toList 方法
- {bool growable = true}
元素按迭代顺序排列。如果 growable
为 false,则列表为固定长度。
示例
final planets = <int, String>{1: 'Mercury', 2: 'Venus', 3: 'Mars'};
final keysList = planets.keys.toList(growable: false); // [1, 2, 3]
final valuesList =
planets.values.toList(growable: false); // [Mercury, Venus, Mars]
实现
List<E> toList({bool growable = true}) {
int mask = _table.length - 1;
int length = (_tail - _head) & mask;
if (length == 0) return List<E>.empty(growable: growable);
var list = List<E>.filled(length, first, growable: growable);
for (int i = 0; i < length; i++) {
list[i] = _table[(_head + i) & mask] as E;
}
return list;
}