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  • ๐Ÿ“บLecture
    • Nomad Coders
      • ์ดˆ๋ณด์ž๋ฅผ ์œ„ํ•œ ๋ฆฌ๋•์Šค 101
        • #0 Introduction
        • #1 PURE REDUX: COUNTER
        • #2 PURE REDUX: TO DO LIST
        • #3 REACT REDUX
        • #4 Redux Toolkit
      • ๋ฐ”๋‹๋ผ JS๋กœ ๊ทธ๋ฆผ ์•ฑ ๋งŒ๋“ค๊ธฐ
      • React JS ๋งˆ์Šคํ„ฐ ํด๋ž˜์Šค
        • #2 Styled Componnents
        • #3 TypeScript
        • #4 Crypto Tracker
        • #5 State Management
        • #6 Trello
        • #7 ANIMATIONS
      • Next.js ์‹œ์ž‘ํ•˜๊ธฐ
        • #0 INTRODUCTION
        • #1 FRAMEWORK OVERVIEW
        • #2 PRACTICE PROJECT
      • Typescript๋กœ ๋ธ”๋ก์ฒด์ธ ๋งŒ๋“ค๊ธฐ
        • #1 Introduction
        • #2 Overview of TypeScript
        • #3 Functions
        • #4 Classes and Interfaces
        • #5 TypeScript Blockchain
      • SQL Master Class
        • #1 Introduction
        • #2 SQLite
        • #3 Data Definition Language
        • #4 Data Manipulation Language
        • #5 Subqueries and CTEs
        • #6 Indexes
        • #7 MySQL
        • #8 Foreign Keys
        • #9 JOINS
        • #10 Nomalization
        • #11 Events & Triggers
        • #12 Full-Text Indexes
        • #13 PostgreSQL
        • #14 Functions And Procedures
        • #15 Transactions
        • #16 Data Control Language
        • #17 PostgreSQL JSON Columns
        • #18 PostgreSQL Extensions
        • #19 MongoDB
        • #20 REDIS
        • #21 Javascript and Python Drivers
    • Udemy
      • TypeScript ๋งˆ์Šคํ„ฐ with Webpack & React
        • [S1] ์†Œ๊ฐœ
        • [S2] ์„ค์น˜ ๋ฐ ์„ค์ •
        • [S3] ํƒ€์ž… ์• ๋„ˆํ…Œ์ด์…˜ ๊ธฐ์ดˆ
        • [S4] ํ•จ์ˆ˜
        • [S5] ๊ฐ์ฒด ํƒ€์ž…
        • [S6] ๋ฐฐ์—ด ํƒ€์ž…
        • [S7] ์œ ๋‹ˆ์˜จํƒ€์ž…
        • [S8] Tuple & Enum
        • [S9] ์ธํ„ฐํŽ˜์ด์Šค
        • [S10] TypeScript ์ปดํŒŒ์ผ๋Ÿฌ
        • [S11] ๋ฏธ๋‹ˆ ํ”„๋กœ์ ํŠธ DOM, ํƒ€์ž… ๋‹จ์–ธ, ๊ทธ๋ฆฌ๊ณ  ๋” ๋งŽ์€ ๋‚ด์šฉ
        • [S12] Class
        • [S13] TS Class
        • [S14] Generics โญโญโญโญโญ
        • [S15] Narrowing
        • [S16] Type Declarations
        • [S17] Module
        • [S18] Webpack ๊ณผ TypeScript
        • [S19] React
    • ๋ชจ๋‘๋ฅผ ์œ„ํ•œ ์ปดํ“จํ„ฐ ๊ณผํ•™ CS50
      • 1. ์ปดํ“จํŒ… ์‚ฌ๊ณ 
      • 2. C์–ธ์–ด
      • 3. ๋ฐฐ์—ด
      • 4. ์•Œ๊ณ ๋ฆฌ์ฆ˜
      • 5. ๋ฉ”๋ชจ๋ฆฌ
      • 6. ์ž๋ฃŒ๊ตฌ์กฐ
    • ์ƒํ™œ์ฝ”๋”ฉ
      • DATABASE
        • DATABASE1
  • ๐Ÿ“šBook
    • ๋ชจ๋˜ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ Deep Dive
      • 1์žฅ ํ”„๋กœ๊ทธ๋ž˜๋ฐ
      • 2์žฅ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ๋ž€?
      • 3์žฅ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๊ฐœ๋ฐœ ํ™˜๊ฒฝ๊ณผ ์‹คํ–‰ ๋ฐฉ๋ฒ•
      • 4์žฅ ๋ณ€์ˆ˜
      • 5์žฅ ํ‘œํ˜„์‹๊ณผ ๋ฌธ
      • 6์žฅ ๋ฐ์ดํ„ฐ ํƒ€์ž…
      • 7์žฅ ์—ฐ์‚ฐ์ž
      • 8์žฅ ์ œ์–ด๋ฌธ
      • 9์žฅ ํƒ€์ž… ๋ณ€ํ™˜๊ณผ ๋‹จ์ถ• ํ‰๊ฐ€ โญโญโญ
      • 10์žฅ ๊ฐ์ฒด ๋ฆฌํ„ฐ๋Ÿด
      • 11์žฅ ์›์‹œ ๊ฐ’๊ณผ ๊ฐ์ฒด์˜ ๋น„๊ต
      • 12์žฅ ํ•จ์ˆ˜ โญโญโญโญ
      • 13์žฅ ์Šค์ฝ”ํ”„
      • 14์žฅ ์ „์—ญ ๋ณ€์ˆ˜์˜ ๋ฌธ์ œ์ 
      • 15์žฅ let, const ํ‚ค์›Œ๋“œ์™€ ๋ธ”๋ก ๋ ˆ๋ฒจ ์Šค์ฝ”ํ”„ โญโญโญ
      • 16์žฅ ํ”„๋กœํผํ‹ฐ ์–ดํŠธ๋ฆฌ๋ทฐํŠธ
      • 17์žฅ ์ƒ์„ฑ์ž ํ•จ์ˆ˜์— ์˜ํ•œ ๊ฐ์ฒด ์ƒ์„ฑ
      • 18์žฅ ํ•จ์ˆ˜์™€ ์ผ๊ธ‰ ๊ฐ์ฒด โญโญ
      • 19์žฅ ํ”„๋กœํ† ํƒ€์ž… โญโญโญโญโญ
      • 20์žฅ strict mode
      • 21์žฅ ๋นŒํŠธ์ธ ๊ฐ์ฒด โญ
      • 22์žฅ this โญโญโญ
      • 23์žฅ ์‹คํ–‰ ์ปจํ…์ŠคํŠธ โญโญโญโญโญโญโญโญโญโญ
      • 24์žฅ ํด๋กœ์ € โญโญโญโญโญโญโญ
      • 25์žฅ ํด๋ž˜์Šค
      • 26์žฅ ES6 ํ•จ์ˆ˜์˜ ์ถ”๊ฐ€ ๊ธฐ๋Šฅ
      • 27์žฅ ๋ฐฐ์—ด โญโญโญ
      • 28์žฅ Number
      • 29์žฅ Math
      • 30์žฅ Date
      • 31์žฅ RegExp
      • 32์žฅ String
      • 33์žฅ 7๋ฒˆ์งธ ๋ฐ์ดํ„ฐ ํƒ€์ž… Symbol
      • 34์žฅ ์ดํ„ฐ๋Ÿฌ๋ธ”
      • 35์žฅ ์Šคํ”„๋ ˆ๋“œ ๋ฌธ๋ฒ•
      • 36์žฅ ๋””์ŠคํŠธ๋Ÿญ์ฒ˜๋ง ํ• ๋‹น
      • 37์žฅ Set๊ณผ Map
      • 38์žฅ ๋ธŒ๋ผ์šฐ์ €์˜ ๋ Œ๋”๋ง ๊ณผ์ •โญโญโญโญโญโญโญโญ
      • 39์žฅ DOM โญโญโญโญโญโญโญโญโญโญโญ
      • 40์žฅ ์ด๋ฒคํŠธโญโญโญโญโญโญโญโญโญโญโญ
      • 41์žฅ ํƒ€์ด๋จธ
      • 42์žฅ ๋น„๋™๊ธฐ ํ”„๋กœ๊ทธ๋ž˜๋ฐ โญโญโญโญโญโญโญโญ
      • 43์žฅ Ajax
      • 44์žฅ REST API
      • 45์žฅ ํ”„๋กœ๋ฏธ์Šค
      • 46์žฅ ์ œ๋„ˆ๋ ˆ์ดํ„ฐ์™€ async/await
      • 47์žฅ ์—๋Ÿฌ ์ฒ˜๋ฆฌ
      • 48์žฅ ๋ชจ๋“ˆ
      • 49์žฅ Babel๊ณผ Webpack์„ ์ด์šฉํ•œ ES6+/ES.NEXT ๊ฐœ๋ฐœ ํ™˜๊ฒฝ ๊ตฌ์ถ•
    • ๋Ÿฌ๋‹ ํƒ€์ž…์Šคํฌ๋ฆฝํŠธ
      • Ch.1 ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์—์„œ ํƒ€์ž…์Šคํฌ๋ฆฝํŠธ๋กœ
      • Ch.2 ํƒ€์ž… ์‹œ์Šคํ…œ
      • Ch.3 ์œ ๋‹ˆ์–ธ๊ณผ ๋ฆฌํ„ฐ๋Ÿด
      • Ch.4 ๊ฐ์ฒด
      • Ch.5 ํ•จ์ˆ˜
      • Ch.6 ๋ฐฐ์—ด
      • Ch.7 ์ธํ„ฐํŽ˜์ด์Šค
      • Ch.8 ํด๋ž˜์Šค
      • Ch.9 ํƒ€์ž… ์ œํ•œ์ž
      • Ch.10 ์ œ๋„ค๋ฆญ
      • Ch.11 ์„ ์–ธ ํŒŒ์ผ
      • Ch.12 IDE ๊ธฐ๋Šฅ ์‚ฌ์šฉ
      • Ch.13 ๊ตฌ์„ฑ ์˜ต์…˜
      • Ch.14 ๊ตฌ๋ฌธ ํ™•์žฅ
      • Ch.15 ํƒ€์ž… ์šด์˜
      • ์šฉ์–ด ์‚ฌ์ „
    • ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ์™„๋ฒฝ ๊ฐ€์ด๋“œ
    • SQL in 10 Minutes
      • 1์žฅ SQL ์ดํ•ดํ•˜๊ธฐ
      • 2์žฅ ๋ฐ์ดํ„ฐ ๊ฐ€์ ธ์˜ค๊ธฐ
      • 3์žฅ ๊ฐ€์ ธ์˜จ ๋ฐ์ดํ„ฐ ์ •๋ ฌํ•˜๊ธฐ
      • 4์žฅ ๋ฐ์ดํ„ฐ ํ•„ํ„ฐ๋ง
      • 5์žฅ ๊ณ ๊ธ‰ ๋ฐ์ดํ„ฐ ํ•„ํ„ฐ๋ง
      • 6์žฅ ์™€์ผ๋“œ์นด๋“œ ๋ฌธ์ž๋ฅผ ์ด์šฉํ•œ ํ•„ํ„ฐ๋ง
      • 7์žฅ ๊ณ„์‚ฐ ํ•„๋“œ ์ƒ์„ฑํ•˜๊ธฐ
      • 8์žฅ ๋ฐ์ดํ„ฐ ์กฐ์ž‘ ํ•จ์ˆ˜ ์‚ฌ์šฉํ•˜๊ธฐ
      • 9์žฅ ๋ฐ์ดํ„ฐ ์š”์•ฝ
      • 10์žฅ ๋ฐ์ดํ„ฐ ๊ทธ๋ฃนํ•‘
      • 11์žฅ ์„œ๋ธŒ์ฟผ๋ฆฌ ์‚ฌ์šฉํ•˜๊ธฐ
      • 12์žฅ ํ…Œ์ด๋ธ” ์กฐ์ธ
      • 13์žฅ ๊ณ ๊ธ‰ ํ…Œ์ด๋ธ” ์กฐ์ธ ์ƒ์„ฑํ•˜๊ธฐ
      • 14์žฅ ์ฟผ๋ฆฌ ๊ฒฐํ•ฉํ•˜๊ธฐ
      • 15์žฅ ๋ฐ์ดํ„ฐ ์‚ฝ์ž…ํ•˜๊ธฐ
      • 16์žฅ ๋ฐ์ดํ„ฐ ์—…๋ฐ์ดํŠธ์™€ ์‚ญ์ œ
      • 17์žฅ ํ…Œ์ด๋ธ” ์ƒ์„ฑ๊ณผ ์กฐ์ž‘
      • 18์žฅ ๋ทฐ ์‚ฌ์šฉํ•˜๊ธฐ
      • 19์žฅ ์ €์žฅ ํ”„๋กœ์‹œ์ € ์‚ฌ์šฉํ•˜๊ธฐ
      • 20์žฅ ํŠธ๋žœ์žญ์…˜ ์ฒ˜๋ฆฌ ๊ด€๋ฆฌํ•˜๊ธฐ
      • 21์žฅ ์ปค์„œ ์‚ฌ์šฉํ•˜๊ธฐ
      • 22์žฅ ๊ณ ๊ธ‰ ๋ฐ์ดํ„ฐ ์กฐ์ž‘ ์˜ต์…˜
    • ๋ฉด์ ‘์„ ์œ„ํ•œ CS ์ „๊ณต์ง€์‹ ๋…ธํŠธ
      • 4 ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค
        • 4.1 ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค์˜ ๊ธฐ๋ณธ
    • 2023 ์ด๊ธฐ์  SQL ๊ฐœ๋ฐœ์ž ์ด๋ก ์„œ + ๊ธฐ์ถœ๋ฌธ์ œ
      • ๋ฐ์ดํ„ฐ ๋ชจ๋ธ๋ง ์ดํ•ด
        • S1. ๋ฐ์ดํ„ฐ ๋ชจ๋ธ๋ง
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      • 6ํšŒ์ฐจ
      • 7ํšŒ์ฐจ
      • 8ํšŒ์ฐจ
      • 9ํšŒ์ฐจ
    • TypeScript Exercises
      • Ex 1
      • Ex 2
      • Ex 3
      • Ex 4
      • Ex 5
      • Ex 6
      • Ex 7
      • Ex 8
      • Ex 9
      • Ex 10
  • ๐Ÿ”„ETC
    • Article
      • Atomic Design Pattern
      • ํ”„๋ก ํŠธ์—”๋“œ ๊ฐœ๋ฐœ์ž
    • DATABASE
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        • CEIL() & FLOOR() - ์†Œ์ˆ˜์  ์˜ฌ๋ฆผ & ๋‚ด๋ฆผ
        • DUAL ํ…Œ์ด๋ธ” - ์ž„์‹œ ํ…Œ์ด๋ธ”๋กœ ๊ฒฐ๊ณผ ํ™•์ธํ•˜๊ธฐ
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  • #2.0 Vanilla ToDo
  • #2.1 State Mutation
  • #2.2 Delete To Do
  • #2.3 Delete To Do part Two
  • #2.4 Conclusions

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  1. Lecture
  2. Nomad Coders
  3. ์ดˆ๋ณด์ž๋ฅผ ์œ„ํ•œ ๋ฆฌ๋•์Šค 101

#2 PURE REDUX: TO DO LIST

#2.0 Vanilla ToDo

Vanilla JS > To Do ๋ฆฌ์ŠคํŠธ๋ฅผ ์ž‘์„ฑ, ํ•˜๋‚˜์”ฉ ์ถ”๊ฐ€ํ•˜๋Š” ๊ธฐ๋Šฅ

Reduxํ™”

state ์„ค์ •, ๊ฐ„๋‹จํ•œ reducer ์ž‘์„ฑ(์ž‘๋™X), dispatcher์— ์—ฐ๊ฒฐ๊นŒ์ง€ ํ™•์ธ

  • ์ฝ”๋“œ

    import { createStore } from "redux";
    
    const form = document.querySelector("form");
    const input = document.querySelector("input");
    const ul = document.querySelector("ul");
    
    const ADD_TODO = "ADD_TODO";
    const DELETE_TODO = "DELETE_TODO";
    
    const reducer = (state = [], action) => {
      switch (action.type) {
        case ADD_TODO:
          return [];
    
        case DELETE_TODO:
          return [];
    
        default:
          return state;
      }
    };
    
    const store = createStore(reducer);
    
    const onSubmit = (e) => {
      e.preventDefault();
      const toDo = input.value;
      input.value = "";
      store.dispatch({ type: ADD_TODO, text: toDo });
    };
    
    form.addEventListener("submit", onSubmit);

#2.1 State Mutation

ADD ๋ฒ„ํŠผ ํด๋ฆญ์‹œ state ๊ฐ’์„ ์ถ”๊ฐ€ํ•  ์ˆ˜ ์žˆ๊ฒŒ ์ˆ˜์ • > mutate๊ฐ€ ์•„๋‹Œ New state๋ฅผ ๋ฆฌํ„ดํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ

state๋Š” single source of truth ์ด๊ณ , read-only ์ด๊ธฐ์— ์ ˆ๋Œ€ mutateํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ ์ˆ˜์ •ํ•˜๋ฉด ์•ˆ๋œ๋‹ค. ์ƒˆ๋กœ์šด Object๋ฅผ ๋ฆฌํ„ดํ•ด์•ผํ•จ

  • ์ฝ”๋“œ

    import { createStore } from "redux";
    
    const form = document.querySelector("form");
    const input = document.querySelector("input");
    const ul = document.querySelector("ul");
    
    const ADD_TODO = "ADD_TODO";
    const DELETE_TODO = "DELETE_TODO";
    
    const reducer = (state = [], action) => {
      switch (action.type) {
        case ADD_TODO:
          return [...state, {text: action.text, id: Date.now()}]; //ES6 SPREAD
    
        case DELETE_TODO:
          return [];
    
        default:
          return state;
      }
    };
    
    const store = createStore(reducer);
    
    store.subscribe(() => console.log(store.getState()))
    
    const onSubmit = (e) => {
      e.preventDefault();
      const toDo = input.value;
      input.value = "";
      store.dispatch({ type: ADD_TODO, text: toDo });
    };
    
    form.addEventListener("submit", onSubmit);

#2.2 Delete To Do

ADD ๋ฒ„ํŠผ ํด๋ฆญ์‹œ ๋ฆฌ์ŠคํŠธ ์ถ”๊ฐ€ & DEL ๋ฒ„ํŠผ ์ถ”๊ฐ€๋œ ์ƒํƒœ

์•„์ง DEL ๊ตฌํ˜„์ด ์•ˆ๋˜์„œ ์ „์ฒด๊ฐ€ ์‚ญ์ œ๋จ

  • ์ฝ”๋“œ

    import { createStore } from "redux";
    
    const form = document.querySelector("form");
    const input = document.querySelector("input");
    const ul = document.querySelector("ul");
    
    const ADD_TODO = "ADD_TODO";
    const DELETE_TODO = "DELETE_TODO";
    
    const addToDo = (text) => {
      return {
        type: ADD_TODO,
        text,
      };
    };
    
    const deleteToDo = (id) => {
      return {
        type: DELETE_TODO,
        id,
      };
    };
    
    const reducer = (state = [], action) => {
      switch (action.type) {
        case ADD_TODO:
          return [{ text: action.text, id: Date.now() }, ...state]; //ES6 SPREAD
    
        case DELETE_TODO:
          return [];
    
        default:
          return state;
      }
    };
    
    const store = createStore(reducer);
    
    store.subscribe(() => console.log(store.getState()));
    
    const dispatchAddToDo = (text) => {
      store.dispatch(addToDo());
    };
    
    const dispatchDeleteToDo = (e) => {
      const id = e.target.parentNode.id;
      store.dispatch(deleteToDo(id));
    };
    
    const paintToDos = () => {
      const toDos = store.getState();
      ul.innerHTML = "";
      toDos.forEach((toDo) => {
        const li = document.createElement("li");
        const btn = document.createElement("button");
        btn.innerHTML = "DEL";
        btn.addEventListener("click", dispatchDeleteToDo);
        li.id = toDo.id;
        li.innerText = toDo.text;
        li.appendChild(btn);
        ul.appendChild(li);
      });
    };
    
    store.subscribe(paintToDos);
    
    const onSubmit = (e) => {
      e.preventDefault();
      const toDo = input.value;
      input.value = "";
      dispatchAddToDo(toDo);
    };
    
    form.addEventListener("submit", onSubmit);

#2.3 Delete To Do part Two

state๋ฅผ filter๋กœ ์ •๋ฆฌํ•ด Delete ๊ตฌํ˜„

Do NOT Mutate ! return NEW STATE !!

  • ์™„์„ฑ ์ฝ”๋“œ

    import { createStore } from "redux";
    
    const form = document.querySelector("form");
    const input = document.querySelector("input");
    const ul = document.querySelector("ul");
    
    const ADD_TODO = "ADD_TODO";
    const DELETE_TODO = "DELETE_TODO";
    
    const addToDo = (text) => {
      return {
        type: ADD_TODO,
        text,
      };
    };
    
    const deleteToDo = (id) => {
      return {
        type: DELETE_TODO,
        id,
      };
    };
    
    const reducer = (state = [], action) => {
      switch (action.type) {
        case ADD_TODO:
          return [{ text: action.text, id: Date.now() }, ...state]; //ES6 SPREAD
    
        case DELETE_TODO:   // mutate๊ฐ€ ๋˜๋ฉด ์•ˆ๋˜๊ธฐ์— slice๋Š” ์‚ฌ์šฉํ•˜์ง€ ๋ง์ž
          return state.filter((toDo) => toDo.id !== action.id);
    
        default:
          return state;
      }
    };
    
    const store = createStore(reducer);
    
    store.subscribe(() => console.log(store.getState()));
    
    const dispatchAddToDo = (text) => {
      store.dispatch(addToDo());
    };
    
    const dispatchDeleteToDo = (e) => {
      const id = parseInt(e.target.parentNode.id);
      store.dispatch(deleteToDo(id));
    };
    
    const paintToDos = () => {
      const toDos = store.getState();
      ul.innerHTML = "";
      toDos.forEach((toDo) => {
        const li = document.createElement("li");
        const btn = document.createElement("button");
        btn.innerHTML = "DEL";
        btn.addEventListener("click", dispatchDeleteToDo);
        li.id = toDo.id;
        li.innerText = toDo.text;
        li.appendChild(btn);
        ul.appendChild(li);
      });
    };
    
    store.subscribe(paintToDos);
    
    const onSubmit = (e) => {
      e.preventDefault();
      const toDo = input.value;
      input.value = "";
      dispatchAddToDo(toDo);
    };
    
    form.addEventListener("submit", onSubmit);

#2.4 Conclusions

  1. fuction์„ ์‚ฌ์šฉํ•ด redux ํ™˜๊ฒฝ์„ ๊ตฌ์„ฑํ•œ๋‹ค. action์„ dispatchํ•˜๋Š” fn reducer์— ๋ณด๋‚ผ object๋ฅผ returnํ•˜๋Š” fn +a

  2. Do Not Mutate !! Return New State !!! ์ฝ”๋“œ์Šคํ…Œ์ด์ธ ์—์„œ ํ•™์Šตํ•œ ๋‚ด์šฉ๊ณผ ๊ฐ€์žฅ ํฐ ์ฐจ์ด๋ฅผ ๋ณด์ด๋Š” ๊ตฌ๊ฐ„์ด๋‹ค. ๊ฐ•์˜ ๋‚ด๋‚ด ์ด ๋ถ€๋ถ„์„ ๊ฐ•์กฐํ•˜๋ฉฐ ๊ธฐ์กด์˜ ์ƒํƒœ๋ฅผ ๋ณ€๊ฒฝํ•˜๋Š” ๊ฒƒ์ด ์•„๋‹Œ ์ƒˆ๋กœ์šด ์ƒํƒœ๋ฅผ ์„ ์–ธํ•˜๋Š” ๊ฒƒ์ž„์„ ๊ฐ์ธ์‹œ์ผฐ๋‹ค.


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