#100DaysOfCode의 47일차: ES6 생성기 및 반복자 검토

소개

반복자 프로토콜

const list = [0, 1, 2, 3, 4, 5];
const arrayIterator = list[Symbol.iterator]();

console.log(arrayIterator.next());
console.log(arrayIterator.next());
console.log(arrayIterator.next());
/*
will print:
Object {value: 0, done: false}
Object {value: 1, done: false}
Object {value: 2, done: false}
*/

일시정지 가능한 기능

제너레이터 안팎으로 데이터 보내기

function* gen3() {
    for (let i = 0; i< 10; i++) {
        let value = yield i
        console.log(`sending data into generator: ${value}`)
    }
}


var g = gen3()
console.log(`sending data out of generator: ${g.next().value}`)
console.log(`sending data out of generator: ${g.next(10).value}`)
console.log(`sending data out of generator: ${g.next(20).value}`)
/*
will print:
sending data out of generator: 0
sending data into generator: 10
sending data out of generator: 1
sending data into generator: 20
sending data out of generator: 2
*/

조항

참조