In common lisp I can do this:
src-> (defmacro macro-hello () `"hello")
(eval '(macro-hello))
no problem.
In clojure:
(defmacro macro-hello [] `"hello")
(eval '(macro-hello))
gives me an error. Have I done something wrong? After further
investigation I found that a pre-defined macro/function works just
fine.
(eval '(= 0 0))
Any macro/function i define doesn't.
Clojure Error:
Exception in thread "main" java.lang.Exception: Unable to resolve
symbol: macro-hello in this context (NO_SOURCE_FILE:12)
at clojure.lang.Compiler.analyze(Compiler.java:4340)
at clojure.lang.Compiler.analyze(Compiler.java:4286)
at clojure.lang.Compiler$InvokeExpr.parse(Compiler.java:2767)
at clojure.lang.Compiler.analyzeSeq(Compiler.java:4498)
at clojure.lang.Compiler.analyze(Compiler.java:4325)
at clojure.lang.Compiler.analyze(Compiler.java:4286)
at clojure.lang.Compiler$BodyExpr$Parser.parse(Compiler.java:
3862)
at clojure.lang.Compiler$FnMethod.parse(Compiler.java:3697)
at clojure.lang.Compiler$FnMethod.access$1100(Compiler.java:
3574)
at clojure.lang.Compiler$FnExpr.parse(Compiler.java:
2963) at clojure.lang.Compiler$FnExpr.parse(Compiler.java:2963)
at clojure.lang.Compiler.analyzeSeq(Compiler.java:4494)
at clojure.lang.Compiler.analyze(Compiler.java:4325)
at clojure.lang.Compiler.eval(Compiler.java:4530)
at clojure.core$eval__3990.invoke(core.clj:1728)
at com.yourcompany.defpackage$_main__4.invoke(defpackage.clj:
12)
at clojure.lang.AFn.applyToHelper(AFn.java:171)
at clojure.lang.AFn.applyTo(AFn.java:164)
at com.yourcompany.defpackage.main(Unknown Source)
Caused by: java.lang.Exception: Unable to resolve symbol: macro-hello
in this context
at clojure.lang.Compiler.resolveIn(Compiler.java:4682)
at clojure.lang.Compiler.resolve(Compiler.java:4628)
at clojure.lang.Compiler.analyzeSymbol(Compiler.java:4605)
at clojure.lang.Compiler.analyze(Compiler.java:4307)
... 17 more
Java Result: 1
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