blob: 8611916f420cceac2911cb2c663791e9bf99c477 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
;; Generic interface for functors
;; by Konrad Hinsen
;; last updated March 23, 2009
;; Copyright (c) Konrad Hinsen, 2009. All rights reserved. The use
;; and distribution terms for this software are covered by the Eclipse
;; Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
;; which can be found in the file epl-v10.html at the root of this
;; distribution. By using this software in any fashion, you are
;; agreeing to be bound by the terms of this license. You must not
;; remove this notice, or any other, from this software.
(ns clojure.contrib.generic.functor
"Generic functor interface")
(defmulti fmap
"Applies function f to each item in the data structure s and returns
a structure of the same kind."
{:arglists '([f s])}
(fn [f s] (type s)))
(defmethod fmap clojure.lang.IPersistentList
[f v]
(into (empty v) (map f v)))
(defmethod fmap clojure.lang.IPersistentVector
[f v]
(into (empty v) (map f v)))
(defmethod fmap clojure.lang.IPersistentMap
[f m]
(into (empty m) (for [[k v] m] [k (f v)])))
(defmethod fmap clojure.lang.IPersistentSet
[f s]
(into (empty s) (map f s)))
|
