On Sun, 16 Dec 2012, mond wrote:
One small thing Ben... when I try to use the final formulation I receive an
error:
(def joined-products (map product-with-item products))
user=> (joined-products)
ClassCastException clojure.lang.LazySeq cannot be cast to clojure.lang.IFn
user/eval241 (NO_SOURCE_FILE:9)
Any ideas?
To evaluate a list, Clojure tries to call the first element as a
function, with the remaining elements as its arguments. So, in this
case:
(joined-products)
Clojure tries to cast the first element of the list (joined-products) to
be used as a Clojure function (clojure.lang.IFn), but it's a lazy
sequence (clojure.lang.LazySeq).
You just don't need the list:
user=> joined-products
(#user.Product{...} #user.Product{...} #user.Product{...} ...)
--
Best,
Ben
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