0.9.4: add x/into-by-key, shorthand for (comp (x/by-key ..) (x/into ..))

README.md

@@ -9,7 +9,7 @@ More transducers and reducing functions for Clojure(script)!
 1-item transducers generally only make sense in the context of a higher-order transducer. 
 
  * regular ones: `partition` (1 arg), `reductions`, `for`, `take-last`, `drop-last`, `window` and `window-by-time`
- * higher-order ones: `by-key`, `multiplex`, `transjuxt`, `partition` (2+ args)
+ * higher-order ones: `by-key`, `into-by-key`, `multiplex`, `transjuxt`, `partition` (2+ args)
  * 1-item ones: `reduce`, `into`, `transjuxt`, `last`, `count`, `avg`, `sd`, `min`, `minimum`, `max`, `maximum`, `str`
  
 *Reducing functions* (in `net.cgrand.xforms.rfs`): `min`, `minimum`, `max`, `maximum`, `str`, `str!`, `avg`, `sd`, `juxt` and `last`.
@@ -21,7 +21,7 @@ Transducing contexts: `transjuxt` (for performing several transductions in a sin
 Add this dependency to your project:
 
 ```clj
-[net.cgrand/xforms "0.9.2"]
+[net.cgrand/xforms "0.9.4"]
 ```
 
 ```clj

project.clj

@@ -1,4 +1,4 @@
-(defproject net.cgrand/xforms "0.9.3"
+(defproject net.cgrand/xforms "0.9.4"
   :description "Extra transducers for Clojure"
   :url "https://github.com/cgrand/xforms"
   :license {:name "Eclipse Public License"

src/net/cgrand/xforms.cljc

@@ -278,6 +278,11 @@
                       acc)))
                 ([acc k v] (self acc #?(:clj (clojure.lang.MapEntry. k v) :cljs [k v])))))))))))
 
+(defn into-by-key
+  "A shorthand for the common case (comp (x/by-key ...) (x/into {}))."
+  [coll & by-key-args]
+  (comp (apply by-key by-key-args) (into coll)))
+
 (macros/replace
   [#?(:cljs {(java.util.ArrayDeque. n) (Queue.)
              .add .enqueue