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5:15:43
fiddlerwoaroof
"The little prover" is a really interesting nice introduction to the underlying system
5:19:10
LdBeth
#'no-defun-allowed: in prolog you can define relations and ask what’s the relation between two term
5:48:47
no-defun-allowed
yes, they're only the same in the --horrible and out of tune-- equal temperament tuning
5:51:39
no-defun-allowed
(it's annoying that all the nice ratios like 3:2 for a perfect fifth are off)
6:12:13
elderK
Guys, question: How am I meant to parse: " defgeneric function-name gf-lambda-list [[option | {method-description}*]]"
6:12:28
elderK
As far as I read that, it says we can have only /one/ option. But we can have zero or more method-descriptions.
6:12:52
elderK
But the CLHS states you can have multiple options - as long as each is specified once?
6:51:56
beach
It is quite confusing, but I think if one takes the time to read it, it might become clear. :)
7:58:47
cupholder
I'm doing the exercises from Norvig's PAIP to learn CL, and noticed something weird. He says compilation makes functions 300+ times faster, but trying his "f" function on an input of a billion (to see the running time difference on a modern computer) gives me 4.919s for the interpreted version and 4.918 for the compiled version.
8:00:13
cupholder
To make sure I wasn't crazy, I wrote a basic recursive fibonacci function and timed it. It came out to 4.063s for the interpreted version and 4.064s for the compiled version. In both cases, I ran the function with the timer after defining it in the repl, entered (compile 'f) or (compile 'fib), and ran it again.
8:08:32
cupholder
The explicitly-compiled version runs with the same time on subsequent runs. Did SBCL produce a different binary for the same code? Is it non-deterministic?
8:11:35
jdz
I don't know. I'd rather forget a thing or two now and then than one bit flip in my brain crash the whole thing.
10:53:47
jmercouris
both logs are not working, can someone please remind me what I need to put in my SBCLRC to enable debugging?
10:57:09
jackdaniel
what is "enable debugging"? what logs? you'll get dropped in a debugger for unhandled errors without any magic things in sbclrc
10:58:20
jmercouris
sorry yes, I mean with regards to stepping through a restart after recompiling a function
10:58:45
jmercouris
so, when a signal is raised (I think that's how you say it) and you get the debug menu, I want to be able to recompile the function and restart from a previous frame
10:59:09
oni-on-ion
(declare (optimize (debug 3))) in sbclrc though, i've been suggested here before.
10:59:40
jmercouris
there was someone who had posted a slightly different solution, I just can't find it in the logs :\
11:00:23
oni-on-ion
or -> https://stackoverflow.com/questions/4638710/maximum-debug-info-from-steel-bank-common-lisp-slime
11:00:26
jmercouris
if I remember or find what that other user had posted, I will repost tot his channel
13:58:18
dim
that's with Welcome to Clozure Common Lisp Version 1.11-r16635 (DarwinX8632)! on macOS Mojave
14:03:25
jdz
dim: I think there's a release of ccl compatible with latest macOS, read something about those lines on the mailing list.
14:04:56
jdz
"sudo installer -store -pkg ccl.pkg -target /" on the http://setf.clozure.com/~rme/ccl.pkg
14:18:33
dim
seems to work fine, thanks, but I need to learn how to use it from SLIME rather than with the integrated GUI
14:25:41
jdz
If it's about Common Lisp, then iterate predates CL (year 1990, http://dspace.mit.edu/handle/1721.1/41498?show=full).
14:36:06
pfdietz
I'm grumpy about ITERATE. It doesn't work with COVER. Hacking COVER to make it work with it is on my to-do list.
14:44:01
astalla
There's also my "doplus" library that predates FOR: https://bitbucket.org/alessiostalla/doplus/wiki/Home
17:13:51
beach
HAH! "A key concept in all operating systems is the /process/." From Tanenbaum and Bos: Modern Operating Systems.