listsEqual function
Implementation
bool listsEqual(List? a, List? b) {
if (a == b) return true;
if (a == null || b == null) return false;
if (a.length != b.length) return false;
for (var i = 0; i < a.length; i++) {
if (a[i] != b[i]) return false;
}
return true;
}