小编Chi*_*ino的帖子

有一个 Day 类和一个 Day 对象列表，我需要将这些对象的地图转换为列表。

class Day{
    double open;
    double high;
    double low;
    double close;
    double volumeTo;

    Day({this.open, this.high, this.low, this.close, this.volumeTo});
}

List historical = [
    new Day(open: 42.6, high: 53.9, low: 39.5, close:56.00, volumeTo: 5000.0),
    new Day(open: 42.6, high: 53.9, low: 39.5, close:56.00, volumeTo: 5000.0),
    new Day(open: 42.6, high: 53.9, low: 39.5, close:56.00, volumeTo: 5000.0),
    new Day(open: 42.6, high: 53.9, low: 39.5, close:56.00, volumeTo: 5000.0),
];

最后我需要这样的例子：

List sampleData = [
    {"open":42.6, "high":53.9, "low":39.5, "close":56.00, "volumeto":5000.0},
    {"open":42.6, "high":53.9, …