Re: Stack traces

[Amirouche <amirouche@hypermove.net>]

Le 18/02/2017 à 17:58, Matt Wette a écrit :
>> On Feb 18, 2017, at 7:53 AM, Amirouche <amirouche@hypermove.net> wrote:
>> Le 18/02/2017 à 16:50, Amirouche a écrit :
>>> Le 18/02/2017 à 01:13, Matt Wette a écrit :
>>>> (use-modules (system repl repl))
>>>> (use-modules (system repl debug))
>>>>
>>>> (define-syntax-rule (trap-here)
>>>>    (start-repl
>>>>     #:debug (make-debug (stack->vector (make-stack #t)) 0 "trap!" #t)))
>>>>
>>>> (define (foo)
>>>>    (let iter ((sum 0) (vals '(1 2 3 5 8 2)))
>>>>      (trap-here)
>>>>      (if (null? vals) sum
>>>>     (iter (+ sum (car vals)) (cdr vals)))))
>>>>
>>>> (foo)
>>> It looks like that. Except `iter` should be defined in the namespace of the REPL.
>> Maybe iter is complicated, but at least sum and vals.
> Hmm.   The procedure “foo” without the "(trap-here)” is just a simple program (using named let) that I want to debug.
> So I add the “(trap-here)” to get into the debugger at that spot in the program, like I would add “pdb.set_trace()” in python.
>
> Matt
>

How do you access variables in the REPL?