MATLAB Programming

Example — Assets and Asset Subclasses
See the subsasgn help entry for general information on assignment
statements in MATLAB.
The Stock display Method
When you issue the statement (without terminating with a semicolon)
XYZStock = stock('XYZ',100,25)
MATLAB looks for a method in the @stock directory called display. The
display method for the stock class produces this output.
Descriptor: XYZ
Date: 17-Nov-1998
Type: stock
Current Value: 2500.00
Number of shares: 100
Share price: 25.00
Here is the stock display method.
function display(s)
% DISPLAY(s) Display a stock object
display(s.asset)
stg = sprintf('Number of shares: %g\nShare price: %3.2f\n',...
s.numShares,s.sharePrice);
disp(stg)
First, the parent asset object is passed to the asset display method to
display its fields (MATLAB calls the asset display method because the input
argument is an asset object). The stock object’s fields are displayed in a
similar way using a formatted text string.
Note that if you did not implement a stock class display method, MATLAB
would call the asset display method. This would work, but would display
only the descriptor, date, type, and current value.
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