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arohner/gist:7149600

Created October 25, 2013 04:57
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into-array>
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gistfile1.txt
(t/ann make-process [String -> java.lang.Process])
(defn make-process [script]
(let [^Runtime r (Runtime/getRuntime)
arr (t/into-array> String ["echo 'hello'"])]
(t/print-env "let")
(.exec r arr)))
@arohner

arohner commented Oct 25, 2013

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ExceptionInfo Internal Error (circle.scratch:14:5) Unresolved instance method invocation exec.

Hint: add type hints.

in: (.exec r arr) clojure.core/ex-info (core.clj:4327)

@frenchy64

frenchy64 commented Oct 25, 2013

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The problem was reflection:

(cf (fn make-process [script]
      {:post [%]}
      (let [^Runtime r (Runtime/getRuntime)
            _ (assert r)
            ^"[Ljava.lang.String;" arr (into-array> String ["echo 'hello'"])]
        (.exec r arr)))
    [String -> java.lang.Process])

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