Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!cunixf.cc.columbia.edu!cunixb.cc.columbia.edu!wm1 From: wm1@cunixb.cc.columbia.edu (Wilfredo Marrero) Newsgroups: comp.lang.scheme Subject: Seeking help with continuations Message-ID: <1991Apr29.160533.11377@cunixf.cc.columbia.edu> Date: 29 Apr 91 16:05:33 GMT Sender: usenet@cunixf.cc.columbia.edu (The Network News) Reply-To: wm1@cunixb.cc.columbia.edu Organization: Columbia University Lines: 16 Originator: wm1@cunixb.cc.columbia.edu Nntp-Posting-Host: cunixb.cc.columbia.edu My class and I are struggling a bit with continuations. Ableson and Sussman do not discuss them in their textbook, while Springer and Friedman describe call/cc using escape procedures and contexts. While this does seem to produce a model that works, it is extremely confusing and can be used to explain only the simplest of examples. It is obvious that experts "out there" use continuations productively, so we are all fairly certain that there must be an easier way of explaining them. If anyone knows of a place to get a few simple but practical/usefull examples of the uses of call/cc or of another text which covers this topic, please let me know. Of course, any first hand explanations of call/cc would also be greatly appreciated. My address is: wm1@cunixb.cc.columbia.edu Will Marrero