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make non 1 or 2 count case update-last faster for vectors, change updateextremes to be specific to persistentvector

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This commit is contained in:
Nathan Marz 2016-06-01 12:54:59 -04:00
parent 2fe16769ff
commit 187299b3d9
1 changed files with 4 additions and 3 deletions
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7
src/clj/com/rpl/specter/impl.cljx
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@ -465,7 +465,7 @@
(count v))
(extend-protocol UpdateExtremes
#+clj clojure.lang.IPersistentVector #+cljs cljs.core/PersistentVector
#+clj clojure.lang.PersistentVector #+cljs cljs.core/PersistentVector
(update-first [v afn]
(let [val (nth v 0)]
(assoc v 0 (afn val))
@ -475,8 +475,9 @@
(case c
1 (let [[e] v] [(afn e)])
2 (let [[e1 e2] v] [e1 (afn e2)])
(conj (pop v) (afn (peek v)))
)))
(let [i (dec c)]
(assoc v i (afn (nth v i)))
))))
#+clj Object #+cljs default
(update-first [l val]
(update-first-list l val))