MATLAB: How to perform CLEAR CLASSES without removing breakpoints

MATLAB

I am working with classes that have breakpoints set inside them. Often, I need to run the CLEAR CLASSES command. This command has the unwanted side effect of clearing the breakpoints as well.

Best Answer

The ability to clear classes without clearing breakpoints is not available in MATLAB 7.8 (R2009a). As a workaround, you can create a custom function that saves the breakpoints, clears classes, and then restores the breakpoints.

function clear_classes()
current_breakpoints = dbstatus('-completenames');
evalin('base', 'clear classes');
% get around bug where red icons are not displayed
% by pausing for a short time
pause(0.1)
dbstop(current_breakpoints );
end

Related Solutions

MATLAB: How to clear persistent variables without clearing breakpoints

The ability to clear persistent variables without clearing breakpoints does not exist in MATLAB. All the means to clear persistent data also clear the breakpoints.

As a workaround, you can clear all functions and then add the breakpoints back again by executing the following function:

function testBreakPoints
a = dbstatus;
clear functions
dbstop(a);
end

For this workaround to work, it is required that all files that contain breakpoints are on the MATLAB Search Path.

MATLAB: How to execute “clear all” without affecting the breakpoints in MATLAB 8.1 (R2013a)

MATLAB 8.1 (R2013a) currently does not have the ability to retain breakpoints while clearing all the variables in the workspace after issuing "clear all."

As a workaround, the following example function, clearNoBP, clears all the workspace data without removing the break points.

The functions DBSTATUS and DBSTOP are used to get this functionality.

function clearNoBP(varargin)
      % returns all breakpoints into 's'
      s = dbstatus;
      % records all input arguements (varargin) into 'options'
      options = '';
      for i = 1:numel(varargin)
          options = [options,',''',varargin{i},''''];
      end
      % Execute built-in clear function with input options in specified caller workspace
      evalin('caller',['builtin(''clear''',options,')']);
      % resets the breakpoints
      dbstop(s);
end

The above function records all the current breakpoints, evaluates the built-in CLEAR function only in the caller’s workspace and re-sets all the breakpoints.

In order to use clear allowing the breakpoints to remain, execute the following command in the command window,

clearNoBP all

Also, refer to the following documentation link to see all the available input options with the CLEAR function.

http://www.mathworks.com/help/matlab/ref/clear.html

Best Answer

Related Solutions

MATLAB: How to clear persistent variables without clearing breakpoints

MATLAB: How to execute “clear all” without affecting the breakpoints in MATLAB 8.1 (R2013a)

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