oodavid

/// 0 - Example `Streams`
Stream<MyUserModel> userStream => FirebaseAuth
  .instance
  .onAuthStateChanged
  .map((user) => MyUserModel.fromFirebase(user));

String documentPath = 'my/document';
Stream<MyDocumentModel> documentStream = Firestore.instance
    .document(documentPath)
    .snapshots()

oodavid

extension SortBy on List {
  sortBy(List<String> keys) {
    this.sort((a, b) {
      for(int k=0; k<keys.length; k++) {
        String key = keys[k];
        int comparison = Comparable.compare((a[key]??""), (b[key]??""));
        if(comparison != 0){
          return comparison;
        }
      }