Question

How to check if two lists are equal in Dart

Answer 1

bool ListsEqual(var list1, var list2) {
    if (!(list1 is List && list2 is List)
        || list1.length != list2.length) {
        return false;
    }
     
    for (int i = 0; i < list1.length; i++) {
        if (list1[i] != list2[i]) {
            return false;
        }
    }
     
    return true;
}
 
void main() {
    List list1 = [2, 0, 4, 8, 1, 6];
    List list2 = [2, 0, 4, 8, 1, 6];

    if (ListsEqual(list1, list2)) {
        print('yes');
    } else {
        print('no');
    }
}
 
 
 
 
 
/*
run:
 
yes
 
*/

 

70+ SQL courses for beginners and professionals

Answer 2

import 'package:collection/collection.dart';

void main() {
    List list1 = [2, 0, 4, 8, 1, 6];
    List list2 = [2, 0, 4, 8, 1, 6];

    Function equality = const ListEquality().equals;
  
    print(equality(list1, list2)); 
}
 
 
 
 
 
/*
run:
 
true
 
*/

 

70+ SQL courses for beginners and professionals

Answer 3

import 'package:collection/collection.dart';

void main() {
    List list1 = [1, 8, 0, 6, 2, 4];
    List list2 = [2, 0, 4, 8, 1, 6];
 
    Function unordered_deep_equality = const DeepCollectionEquality.unordered().equals;
  
    print(unordered_deep_equality(list1, list2)); 
}
 
 
 
 
 
/*
run:
 
true
 
*/

 

70+ SQL courses for beginners and professionals