How could I call a function with a string? e.g. something like this:
(call "zero?" 1) ;=> false
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It doesn't work in clojurescript.Jp_– Jp_2019-02-20 00:15:43 +00:00Commented Feb 20, 2019 at 0:15
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2 Answers
Something like:
(defn call [^String nm & args]
(when-let [fun (ns-resolve *ns* (symbol nm))]
(apply fun args)))
2 Comments
Ashley Williams
Thanks,
ns-resolve in particular was what I was looking for.
Alex Ott
it's better also to combine ns-resolve together with fn? to check, that symbol is function
A simple answer:
(defn call [this & that]
(apply (resolve (symbol this)) that))
(call "zero?" 1)
;=> false
Just for fun:
(defn call [this & that]
(cond
(string? this) (apply (resolve (symbol this)) that)
(fn? this) (apply this that)
:else (conj that this)))
(call "+" 1 2 3) ;=> 6
(call + 1 2 3) ;=> 6
(call 1 2 3) ;=> (1 2 3)
