operator == method

  1. @override
bool operator ==(
  1. Object other
)

The equality operator.

The default behavior for all Objects is to return true if and only if this object and other are the same object.

Override this method to specify a different equality relation on a class. The overriding method must still be an equivalence relation. That is, it must be:

  • Total: It must return a boolean for all arguments. It should never throw.

  • Reflexive: For all objects o, o == o must be true.

  • Symmetric: For all objects o1 and o2, o1 == o2 and o2 == o1 must either both be true, or both be false.

  • Transitive: For all objects o1, o2, and o3, if o1 == o2 and o2 == o3 are true, then o1 == o3 must be true.

The method should also be consistent over time, so whether two objects are equal should only change if at least one of the objects was modified.

If a subclass overrides the equality operator, it should override the hashCode method as well to maintain consistency.

Implementation

@override
bool operator ==(other) {
  if (identical(other, this)) return true;
  if (!(super == (other))) return false;

  final eq = const ListEquality().equals;
  return other is BaseMessage &&
      other.messageId == messageId &&
      other.message == message &&
      other.sendingStatus == sendingStatus &&
      other._sender == _sender &&
      other.isSilent == isSilent &&
      other.threadInfo == threadInfo &&
      eq(other.reactions, reactions);
}