bool equals()

in lib/src/equality.dart [212:232]

• 21 lines of code
• 8 McCabe index (conditional complexity)

  bool equals(T? elements1, T? elements2) {
    if (identical(elements1, elements2)) return true;
    if (elements1 == null || elements2 == null) return false;
    var counts = HashMap(
        equals: _elementEquality.equals,
        hashCode: _elementEquality.hash,
        isValidKey: _elementEquality.isValidKey);
    var length = 0;
    for (var e in elements1) {
      var count = counts[e] ?? 0;
      counts[e] = count + 1;
      length++;
    }
    for (var e in elements2) {
      var count = counts[e];
      if (count == null || count == 0) return false;
      counts[e] = count - 1;
      length--;
    }
    return length == 0;
  }