First of all, def in a fn body is antipattern (use let), then do into on a
itself
(defn concat_ [a b]
(if (vector? a)
(into a b)
(concat a b)))
четверг, 19 июля 2018 г., 4:07:46 UTC+7 пользователь Christian Seberino
написал:
>
> I'm just a Clojure beginner but it seems that the Lisp Way(TM) is to
> append and prepend one or more elements
> with a single command if possible. The logical name for this command
> seems to be concat which led to this..
>
> (defn concat_ [a b]
> (def c (concat a b))
> (if (vector? a)
> (into [] c)
> c))
>
> (concat_ [1 2] [3 4]) => [1 2 3 4]
>
> (concat_ '(1 2) '(3 4)) => (1 2 3 4)
>
> (concat_ [1] [2 3]) => [1 2 3]
>
> Lists return lists and vectors return vectors. Simple.
> Yes yes I know it is slow. I also know I need to expand concat_ to handle
> other data structures.
>
> In my little newbie world, this "feels" like the ultimate "right" solution.
>
> Chris
>
>
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
---
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to clojure+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
