MATLAB Programming Fundamentals - MathWorks

Reset Algorithm and Release Resources

In this section...

“Reset Algorithm State” on page 34-30

“Release System Object Resources” on page 34-30

Reset Algorithm State

When a user calls reset on a System object, the internal resetImpl method is called. In

this example, pCount is an internal counter property of the Counter System object.

When a user calls reset, pCount resets to 0.

classdef Counter < matlab.System

% Counter System object that increments a counter

properties (Access = private)

pCount

end

methods (Access = protected)

% Increment the counter and return

% its value as an output

function c = stepImpl(obj)

obj.pCount = obj.pCount + 1;

c = obj.pCount;

end

% Reset the counter to zero.

function resetImpl(obj)

obj.pCount = 0;

end

end

end

Release System Object Resources

When a user calls release on a System object, the internal releaseImpl method is

called. This example shows how to implement the method that releases resources

allocated and used by the System object. These resources include allocated memory and

files used for reading or writing.

34 System object Usage and Authoring