 않은 방식 추가 설명 주석처리
4BFC Oct 1, 2024
2115458
🚩: ts 엄격 모드 규칙 환경에서의 제네릭 사용 방법과 제네릭의 타입 추론 개념 설명 및 실습
4BFC Oct 1, 2024
c42fca8
🚩: 현재 우리가 설정한 제네릭의 오점을 확인
4BFC Oct 1, 2024
29ea62a
🐛: 우리가 의도한 제네릭의 설정으로 인해 발생한 오류 확인
4BFC Oct 1, 2024
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39 changes: 9 additions & 30 deletions dist/app.js
Original file line number Diff line number Diff line change
@@ -1,31 +1,10 @@
"use strict";
var Department = /** @class */ (function () {
// readonly는 프로퍼티를 초기화한 후 수정할 수 없다. 즉, 한번 할당 되면 변경되면 안되는 고유 번호들을 설정할 때 readonly를 사용한다.
function Department(id, name) {
this.id = id;
this.name = name;
// private id: string;
// private name: string;
this.employees = [];
// this.id = id;
// this.name = n
}
Department.prototype.describe = function () {
console.log("Department (".concat(this.id, "): ").concat(this.name));
};
Department.prototype.addEmployee = function (employee) {
// this.id = '2'; // readonly이기 때문에 error가 발생한다.
this.employees.push(employee);
};
Department.prototype.printEmployeeInformation = function () {
console.log(this.employees.length);
console.log(this.employees);
};
return Department;
}());
var accounting = new Department('1', 'Accounting');
accounting.addEmployee('Max');
accounting.addEmployee('Manu');
// accounting.employees[2] = 'Anna';
accounting.describe();
accounting.printEmployeeInformation();
function merge(objA, objB) {
return Object.assign({}, objA, objB);
}
// 1. 여기서 두번째 인자에 일반 `30`을 넣으면 객체로 접근을 할 수 없을 뿐 아무런 에러가 발생하지 않는다. 우리가 의도한건 object임을 준수 해야하는 것이다.
// 2. 이를 해결하기 위해서는 제네릭의 선언 방식을 변경해야 한다.
const mergeObj = merge({ name: 'Max', hobbies: ['Sports'] }, 30); // 1. error가 발생하지 않는다. 2. extends를 사용함으로 error 발생 확인
// const mergeObj = merge({ name: 'Max', hobbies: ['Sports'] }, { age: 30 });
const mergeObj2 = merge({ name: 'Max' }, { age: 30 });
console.log(mergeObj.name);
14 changes: 14 additions & 0 deletions index.html
Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>

<body>
<script src="./dist/app.js"></script>
</body>

</html>
86 changes: 8 additions & 78 deletions src/app.ts
Original file line number Diff line number Diff line change
@@ -1,83 +1,13 @@
class Department {
// private id: string;
// private name: string;
private employees: string[] = [];
// readonly는 프로퍼티를 초기화한 후 수정할 수 없다. 즉, 한번 할당 되면 변경되면 안되는 고유 번호들을 설정할 때 readonly를 사용한다.
constructor(private readonly id: string, public name: string) {
// this.id = id;
// this.name = n
}
describe(this: Department) {
console.log(`Department (${this.id}): ${this.name}`);
}

addEmployee(employee: string) {
// this.id = '2'; // readonly이기 때문에 error가 발생한다.
this.employees.push(employee);
}

printEmployeeInformation() {
console.log(this.employees.length);
console.log(this.employees);
}
}

class ITDepartment extends Department {
admins: string[];
constructor(id: string, admins: string[]) {
super(id, 'IT');
this.admins = admins;
}
function merge<T extends object, U extends object>(objA: T, objB: U): T & U {
return Object.assign({}, objA, objB);
}

class AccountingDepartment extends Department {
private lastReport: string;

get mostRecentReport() {
if (this.lastReport) {
return this.lastReport;
}
throw new Error('No report found.');
}

set setMostRecentReport(value: string) {
if (!value) {
throw new Error('Please pass in a valid value!')
}
this.addReport(value);
this.lastReport = value; // 여기서 lastReport를 업데이트 그래야 lastReport가 비어있지 않기 때문에 정상적으로 동작을 한다.
}

constructor(id: string, private reports: string[]) {
super(id, 'Account');
//strictPropertyInitialization 활성화로 초기화 해줘야 함.
this.lastReport = reports[0] || ""; // 초기값을 할당 (reports가 비어있으면 빈 문자열)
}

addReport(text: string) {
this.reports.push(text);
}

printReports() {
console.log(this.reports);
}
}
const accounting = new Department('1', 'Accounting');
const ITaccounting = new ITDepartment('2', ['Max']);

ITaccounting.addEmployee('Max');
ITaccounting.addEmployee('Manu');

// accounting.employees[2] = 'Anna';
ITaccounting.describe();
ITaccounting.printEmployeeInformation();

const NewAccounting = new AccountingDepartment('d2', []);
// 1. 여기서 두번째 인자에 일반 `30`을 넣으면 객체로 접근을 할 수 없을 뿐 아무런 에러가 발생하지 않는다. 우리가 의도한건 object임을 준수 해야하는 것이다.
// 2. 이를 해결하기 위해서는 제네릭의 선언 방식을 변경해야 한다.
const mergeObj = merge({ name: 'Max', hobbies: ['Sports'] }, 30); // 1. error가 발생하지 않는다. 2. extends를 사용함으로 error 발생 확인
// const mergeObj = merge({ name: 'Max', hobbies: ['Sports'] }, { age: 30 });

// console.log(NewAccounting.mostRecentReport); //report가 추가되지 않아서 Error
NewAccounting.setMostRecentReport = 'Year End Report';
NewAccounting.addReport('Something went wrong...');

console.log(NewAccounting.mostRecentReport); //report가 있어서 문제없이 출력
const mergeObj2 = merge({ name: 'Max' }, { age: 30 });

NewAccounting.printReports();
console.log(mergeObj.name);