[aklug] OT: Clojure help
Christopher Howard
christopher.howard at qlfiles.net
Fri May 26 05:07:28 AKDT 2017
Is there a Clojure programmer on one of these lists who wouldn't mind
corresponding with a Clojure n00b to answer a few basic questions? Here
is the first one:
When I run
tutorial.core> (let [img (new-image 32 32)] (set-pixel img 10 10 cyan)
(show img))
from the REPL, this returns a javax.swing.JFrame object, and displays
the frame and image as expected. However, if put the same in
(defn -main
"Generates image."
[& args]
(let [img (new-image 32 32)]
(set-pixel img 10 10 cyan)
(show img)))
in more core.clj, and run (-main) from the REPL, I get error
ClassCastException java.awt.image.BufferedImage cannot be cast to
clojure.lang.IFn tutorial.core/-main (core.clj:11)
Why the difference?
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