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배열 평탄화하기 : Array.prototype.flatMap()과 Map.prototype.entries()
Array.prototype.flatMap() Map.prototype.entries() 기존의 일반 객체는 Object.entries()를 사용했다면. map객체는 내장메서드인 entries()를 사용하면 된다. Reference https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap
2022년 4월 5일
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