type '(dynamic) => dynamic' is not a subtype of type '(dynamic) => bool' of 'test' when I use map function
I solved with this code:
function filter(_items) { return _items.map((day, items) { return new MapEntry(day, items.where((i) { return i.stringProperty.contains(widget.filter) ? true : false; }).toList()); });}It seems the contains function does not return a bool value.
I believe this will also work, still not sure why it doesn't return a bool though
function filter(_items) { return _items.map((day, items) { return new MapEntry(day, items.where((i) { return (i.stringProperty.contains(widget.filter)) as bool; }).toList()); });}
Where method returns a list, so you don't need to use toList(), and you should specify the return type of map method when you are using it.
filter(_items) { return _items.map<String, List<bool>>((day, items) { return MapEntry( day, items.where((i) => i.stringProperty.contains(widget.filter)), ); }); }