On Aug 12, 10:25 pm, daly <d...@axiom-developer.org> wrote: > Consing up a new function and using eval is certainly possible but > then you are essentially just working with an interpreter on the data.
This is the same in CL. When you have a GP system that constructs new program trees then inside your fitness function you will eval it. Clojure does not come with an interpreter, so eval results in a compiled program that gets executed. You can of course use recombination and mutation of programs and/or subprograms and thus create a new generation that is now modified, which then gets its fitness measured. > How does function invocation actually work in Clojure? Lisp-1. This is much better suited for a (predominantly) functional programming style. Also see this paper by Kent Pitman: http://www.nhplace.com/kent/Papers/Technical-Issues.html (“Probably a programmer who frequently passes functions as arguments or who uses passed arguments functionally finds Lisp1 syntax easier to read than Lisp2 syntax;”) > In Common Lisp you fetch the function slot of the symbol and execute it. > To modify a function you can (compile (modify-the-source fn)). > This will change the function slot of the symbol so it will execute the > new version of itself next time. > > Does anyone know the equivalent in Clojure? Would you have to invoke > javac on a file and reload it? The Clojure compile function only seems > to know about files, not in-memory objects. In Clojure it is: (eval (modify-the-source fn)). -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
