CODEWITHSUNDEEP
classdartsyntax
w461
w461

Reputation: 2678

how to access a class's object by its name which is stored in a String?

I would like to select an object in a class by its name stored in a variable. Is this feasible? So basically a syntax for the placeholder -magic_syntax- or any other method how this can be achieved.

const String kListNames = {'list1', 'list2'};

class MyClass {
  List<int> list1 = [0, 1, 2];
  List<bool> list2 = [true, false];
}

main() {
  List<dynamic> myList;
  MyClass myClass;
  for (var listName in kListNames) {
    myList = myClass.-magic_syntax-(listName);
  }
}

Upvotes: 0

Views: 247

Answers (1)

cas
cas

Reputation: 807

Dart is a Compile time language. It's not possible to interact with variables through their variable names in the way you're suggesting.

why not store your data in a Map?

Map<String, List> myData = {
    'list1':  [0, 1, 2],
    'list2': [true, false],
}:

for(final listName in myData.keys) {
 ...
}

now you can loop over the data keys myData.keys, the values myData.values or both myData.entries

Upvotes: 1

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