[TIL] 클린 코딩 팁 3가지

 

1. DRY(Don't Repeat Yourself) <-> WET(Write Everything Twice)

// bad
function greetings(user) {
	return `Hi ${user.firstName} ${user.lastName}`;
}

function goodbye(user) {
	return `See you next time ${user.firstName} ${user.lastName}`;
}

// good
class User {
	fullName() {
		return `${this.firstName} ${user.middleName} ${this.LastName}`;
	}
}

 

2. KISS(Keep It Simple, Stupid)

// bad
function getFirst(array, isOdd){
	return array.find(x => (isOdd ? x%2 !== 0 : x%2 === 0));
}

// good
function getFirstOdd(array){
	return array.find(x=> x%2 !== 0
}

function getFirstEven(array){
	return array.find(x=> x%2 === 0
}

 

3. YAGNI(You Ain’t Gonna Need It)

// bad
function deleteUser(id, softDelete = false){
if(softDelete){
		return this._softDelete(id);
	}
return db.removeById(id);
}

 

참고
드림코딩(링크)