How to Convert List<String> to List<Object> in flutter

Question

I have list of string that I want to convert into list of object.

List<Warehouse> getWarehouseSuggestions(String query) {
    final warehouseList = warehouses.entries.toList();
    final locIds = warehouseList.map((e) => e.value.name);
    List<String> a = List.of(locIds).where((warehouse) {
      final warehouseLower = warehouse.toLowerCase();
      final queryLower = query.toLowerCase();

      return warehouseLower.contains(queryLower);
    }).toList();

    List<Warehouse> b = List<Warehouse>.filled(a.length, a);
    return b;
  }

List<Warehouse> b = a.map((string) => Warehouse(somethingRelatedToString)).toList(); — CopsOnRoad
– CopsOnRoad, Commented Jul 3, 2021 at 9:58
Glad to know that, I've added a general answer to this for future visitors. — CopsOnRoad
– CopsOnRoad, Commented Jul 3, 2021 at 11:48

CopsOnRoad · Accepted Answer · 2022-03-07 12:00:06Z

1

You should use map on your List<String>, something like this:

List<Foo> foos = listOfString.map((s) => Foo(s)).toList();
// or
List<Foo> foos = listOfString.map(Foo).toList();

edited Mar 7, 2022 at 12:00

answered Jul 3, 2021 at 11:48

CopsOnRoad

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2 Comments

John Joe Over a year ago

I think is FooObject instead of Foo?

CopsOnRoad Over a year ago

@JohnJoe Thanks for pointing it out. It's fixed now!

hrithik_dass · Accepted Answer · 2022-11-06 23:46:03Z

0

conversion from JSON(Map<String, dynamic>) to Map<DateTime, List<Object>>

date_StatDataMap: (map['date_StatDataMap'] as Map<String, dynamic>).map((key, value) => MapEntry(DateTime.parse(key), value.map((StatsData) {return StatsDataModel.fromMap(StatsData);}).toList())).cast<DateTime, List>(),

answered Nov 6, 2022 at 23:46

hrithik_dass

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1 Comment

Community Over a year ago

As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.

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