What I'm not clear on is how the method table is implemented (in clojure's standard multimethods) in terms of namespaces and loading/unloading. Is the method table located in the same namespace where the defmulti is located? i.e. when a defmethod is encountered (e.g. in a different namespace), what happens? It's possible to use defmulti and defmethods all in the same namespace, but that seemed to defeat part of the purpose of the potential modularity being gained, at least, comparing to how generics are used in SICP. Haven't seen much explanation of this (mainly about clojure's implementation of multimethods, i.e. the starting point for this talk). Nice talk though. Feel it's important to get exactly how clojure does it clear first, before going more complex.
"With no further ado, I'd like to introduce the first one of those mind-blowing features....Before we do that, though..." ;-) But seriously, this is very cool. Am I right in thinking that what he is calling "partial default dispatch" is really a form of multiple dispatch?
