I have now noticed that these two are also very similar:
clojure.stacktrace/print-stack-trace
clojure.repl/pst ; (for Print Stack Trace)
Here is their output for the same error:
user=> (char 0 0 0)
CompilerException clojure.lang.ArityException: Wrong number of args (3)
passed to: core/char--inliner,
compiling:(/tmp/form-init9068522213039312274.clj:1:1)
user=> (clojure.stacktrace/print-stack-trace *e)
clojure.lang.Compiler$CompilerException: clojure.lang.ArityException: Wrong
number of args (3) passed to: core/char--inliner,
compiling:(/tmp/form-init9068522213039312274.clj:1:1)
at clojure.lang.Compiler.analyzeSeq (Compiler.java:6651)
clojure.lang.Compiler.analyze (Compiler.java:6445)
clojure.lang.Compiler.analyze (Compiler.java:6406)
clojure.lang.Compiler$BodyExpr$Parser.parse (Compiler.java:5782)
clojure.lang.Compiler$FnMethod.parse (Compiler.java:5217)
clojure.lang.Compiler$FnExpr.parse (Compiler.java:3846)
clojure.lang.Compiler.analyzeSeq (Compiler.java:6642)
clojure.lang.Compiler.analyze (Compiler.java:6445)
clojure.lang.Compiler.eval (Compiler.java:6700)
clojure.lang.Compiler.eval (Compiler.java:6666)
clojure.core$eval.invoke (core.clj:2927)
clojure.main$repl$read_eval_print__6625$fn__6628.invoke (main.clj:239)
clojure.main$repl$read_eval_print__6625.invoke (main.clj:239)
clojure.main$repl$fn__6634.invoke (main.clj:257)
clojure.main$repl.doInvoke (main.clj:257)
clojure.lang.RestFn.invoke (RestFn.java:1096)
clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__591.invoke
(interruptible_eval.clj:56)
clojure.lang.AFn.applyToHelper (AFn.java:152)
clojure.lang.AFn.applyTo (AFn.java:144)
clojure.core$apply.invoke (core.clj:624)
clojure.core$with_bindings_STAR_.doInvoke (core.clj:1862)
clojure.lang.RestFn.invoke (RestFn.java:425)
clojure.tools.nrepl.middleware.interruptible_eval$evaluate.invoke
(interruptible_eval.clj:41)
clojure.tools.nrepl.middleware.interruptible_eval$interruptible_eval$fn__632$fn__635.invoke
(interruptible_eval.clj:171)
clojure.core$comp$fn__4192.invoke (core.clj:2402)
clojure.tools.nrepl.middleware.interruptible_eval$run_next$fn__625.invoke
(interruptible_eval.clj:138)
clojure.lang.AFn.run (AFn.java:22)
java.util.concurrent.ThreadPoolExecutor.runWorker
(ThreadPoolExecutor.java:1145)
java.util.concurrent.ThreadPoolExecutor$Worker.run
(ThreadPoolExecutor.java:615)
java.lang.Thread.run (Thread.java:744)
nil
user=> (clojure.repl/pst *e)
CompilerException clojure.lang.ArityException: Wrong number of args (3)
passed to: core/char--inliner,
compiling:(/tmp/form-init9068522213039312274.clj:1:1)
clojure.lang.Compiler.analyzeSeq (Compiler.java:6651)
clojure.lang.Compiler.analyze (Compiler.java:6445)
clojure.lang.Compiler.analyze (Compiler.java:6406)
clojure.lang.Compiler$BodyExpr$Parser.parse (Compiler.java:5782)
clojure.lang.Compiler$FnMethod.parse (Compiler.java:5217)
clojure.lang.Compiler$FnExpr.parse (Compiler.java:3846)
clojure.lang.Compiler.analyzeSeq (Compiler.java:6642)
clojure.lang.Compiler.analyze (Compiler.java:6445)
clojure.lang.Compiler.eval (Compiler.java:6700)
clojure.lang.Compiler.eval (Compiler.java:6666)
clojure.core/eval (core.clj:2927)
clojure.main/repl/read-eval-print--6625/fn--6628 (main.clj:239)
Caused by:
ArityException Wrong number of args (3) passed to: core/char--inliner
clojure.lang.Compiler.analyzeSeq (Compiler.java:6639)
clojure.lang.Compiler.analyze (Compiler.java:6445)
clojure.lang.Compiler.analyze (Compiler.java:6406)
clojure.lang.Compiler$BodyExpr$Parser.parse (Compiler.java:5782)
clojure.lang.Compiler$FnMethod.parse (Compiler.java:5217)
clojure.lang.Compiler$FnExpr.parse (Compiler.java:3846)
nil
The top part of their output is the same, but not the bottom.
If no-one comes up with an explanation, I'll use both until I understand
which one is more useful to me, and report back here if I remember
(hopefully!)
On Monday, 21 July 2014 12:30:17 UTC+1, Pierre Masci wrote:
>
> Hi, I'm learning about tools to help me debug from the REPL, and I found
> these two with the same name:
>
> clojure.stacktrace/root-cause
>
> clojure.repl/root-cause
>
> For a very simple case (wrong arity), they give pretty similar output:
>
> user=> (char 0 0 0)
> CompilerException clojure.lang.ArityException: Wrong number of args
> (3) passed to: core/char--inliner,
> compiling:(/tmp/form-init6819528724684564936.clj:1:1)
>
> user=> (clojure.stacktrace/root-cause *e)
> #<ArityException clojure.lang.ArityException: Wrong number of args (3)
> passed to: core/char--inliner>
>
> user=> (clojure.repl/root-cause *e)
> #<CompilerException clojure.lang.ArityException: Wrong number of args
> (3) passed to: core/char--inliner,
> compiling:(/tmp/form-init6819528724684564936.clj:1:1)>
>
>
> I looked at the source code and they look fairly similar, but I didn't
> understand the exact details.
>
> If they do the same job, then which one does it best?
>
> If they perform different roles, then could you describe the difference to
> a user who doesn't need to understand the internals? ( I'm happy to
> understand them if you are willing to explain, though :) )
>
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