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In Matlab I have a class classdef myClass properties % some properties here... end methods ( Access = 'public' ) function obj = myClass() % constructor... end function obj = delete( obj ) % suppose to be destructor... fprintf(1, 'delete\n'); end end % public methods end What is the default behavior of Matlab when I clear a variable of type myClass ? For example: >> m = myClass(); >> clear m I would expect Matlab to call the destructor of m at this stage, but it seems like it doesn't!! My questions: How can I force a call to the destructor when clear ing a variable? Is this default behavior of Matlab's makes any sense? Isn't it more logical to call the destructor when clear ing a variable? Is it possible that Matlab's classes do not have a detructor method (that is, there is no default method to be called when the class is destroyed)? Or am I missing something? Is it possible that only classes derived from handle have a destructor (the delete method)? Thanks! EDIT : following Jonas' answer , a brief summary: Matlab has two types of classes: value classes (the default) and handle classes (derived from handle super class) . Value classes tends to provide better performance, however, they do not have a destructor functionality. handle classes do have a destructor function: <

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