Programming and Data Types

The saveobj Method

MATLAB looks for the portfolio saveobj method whenever the save command is passed a portfolio object. If @portfolio/saveobj exists, MATLAB passes the portfolio object to saveobj, which must then return the modified object as an output argument. The following implementation of saveobj determines if the object has already been assigned an account number from a previous save operation. If not, saveobj calls getAccountNumber to obtain the number and assigns it to the account_number field.

• function b = saveobj(a)
  if isempty(a.account_number) 
      a.account_number = getAccountNumber(a);
  end
  b = a;
  

Example -- Defining saveobj and loadobj for Portfolio

The loadobj Method