If you look at cljs counterpart of it you'll see that maps are send as
responses, that is why read-string is used.
HTH
Frank Siebenlist wrote:
Sorry - I've answered part of my own Q by reading the read-string doc…
nothing is eval'ed of the result - just the first "object" is read.
Still unclear why read-string is used - why would a second "object" be
discarded? Like:
user=> (read-string "(+ 1 2) (- 3 2)")
(+ 1 2)
Still confused...
-FS.
On Sep 18, 2012, at 11:51 PM, Frank
Siebenlist<frank.siebenl...@gmail.com> wrote:
I'm trying to understand the clojurescript-code of the repl
functionality, and I'm confused…
The following cljs.repl/eval-and-print function takes a cljs-form,
compiles it, sends it to the browser as javascript, and then receives
the result, and the… try's to use "read-string" on that return value:
---
(defn- eval-and-print [repl-env env form]
(let [ret (evaluate-form repl-env
(assoc env :ns (ana/get-namespace ana/*cljs-ns*))
"<cljs repl>"
form
(wrap-fn form))]
(try (prn (read-string ret))
(catch Exception e
(if (string? ret)
(println ret)
(prn nil))))))
---
Why does it call read-string on the returned result from the js-eval?
The eval'ed compiled javascript could result in a clojure-form that
would be eval'ed on the return (???), and the result of the latter is
then printed.
Confusingly yours, FrankS.
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