How can I update a class file without using "clear all"?

After modifying a class .m file, even if I clear the old arrays of objects corresponding to this class, the newly created objects will still follow the old class file. Currently, I have to use "clear all" to make a thorough update. But is there any specific approach to achieve this "class update" goal? Thanks!

[Matt J]

Pretty strange. I can't reproduce that behavior. I think clearing the old objects should be enough. Are you sure you don't have inadvertent copies of the class lying around? Try doing

 >>which -all myclass

[Matt J]

Also try doing "clear classes". Then see if clearing the old objects is sufficient from that point forward for updating purposes.