This will print all the debug information at compile time, which is
usually not what you want. I have a little macro I use called ?, which
looks like:
(defmacro ? [x]
`(let [x# ~x]
(prn '~x '~'is x#)
x#))
You could add file and line information to this fairly simply:
(defmacro ? [x]
(let [line (:line (meta &form))
file *file*]
`(let [x# ~x]
(println (pr-str '~x) "is" (pr-str x#)
(str "; (" ~file ":" ~line ")"))
x#)))
And use it like so:
user> (let [x 10]
(+ 5 (? x)))
x is 10 ; (NO_SOURCE_FILE:1)
15
On Dec 15, 5:19 am, Jay Fields <[email protected]> wrote:
> This should get you started:
>
> (defmacro debug [x]
> (println x)
> (println (pr-str &form))
> (println *file*)
> (println (meta &form)))
>
>
>
>
>
>
>
> On Thu, Dec 15, 2011 at 12:48 AM, jaime <[email protected]> wrote:
> > Hello there,
>
> > I want to write a function named "debug" which will print out "date-
> > time msg + current source-line + etc. info", but I don't know how to
> > get the current source and line number of the running point (just like
> > what REPL does when encounter any exceptions) ...
>
> > Got any ideas?
>
> > Thanks!
>
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