Clojure Observable/from converts list to to an observable of a single (list) value

[ghost]

I'm trying out the clojure example code and the results seem wrong.

With the following:

(defn hello
  [& args]
  (-> (Observable/from args)
    (.subscribe (rx/action [v] (println (str "Hello " v "!"))))))

(hello "Ben" "George")

I expected the observable to emit two distinct values, "Ben" and "George", before completing, resulting in one line of output per name.

However, the repl output is:

Hello ("Ben" "George")!

So it seems the entire args list is emitted as a single value.

Tried 0.15.1 as well as current master at 7ec374c. clojure 1.5.1.

[ghost]

(defn hello
  [& args]
  (-> (Observable/from  '("Ben" "George") ) ; hardcode the list
    (.subscribe (rx/action [v] (println (str "Hello " v "!"))))))

(hello "Ben" "George")

Works fine. Very strange.

[daveray]

The Clojure compiler has many versions of Observable/from to choose from and here it picks the wrong one. You'll need to give it a hint:

(Observable/from ^java.lang.Iterable args)

that should do it.

[ghost]

Thanks, that works. Not cool though, it's reasonable to expect it to just work.

[daveray]

Welcome to Java interop with dynamic types.

[ghost]

:)