MATLAB Programming

9 Classes and Objects
For example, this statement creates a stock object to record the ownership of
100 shares of XYZ corporation stocks with a price per share of 25 dollars.
XYZStock = stock('XYZ',100,25);
The Stock get Method
The get method provides a way to access the data in the stock object using a
“property name” style interface, similar to Handle Graphics. While in this
example the property names are similar to the structure field name, they can
be quite different. You could also choose to exclude certain fields from access
via the get method or return the data from the same field for a variety of
property names, if such behavior suits your design.
function val = get(s,propName)
% GET Get stock property from the specified object
% and return the value. Property names are: NumberShares
% SharePrice, Descriptor, Date, CurrentValue
switch propName
case 'NumberShares'
val = s.numShares;
case 'SharePrice'
val = s.sharePrice;
case 'Descriptor'
val = get(s.asset,'Descriptor'); % call asset get method
case 'Date'
val = get(s.asset,'Date');
case 'CurrentValue'
val = get(s.asset,'CurrentValue');
otherwise
error([propName ,'Is not a valid stock property'])
end
Note that the asset object is accessed via the stock object’s asset field
(s.asset). MATLAB automatically creates this field when the class function
is called with the parent argument.
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