Hi All,
I'm fairly new to Clojure (enjoying it very much!) and had a couple
questions regarding lazy sequences.
1. With a sequence of sequences, I want to reduce the sequences down into a
single sequence. So, the heads of all the sequences gets reduced, then the
next items, etc. The end result would also be a lazy sequence. Right now
I have this code that is working, but I wasn't sure if there's some other
way that might be clearer:
(defn amix
([] [])
([& a]
(let [len (count a)]
(if (= len 1)
(first a)
(map #(reduce + %) (partition len (apply interleave a)))))))
2. I'm planning to have a number of sequence transforming functions. Most
will probably have this shape:
(defn some-func [arg1 arg2 xs]
(map #(some code...) xs))
This would be so I could consume a lazy sequence xs, operate on it, then
output a lazy sequence. I thought I might write a macro to simplify this
and have the function do its own lazy-seq and recursive call to itself,
rather than go through map (figured it might save some call overhead, and
simplify the macro writing, but am still a bit new with this). I imagine
this should work fine, but is this kind of thing already encapsulated
somewhere?
Thanks!
steven
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