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22:47:40
Bike
brainfuck didn't "become" useful anyway, it's essentially identical to P'', invented in 1964
22:48:22
aeth
I tried writing a CL in Brainfuck, but then I realized that it's at least 10x harder than writing one in asm, and asm would at least be useful to someone.
22:49:18
void_pointer
Bike: sounds like clasp's bootstrapping situation isn't that bad, unless it takes forever as C++ often does (now reminded of how bootstrapping Guile can take well over an hour)
22:49:24
aeth
Writing directly to some VM's register machine or stack machine is probably considerably easier than BF.
22:49:44
Bike
it would be far more sensible to build from something else, and i've done some work in that direction, but that's still hard
22:50:48
aeth
I think the only way to have useful BF as a compilation target is to move the world around some central area (so it's always close by) as you walk through the BF tape. Or perhaps have two BFs talk to each other.
22:52:41
aeth
C++'s focus is on adding very many "zero cost" (at runtime! not at compile time!) abstractions.
22:53:37
aeth
An extended macro system could probably do something very similar to what C++ does in a Lisp without the massive time penalties of C++ compilation.
23:01:14
rme
It bootstraps by writing a minimal image file (which it constructs in memory), and alsocompiling (or cross-compiling) additional source files that comprise the rest of the lisp. You can then start the bootstrap image, which will then load those fasl files. Then you save an image of the lisp you just made.
23:10:22
phoe
so basically, as soon as someone can create a minimal image file outside CCL, then CCL becomes sanely bootstrappable?
23:21:29
phoe
I looked at CCL's bootstrapping process some time ago and I wouldn't call it mad, if that's what I accidentally implied.
23:24:17
aeth
Ahah! At least in SBCL, I can do this: (deftype false () `(member :false)) and then these are essentially identical: (defun foo (x) (typep foo 'nil)) (defun foobar (x) (typep x 'false))
23:24:39
aeth
At least one more point in favor of using a keyword or symbol when embedding a language that requires separating false and '()
23:26:25
aeth
Ahah! At least in SBCL, I can do this: (deftype false () `(member :false)) and then these are essentially identical: (defun foo (x) (typep foo 'null)) (defun foobar (x) (typep x 'false))
3:19:37
jcowan
perhaps sbcl stands for sanely bootstrappable common lisp, at least some of the time?
8:39:58
shrdlu68
flip214: How did you solve the multithreading thing where different threads were writing to a stream?
8:41:19
flip214
I was stumbling about having :if-already-exists :append and did look at old data in that file.
8:57:53
jeosol
flip214: had similar problems with my parallel code, and used with (bt:with-lock-held ...)
9:17:54
MrMc
I am trying to use parenscript with the Chartist javascript library how do I get parenscript to emmit new Chartist.Line('.ct-chart', data);
9:20:17
MrMc
The challenge is that this is wrapped as a function returning new Chartist.Line('.ct-chart', data)