1. I have a function that returns a set of unique words, get-
wordlist()
2. (I think) this function returns a set, but the returned coll throws
an UnsupportedOperationException if I try to count it
3. The weird thing is that the ancestors seem to be the same as with a
set, #{}
Details:
----------
A. Method
(defn get-wordlist
([] (set ["a" "b" "c"]))
([f] (set (read-lines f)))
([a & rest] (set (cons a rest))))
B. Ancestors look to be the same as for #{}
user=> (ancestors (class (toddg.spell/get-wordlist)))
#{java.io.Serializable clojure.lang.IPersistentSet java.lang.Object
clojure.lang.Seqable clojure.lang.IPersistentCollection
clojure.lang.IObj java.util.Set clojure.lang.AFn java.lang.Runnable
clojure.lang.IFn clojure.lang.IEditableCollection java.util.Collection
clojure.lang.APersistentSet java.util.concurrent.Callable
clojure.lang.Counted clojure.lang.IMeta java.lang.Iterable}
user=> (ancestors (class #{ "a" "b"}))
#{java.io.Serializable clojure.lang.IPersistentSet java.lang.Object
clojure.lang.Seqable clojure.lang.IPersistentCollection
clojure.lang.IObj java.util.Set clojure.lang.AFn java.lang.Runnable
clojure.lang.IFn clojure.lang.IEditableCollection java.util.Collection
clojure.lang.APersistentSet java.util.concurrent.Callable
clojure.lang.Counted clojure.lang.IMeta java.lang.Iterable}
C. Method throws UOE when I try and count the set
(count toddg.spell/get-wordlist)
java.lang.UnsupportedOperationException: count not supported on this
type: spell$get_wordlist__827 (NO_SOURCE_FILE:0)
D. This works on a normal set...
user=> (count #{ "a" "b"})
2
Note: the reason I'm trying to count the set is b/c that's what the
set methods do (intersection, etc.), and that's what I'm ultimately
trying to do. So, what am I missing here, and how would I better debug
this in the future?
-Todd
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