Can null be considered a value representing the absence of an object?

In programming, null is usually used to denote the absence of a value or a reference to an object. However, null is not the value of the object itself, but a pointer indicating that the object is absent.

For example, if you have a variable that should refer to an object but is not yet initialized, it can have the value null. This means that the object does not exist or has not been assigned.

It is important to distinguish null from other values: null is the absence of a reference, not the value of an object. In some languages (for example, Dart in Flutter), a null safety system has been introduced in recent versions, which helps to work safely with null.