2019-08-07

flutter 对象新增属性

1.

Map data = {};

data = {"name":"xiaohua";};

data = {"age":1};

print(data);

----------------------{age:1}

2.

Map data = {};

data = {"name":"xiaohua";};

data["age"] = 1;

print(data);

--------------{name:"xiaohua",age:1}