Hi everyone,
I came back to a project of mine after a couple of months only to be
surprised by some cryptic exception! Imagine a 2d vector:
(def coords [[0 0] [0 1] [1 0] [1 1]]) ;;vector of vectors of longs
;;but let's try ints which are cached:
(def coords
(mapv #(apply vector-of :int %) [[0 0] [0 1] [1 0] [1 1]]))
;;vector of vectors of ints
everything seems great right? well, now my namespaces don't even
compile! This is my representation of the 'board' in a game which means
that I'm only reading from this vector nothing else! I am getting
CompilerException java.lang.RuntimeException: Can't embed object in
code, maybe print-dup not defined: clojure.core$reify__6184@1eb42164,
compiling:(Clondie24/games/chess.clj:244:1) where line 244 is just a
'defn' with its argument vector...as soon as I comment out the
conversion to unboxed int primitives everything works again! doing (pst)
does not help at all! Look at this:
user=> (pst)
CompilerException java.lang.RuntimeException: Can't embed object in
code, maybe print-dup not defined: clojure.core$reify__6186@61c28cfb,
compiling:(Clondie24/games/chess.clj:244:1)
clojure.lang.Compiler.analyzeSeq (Compiler.java:6566)
clojure.lang.Compiler.analyze (Compiler.java:6360)
clojure.lang.Compiler.analyzeSeq (Compiler.java:6547)
clojure.lang.Compiler.analyze (Compiler.java:6360)
clojure.lang.Compiler.access$100 (Compiler.java:37)
clojure.lang.Compiler$DefExpr$Parser.parse (Compiler.java:528)
clojure.lang.Compiler.analyzeSeq (Compiler.java:6559)
clojure.lang.Compiler.analyze (Compiler.java:6360)
clojure.lang.Compiler.analyze (Compiler.java:6321)
clojure.lang.Compiler.eval (Compiler.java:6622)
clojure.lang.Compiler.load (Compiler.java:7062)
clojure.lang.RT.loadResourceScript (RT.java:361)
Caused by:
RuntimeException Can't embed object in code, maybe print-dup not
defined: clojure.core$reify__6186@61c28cfb
clojure.lang.Util.runtimeException (Util.java:219)
clojure.lang.Compiler$ObjExpr.emitValue (Compiler.java:4570)
clojure.lang.Compiler$ObjExpr.emitValue (Compiler.java:4496)
clojure.lang.Compiler$ObjExpr.emitListAsObjectArray
(Compiler.java:4392)
clojure.lang.Compiler$ObjExpr.emitValue (Compiler.java:4529)
clojure.lang.Compiler$ObjExpr.emitConstants (Compiler.java:4609)
clojure.lang.Compiler$ObjExpr.compile (Compiler.java:4072)
clojure.lang.Compiler$FnExpr.parse (Compiler.java:3808)
clojure.lang.Compiler.analyzeSeq (Compiler.java:6557)
clojure.lang.Compiler.analyze (Compiler.java:6360)
nil
this is clearly not my code! everything is clojure.lang.Compiler related!
what is happening exactly? can anyone explain? I'm not doing anything
'weird' in the function reported in the exception just reading the vector.
Jim
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