api.dart.dev/stable/2.10.5/dart-core/String-class.html String class - dart:core library - Dart API A sequence of UTF-16 code units. Strings are mainly used to represent text. A character may be represented by multiple code points, each code point consisting of one or two code units. For example the Papua New Guinea flag character requires four code unit api.dart.dev 함수 테스트 코드 void main() { List ..