Hi all,
in the following, set is clojure.set, and r is clojure.core reducers.
Why is
user> (reduce set/intersection (map set [[1 2] [3 1] [1 3]]))
#{1}
but
user> (reduce set/intersection (r/map set [[1 2] [3 1] [1 3]]))
ArityException Wrong number of args (0) passed to: set$intersection
clojure.lang.AFn.throwArity (AFn.java:437)
The clojure.core/reduce docs state that when there's no init value, the
reduce function is called with the first two elements of the coll.
The behavior of calling the reduce function with no arguments to create
an init value is specified for r/reduce, but I'm not using that.
Is that a bug, or should I not expect that clojure.core/reduce works
with reducible collections? (I've not followed which reducer changes
were made in clojure 1.5.1.)
Bye,
Tassilo
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