Dart的List比较特殊的几个API dart list排序

void main() {

  List myList = ["香蕉","苹果","西瓜"];

  myList.forEach((i) {
    print("$i");
  });
  
}

void main() {

  List oldList = [1,2,3];

  List newList = oldList.map((i) {
    return i * 2;
  }).toList();

  print(newList);

}

// 输出结果：[2, 4, 6]

void main() {

  List oldList = [1,2,3,4,5,6,7,8,9];

  List newList = oldList.where((i) {
    return i > 5;
  }).toList();

  print(newList);

}

// 输出结果:[6, 7, 8, 9]

void main() {

  List oldList = [1,2,3,4,5,6,7,8,9];

  bool result = oldList.any((i) {  // 只要集合里面有满足条件的就返回true
    return i > 5;
  });

  print(result);

}

// 输出结果：true

void main() {

  List oldList = [1,2,3,4,5,6,7,8,9];

  bool result = oldList.every((i) {  // 集合里面每一个都满足条件时就返回true
    return i > 5;
  });

  print(result);

}

// 输出结果：false