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You're viewing version 1.2.0 of replace. The latest stable version of Clojure Core is 1.3.0.

doc source examples comments

1.2.0

1.2.0
1.3.0

replace

clojure.core

(replace smap coll)

Given a map of replacement pairs and a vector/collection, returns a
vector/seq with any elements = a key in smap replaced with the
corresponding val in smap

2 Examples top

link | changes
```
user=> (replace [:zeroth :first :second :third :fourth] [0 2 4 0])
[:zeroth :second :fourth :zeroth]

user=> (replace [10 9 8 7 6] [0 2 4])
[10 8 6]
```
user=> (replace [:zeroth :first :second :third :fourth] [0 2 4 0]) [:zeroth :second :fourth :zeroth] user=> (replace [10 9 8 7 6] [0 2 4]) [10 8 6]
link | changes
```
user=> (replace '{0 ZERO, 1 ONE, 2 TWO} '(This is the code — 0 1 2 0))
(This is the code — ZERO ONE TWO ZERO)

user=> (replace {2 :two, 4 :four} [4 2 3 4 5 6 2])
[:four :two 3 :four 5 6 :two]
```
user=> (replace '{0 ZERO, 1 ONE, 2 TWO} '(This is the code — 0 1 2 0)) (This is the code — ZERO ONE TWO ZERO) user=> (replace {2 :two, 4 :four} [4 2 3 4 5 6 2]) [:four :two 3 :four 5 6 :two]

Source clojure/core.clj:3979 top

(defn replace
  "Given a map of replacement pairs and a vector/collection, returns a
  vector/seq with any elements = a key in smap replaced with the
  corresponding val in smap"
  {:added "1.0"}
  [smap coll]
    (if (vector? coll)
      (reduce (fn [v i]
                (if-let [e (find smap (nth v i))]
                        (assoc v i (val e))
                        v))
              coll (range (count coll)))
      (map #(if-let [e (find smap %)] (val e) %) coll)))

Vars in clojure.core/replace: assoc count defn fn if-let map range reduce val vector?

Used in 12 other vars replace append-child edit replace insert-child chomp rtrim replace ltrim ns->path path->ns deep-replace

Comments top

1 comment(s) for replace.

jneira

link

The behaviour for vectors was a little strange for me. I'd say replace "selects" from "smap" the indexes which are in "coll"

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