handleError script download - handleError handleError - A general-purpose error-handling function with an ability to reg

handleError - A general-purpose error-handling function with an ability to register automatic cleanup actions handleError is a general-purpose error-handling function. The user can register cleanup actions that will automatically be activated in case of error. If an error occurred and handleError is called, then a hyper-linked stack-trace is displayed in the command window.Syntax:ERRMSG = handleErrorACTIONIDX = handleError('register',ACTION)ERRMSG = handleError('unregister',ACTIONIDX)ACTIONIDX = handleError('register',ACTION) will register cleanup actions to be performed in case of error. ACTION may be a single string (e.g., 'msgbox(lasterr)') or a cell array with arguments for the sprintf function (e.g., {'set(%.19g,''Pointer'',''arrow'')',gcf}). The returned ACTIONIDX is the sequential cleanup action index.ERRMSG = handleError('unregister',ACTIONIDX) will perform and unregister cleanup action(s) ACTIONIDX. The returned ERRMSG is the last error msg.ERRMSG = handleError; will automatically perform and unregister any registered cleanup actions. Then, the last error message will be displayed in the Command Window, followed by a hyper-linked stack trace of that error. This format is the one that should be used within catch blocks (see Example):Example:try. cleanups(1)=handleError('register',{'set(%.19g,''Pointer'',''arrow'')',gcf});. cleanups(2)=handleError('register','disp(''finished processing!'')');. set(gcf,'Pointer','watch'); drawnow;. ... some complex computation .... handleError('unregister',cleanups); %eval & unregister cleanup actionscatch. handleError; %display error stack; eval & unregister cleanup actionsendCompatibility:Created on Matlab 7, but should work on earlier versions too. Requirements: · MATLAB Release: R14SP3

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