Petr Fischer via Pharo-users <pharo-users@lists.pharo.org> wrote: Hello! Weird question: why I can't add instance variables to the Object class (for example "oid" or something else)? Is it due to some internal (and different) VM "class layouts"?
Or - can I inject my own information to all existing objects (any class)? You might want to take a look at the documentation of Magma. http://wiki.squeak.org/squeak/2665 Stephan
