clojure.core.reducers/folder

function

since v0.0-1236

clojure.core.reducers/folder

Edit

---

Source docstring:

Given a foldable collection, and a transformation function xf,
returns a foldable collection, where any supplied reducing
fn will be transformed by xf. xf is a function of reducing fn to
reducing fn.

(defn folder
  ([coll xf]
     (reify
       cljs.core/IReduce
       (-reduce [_ f1]
         (-reduce coll (xf f1) (f1)))
       (-reduce [_ f1 init]
         (-reduce coll (xf f1) init))

       CollFold
       (coll-fold [_ n combinef reducef]
         (coll-fold coll n combinef (xf reducef))))))

---