MATLAB Object-Oriented Programming

Suppose that you want to use object A to index into object B. B can be a single object or

an array, depending on the class designs.

C = B(A);

Here are two examples of subsindex methods. The first assumes you can convert class A

to a uint8. The second assumes class A stores an index value in a property.

• The subsindex method implemented by class A can convert the object to numeric
  format to be used as an index:

function ind = subsindex(obj)

ind = uint8(obj);

end

The class of obj implements a uint8 method to provide the conversion from the

object to an integer value.

• Class A implements subsindex to return a numeric value that is stored in a property:

function ind = subsindex(obj)

ind = obj.ElementIndex;

end

Notesubsindex values are 0-based, not 1-based.

See Also

numArgumentsFromSubscript | subsasgn | subsref

Related Examples

• “end as Object Index” on page 17-35

More About

• “Modify nargout and nargin for Indexing Methods” on page 17-9

17 Specialize Object Behavior