MATLAB Programming

Example — Assets and Asset Subclasses
indices 1 to fieldcount. See “The Asset fieldcount Method” on page 9-49 and
“The Asset subsref Method” on page 9-46 for a description of these methods.
Numeric indices greater than the number returned by fieldcount are
handled by the inner switch statement, which maps the index value to the
appropriate field in the stock structure.
Field name indexing assumes field names other than numShares and
sharePrice are asset fields, which eliminates the need for knowledge of asset
fields by child methods. The asset subsref method performs field-name error
checking.
See the subsref help entry for general information on implementing this
method.
The Stock subsasgn Method
The subsasgn method enables you to change the data contained in a stock
object using numeric indexing and structure field name indexing. MATLAB
calls subsasgn whenever you execute an assignment statement (e.g., A(i) =
val, A{i} = val, orA.fieldname = val).
function s = subsasgn(s,index,val)
% SUBSASGN Define index assignment for stock objects
fc = fieldcount(s.asset);
switch index.type
case '()'
if (index.subs{:}