I like this:
(defmacro dump-locals []
`(clojure.pprint/pprint
~(into {} (map (fn [l] [`'~l l]) (reverse (keys &env))))))
Slingshot also allows one to throw+ an object that is full of local
information:
https://github.com/scgilardi/slingshot
And Michael Drogalis's library Dire recently adopted Slingshot for handling
exceptions:
https://github.com/MichaelDrogalis/dire
On Friday, December 27, 2013 11:18:04 PM UTC-5, guns wrote:
>
> On Fri 27 Dec 2013 at 11:03:20PM -0500, Lee Spector wrote:
>
> > On Dec 27, 2013, at 10:53 PM, Alex Baranosky wrote:
> >
> > > I always hear people say that the errors are bad, but I just don't
> > > see it. The stacktraces say exactly what went wrong and at what line
> > > of the source. To me that's all I can hope for.
>
> I'll have to agree with Alex, I've never really had that much of a
> problem with Clojure errors. A stacktrace is certainly better than
> "Segmentation fault".
>
> > One can hope to see the values of locals, which for me would make a
> > big difference. This is apparently possible (through some combination
> > of nrepl-ritz and avoiding locals clearing, I think), but not at all
> > easy. In other parts of the Lisp universe this has been standard for
> > decades and, I think, central to common debugging practices.
>
> I personally use the following macro from my user.clj:
>
> (defmacro dump-locals []
> `(clojure.pprint/pprint
> ~(into {} (map (fn [l] [`'~l l]) (reverse (keys &env))))))
>
> It's not the automatic break-on-exception-and-start-local-repl of CL +
> Emacs, but it's editor agnostic and usually does the trick.
>
> I find that my desires for a stepping debugger are mostly absent with
> Clojure as data is immutable, and the reference types may be monitored
> with add-watch.
>
> guns
>
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