How do you sort a list by bool in Dart

user_6524329 0
Viewed 7721

How do you sort a List in dart based on a bool value, the compareTo method doesn't work with bool. I want true values to appear at the top of the list.

dart flutter
2 Answers

You can define your own compare function for bool and pass it to the sort method of List.

Example with booleans as your bool List:

booleans.sort((a, b) {
  if(b) {
    return 1;
  }
  return -1;
});

This example tells the sort method that true elements should be sorted higher than false elements.

user_132501420

I just got the same issue, I solve it using the .toString() function. So it's sort separating the 0's to the 1's.

In this case I got a list of forms, some are synced and others no.

Here's my code:

final forms = state.forms
        ..sort(
          (a, b) => a.synced.toString().compareTo(b.synced.toString()),
        );

Hope it works for you.

user_190987210
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