flutter dart datetime in list<map> occur error-CodePudding

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flutter dart datetime in list<map> occur error

Time：07-20

my code is below. I want it to be type-recognized as a datetime type at compile time.

var myList = [{
   'message': 'foo',
   'time': DateTime.now()
}];
DateTime.now().difference(myList[0]['time']);

and it has error of The argument type 'Object?' can't be assigned to the parameter type 'DateTime'.

how can i fix this?

CodePudding user response：

You need to add a type cast for this with the as keyword:

DateTime.now().difference(myList[0]['time'] as DateTime)