// Dart语言字符串codeUnitAt()方法
void main() {
var res = "Good Day";
print("Code Unit of index 0 (G): ${res.codeUnitAt(0)}");
}
// Dart语言字符串codeUnitAt()方法
void main() {
var res = "Good Day";
print("Code Unit of index 0 (G): ${res.codeUnitAt(0)}");
}