Thanks so much for all the replies, that showed the way to what I
wanted (simplified example using substring):
(defn lazy-self [me]
((fn rfib [a] (lazy-cons a (rfib a))) me))
(defmacro map-obj [jobj jmeth argbinds & colls]
`(map (memfn ~jmeth [EMAIL PROTECTED]) (lazy-self ~jobj) [EMAIL PROTECTED]))
(map-obj "Timothy" substring (i j) (iterate inc 0) [3 5 4])
=> ("Tim" "imot" "mo")
ie: I was able to create a macro map-obj which will take a java object
and map a method to a given binding+input collection
Just a few follow on questions...
1) Is there any way to do away with the input bindings altogether? map
doesn't need input bindings, but memfn does. I don't quite grasp why
they are needed for memfn, or how to construct an input binding based
on the number of collections. ie: I would need to generate a list of
symbols the size of the number of collections (map gensym colls) ????
I know that code wont work, but there must be a way.
2) Is there a better way than my creation of a lazy-self function, or
is this pretty much the right thing to do?
3) Would I be better off making a macro that expands into a (doto
statement?
Regards,
Tim.
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