Default Object
A default object is the object returned by calling the class constructor with no arguments.
MATLAB uses default objects in these situations:
- Indexed assignment creates an array with gaps in array elements. For example, assign
the first element of array h to index 5 :
h(5) = ClassA(arg1,arg2);MATLAB fills the unassigned positions with default objects.- Loading a heterogeneous array from a MAT-file when the class definition of a specific
object in the array is not available. MATLAB replaces the object with the default
object.
Designing Heterogeneous Class Hierarchies