You'd probably enjoy reading about condition systems such as can be found in languages like Common Lisp and Dylan: http://xach.com/rpw3/articles/0dudnfoyYfsNu8

You'd probably enjoy reading about condition systems such as can be found in languages like Common Lisp and Dylan: http://xach.com/rpw3/articles/0dudnfoyYfsNu8vanZ2dnUVZ_sKqnZ2d@speakeasy.net.html http://xach.com/rpw3/articles/0dudnfoyYfsNu8vanZ2dnUVZ_sKqnZ... http://www.nhplace.com/kent/Papers/Condition-Handling-2001.html http://www.nhplace.com/kent/Papers/Condition-Handling-2001.h... http://people.csail.mit.edu/gregs/ll1-discuss-archive-html/msg02719.html http://people.csail.mit.edu/gregs/ll1-discuss-archive-html/m... An early version of the Dylan manual had a good chapter on this subject: http://jim.studt.net/dirm/interim-66.html http://jim.studt.net/dirm/interim-66.html And Dylan has some material available as well: http://opendylan.org/books/dpg/exceptions.html http://opendylan.org/books/dpg/exceptions.html http://opendylan.org/books/drm/Conditions_Background http://opendylan.org/books/drm/Conditions_Background http://opendylan.org/documentation/intro-dylan/conditions.html http://opendylan.org/documentation/intro-dylan/conditions.ht...