[slime-devel] Re: basic sldb question

Liam Healy lnp at healy.washington.dc.us
Sun Jul 13 18:49:27 UTC 2008


On Sun, Jul 13, 2008 at 8:31 AM, Helmut Eller <heller at common-lisp.net> wrote:
> * Stever [2008-07-13 05:21+0200] writes:
>
>> and run each line one by one?
>
> Stepping isn't so easy.
Very true.

> Few Lisp's support stepping line-by-line.
All ANSI CL support stepping form by form which is a more relevant measure
for lisp than line-by-line:
http://www.lispworks.com/documentation/HyperSpec/Body/m_step.htm#step
But in 20 years of Lisp programming darned if I've ever been able to
make this give me any useful information.  Reading the spec, I notice that
implementations are permitted to treat this essentially as just
execute the form.
That's never happened in my experience, but I've never clearly understood
on any implementation exactly what it is I am looking at.

Liam



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