Hi guys! Currently, I'm following the chapter: "Building ObjVlisp a Minimal, Uniform and Reflective Object-Oriented Language Kernel" (http://sdmeta.gforge.inria.fr/Teaching/ObjVLisp/). While doing this exercise I realized how cool it is :) Anywhays, I encountered a little problem which I solved, so it's more like a comment/feedback: In section 1.7 Message Passing and Dynamic Lookup, there are mentioned several methods, that are not actually implemented. Moreover, the readers task is to implement method #lookup: selector. But the skeleton(mcz package in the link above) does not contain this method. In the end of this section, it is said, that you have to run #testNilWhenErrorInLookup and #testRaisesErrorSendWhenErrorInLookup test methods. But, they does not exist too:) However, in test class there is a category called "tests-MessagePassingsAndDynamicsLookup" and it uses method #lookup: selector for: anObjObject. This method is empty, and when I implemented it, all tests from message passing category become green. Eventually my comment about this is: I'm guessing that either chapter or code(mcz file in the link I mentioned) is not up to date. Does anyone know if the rest of the chapter/code is not up to date? Or maybe I made a mistake and just couldn't find what I had to? P.S. I really recommend to follow this chapter/exercise :) Best, Mark -- View this message in context: http://forum.world.st/Building-ObjVlisp-language-chapter-tp4823907.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.