typeid and TypeInfo

Object

Classes that do not explicitly inherit any class, automatically inherit the Object class.

By that definition, the topmost class in any class hierarchy inherits Object:

// Inherits Object indirectly
class StringInstrument : MusicalInstrument {
    // ...
}

Since the topmost class inherits Object, every class indirectly inherits Object as well. In that sense, every class “is an” Object.

Every class inherits the following member functions of Object:

• toString: The string representation of the object.

• opEquals: Equality comparison with another object.

• opCmp: Sort order comparison with another object. ...