However, seriously, clojure looks really interesting, being a cool language on the JVM and being purely functional. But does anybody know if it is possible in this language to make (easily) funny structures like circular lists, graphs, etc. ? AFAIK, that's the problem when you don't want to use set-car & set-cdr in Scheme (that's a problem in NewLisp too, for example) : you loose them. Did clojure manage to overcome this problem ?
If you want to display a string without the quotes, use "disp" instead of "write".
If you want to convert a string into an S-expr, use "read", and then if you want to evaluate that expression, use "eval".
(eval (read "(cons (cons 1 2) 3)"))
But I'm pretty sure you don't want to do either of those in this case. If what you want is nested lists, generate the nested lists - Lisp is good at that. Don't try to piece together your code out of parentheses. The following code will more-or-less generate the nested lists you asked about:
(def xw (n)
(let l '()
(for x 1 n
(= l (join 'w/link (list l))))
l))
However, the other problem with your approach is that even if you get xv working, it will pass a quoted expression to defop instead of an expression, and defop won't work right. To generate code, you need a macro, not a function. Here's a macro that will solve your original problem:
i think this makes map confusing when applying to multiple lists. where does the function argument go? at the end? after the first list? it just makes more sense if the lists are last.
Exactly. It's basically a roundabout way of adding keywords into the language. A better idea would be to just add them, and then list-functional notation could be used for something more generally useful.
