Walkr (walk-reduce) is a Clojure library built to help you easily walk-reduce clojure data structures.
Here's a simple example.
(ns user
  (:require [walkr.core :as w]
            [clojure.string :as str]))
(w/prewalk-reduce
  (fn [acc item]
    (if (string? item)
      [(conj acc (str/lower-case item)) (str/upper-case item)]
      [acc item]))
  #{}
  [{:foo {:bar {:value #{"cOlD"}}
                      :other "hOt"}}
   {:foo {:bar {:value "ColDer"}
          :other "hoTteR"}}])
;;; =>
;;; [#{"cold" "hot" "colder" "hotter"}
;;;  [{:foo {:bar {:value #{"COLD"}}
;;;          :other "HOT"}}
;;;   {:foo {:bar {:value "COLDER"}
;;;          :other "HOTTER"}}]]See the existing tests for more examples.
walkr is built, tested, and deployed using Clojure Tools Deps.
GNU Make is used to simplify invocation of some commands.
gateless/walkr releases for this project are on Clojars. Simply add the following to your project:
- For any other questions or issues about walkr free to browse or open a Github Issue.
 
See CONTRIBUTING.md
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Copyright 2025 Gateless
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
