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<paulapatience>
How are you supposed to pronounce subseq? 'Subseek' and 'subseck' come to mind as options.
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<Bubblegumdrop>
sub sikh is how I pronounce it
<Bubblegumdrop>
sub sequence
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<paulapatience>
Well subsequence would be pronounced sub seek wince
<paulapatience>
Subsequent would be pronounced sub sick wint
<bike>
subseek is what i've settled on
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<beach>
Bubblegumdrop: No, I haven't. We are working on something that will be much better for editing Common Lisp code, so I haven't bothered. Then, perhaps I should use Lem rather than Emacs for stuff other than Common Lisp code.
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<aeth>
I've always called it subsek, not subseek
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<skin>
I have a question regarding unicode support. I know SBCL has it; e.g. `(code-char some-character)` will return that character's unicode code point.
<skin>
(I know about how some graphemes comprise multiple code points, just bear with me)
<skin>
What other implementations are known to support unicode in this way?
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<beach>
Did you mean CHAR-CODE?
<skin>
yeah, that one
<skin>
sorry I mix them up
<skin>
How does modern CL deal with unicode?
<beach>
My guess is "not very well". But there is a cl-unicode library by Edi Weitz that some might use.
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<skin>
OK. So I can basically count on this, more or less.
<skin>
Helpful thanks
<Shinmera>
doing anything else would be very foolhardy
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<aeth>
unfortunately, last I checked, most unicode-specific functionality seems to be available in SBCL as sb-unicode and not available portably, while most "unicode" libraries are more about various encodings rather than things like sb-unicode:casefold... perhaps other implementations have similar functionality, in which case a portability library is needed
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<Bubblegumdrop>
Oh man, I always mix up char-code and code-char. Is there a better way to remember which is which?
<Bubblegumdrop>
char->code and code->char ?
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<ajoberstar>
Bubblegumdrop: I guess in a OO sense it's kinda like char-code = char.code()
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<Bubblegumdrop>
that's kinda helpful
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<aeth>
it is basically char->code and code->char yes
<aeth>
in fact, those names would be better so I could imagine an alternate universe where those were the names
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<aeth>
though I don't think those -> names exist in CL, while iirc they do in Scheme
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<Bubblegumdrop>
I usually carry around my own toolkit.lisp from project to project. That's going in there for sure.
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<Bubblegumdrop>
Maybe It's time I made my own toolkit package?
<Bubblegumdrop>
etw.cl the extensible toolkit framework
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<aeth>
if you're just going to rename something, don't forget to inline it... there are also other ways to rename something, such as e.g. (setf (fdefinition 'add) #'+) but that seems hackier than having a one-line inline function, where the main disadvantage is that e.g. SBCL by default has an *inline-expansion-limit* of 50 and you can definitely hit that because it's 50 for an entire function
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<Bubblegumdrop>
cries in only-once
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<Bubblegumdrop>
my copy of PCL should be in my mailbox, let me go check :)
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<_death>
using your own names for CL operators is digging an esoteric hole for yourself, and perhaps later on asking everyone who reads your code to come along.. similar to having your own similar-but-different operators.. basically inventing a private language. it's a rite of passage, every lisper goes through it, but abstractions have a cost, so maybe it's better to limit the language invention to your actual application's domain
<mfiano>
I was bored today, so I decided to really study the simple and classic Norvig cons-based queue algorithm. I've been using it for a while in various codes, but haven't sat down to study how it works in detail in some years. I figured out the symmetric analog of storing the tail in the car of the cons, and discovered that it costs an extra traversal for deletion and obtaining the queued elements,
<mfiano>
and removes a traversal from insertion. I'm not too sure if I care. It was just a fun 10 minute experiment. Though interesting that insertion becomes less expensive.
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<Bubblegumdrop>
I ordered a paperback but they sent me a hardcover! happy day.
<Bubblegumdrop>
Thanks SFPL!
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<mfiano>
I suppose I should read the subject matter more fully instead of going by my notes and comments.
<mfiano>
He explored this as well, in his last example of removing the boundary test, and noticed the extra traversal. If the cons queue is reversed, that extra traversal is removed and put in another place, deletion.
<Bubblegumdrop>
oh the reverse reverse
<Bubblegumdrop>
having to explain that to people who don't understand cons...
<Bubblegumdrop>
"why is it backwards?" - "it isn't..."
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<mfiano>
it should be noted that insertion and deletion have to be measured for your domain. That is, if you can't afford a vector implementation. It should also be noted that his queue-elements and dequeue functions both increased in traversal with the reverse, but insertion decreases.
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<mfiano>
Let's see if I can get the bot to play
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<Bubblegumdrop>
I think I did try using vectors but had some esoteric use case that they didn't support, I don't remember why I chose to use plain cons instead
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<Bubblegumdrop>
I think I tried arrays too? I actually think I just literally did not understand them at the time.
<mfiano>
The latter would just be the inverse of his "removing the boundaries" implementation, with the noted advantage/disadvantages
<mfiano>
Bubblegumdrop: a vector is an array
<Bubblegumdrop>
indeed
<Bubblegumdrop>
that was part of the struggle
<Bubblegumdrop>
I'm kinda new to lisp.
<mfiano>
Yes, it's just that not all arrays are vectors, and not all vectors are simple-arrays, and not all non-simple-array vectors are not simple-vectors....
<mfiano>
I can see the confusion
<Bubblegumdrop>
That was the confusion indeed.
<Bubblegumdrop>
I should make an effort spending some time with arrays.
<Bubblegumdrop>
This page on the cookbook is good and I'm looking forward to reading PCL.
<ixelp>
Hunchentoot - The Common Lisp web server formerly known as TBNL
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<Kingsy>
skin: I have looked over this a few times, but it still doesnt really answer my question. for example. I want to return JSON objects not templates. I also want to be able to specify the object that is returned based on the condition that is raised. I don't see how that is done with the items listed here.
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<Kingsy>
the docs are vague. I can see there is a hunchentoot-error class but there is absoutely no information on how it works. What can be overriden and how? etc etc.
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<Bubblegumdrop>
Kingsy if you want to return json you may need to set the content type or something, caveman has this
<Bubblegumdrop>
Kingsy I struggled with the condition system at first too, it's not specific to hunchentoot although hunchentoot may hook into it specifically
<Kingsy>
no I understand that. but its more core than that.
<Bubblegumdrop>
Yeah you were trying to do something like "catch the error and return json if so"
<Kingsy>
if something goes wrong, in general, it returns an error template for the 500.. I want to change that. so it never returns HTML. ever
<Bubblegumdrop>
If you're able to explain what you want/are trying to acheive in english it's helpful as well
<Bubblegumdrop>
Yes that can be done
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<Bubblegumdrop>
I will get back to you if I figure out.
<Bubblegumdrop>
(I did this using caveman
<Bubblegumdrop>
)
<Kingsy>
so lets start with the simple example. I want to. catch ANY error that is thrown during the execution of a route, and return a custom json object, set the content type as you showed. but also log the stack trace to the repl
<Bubblegumdrop>
well, caveman just uses hunchentoot underneath
<Bubblegumdrop>
or woo
<Bubblegumdrop>
or whatever honestly
<Kingsy>
yeah this is just a learning exercise. I know there are things out there that would make this a lot easier
<Bubblegumdrop>
mm yeah so you'll have to wrap all that in a progn if you're using your lambda thingy with ,@body
<Bubblegumdrop>
if you want to evaluate more than one form you should use progn
<Bubblegumdrop>
You should be able to just add (log-whatever ..) in the progn and it should just work
<Bubblegumdrop>
However there may be things like the default stream isn't *standard-output*
<Bubblegumdrop>
I will have to look and see.
<Bubblegumdrop>
give me a moment, I'm preparing dinner. chicken and eggplant parm :)
<Kingsy>
Bubblegumdrop: no I got that working. but it meant it stopped logging to REPL, which didnt help. it meant I didnt know what was going on
<Kingsy>
it also got me thinking about what happens when it is deployed. we probably want different error handling based on production and not. so I was just looking for general advice.
<ixelp>
Bubblegumdrop/cl-deck-builder2: Yu-Gi-Oh! Deck Building and Card Inventory Management web interface written in Common Li [...]
<Kingsy>
no this is fune, but it doesnt answer the hunchentoot question. I don't know how to properly catch and return different custom objects based on conditions whilst controlling the REPL. the way I am doing it right now feels wrong
<ixelp>
Hunchentoot - The Common Lisp web server formerly known as TBNL
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<Bubblegumdrop>
it looks like by default things go to *standard-error*
<Bubblegumdrop>
I've never used *standard-error* lol
<Kingsy>
I'll just try and play with it. thanks for the info!
<Bubblegumdrop>
Derived acceptor classes can implement methods for the ACCEPTOR-LOG-MESSAGE and ACCEPTOR-LOG-ACCESS generic functions
<Bubblegumdrop>
So I think what you'll want to do is have your own acceptor class that subclasses ACCEPETOR: (defclass my-acceptor (hunchentoot:acceptor) ...)
<Bubblegumdrop>
Then pass that to the thingy instead of the default acceptor or whatever you're using now.
<Bubblegumdrop>
You'll want to specialize on ACCEPTOR-LOG-MESSAGE and etc for that class like so: (defmethod acceptor-log-message :after ((obj my-acceptor) ..) ..)
<Bubblegumdrop>
I think.
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<Bubblegumdrop>
You can do things like open a log file and save it with defparameter or defvar, (defparameter *my-log-file* (open ...))
<Bubblegumdrop>
I think you should be able to output to the repl like this as well
<Bubblegumdrop>
I'm not sure if hunchentoot uses threads, but threads make this a whole lot more fun.
<Bubblegumdrop>
and by that I mean, *standard-output* of your REPL is *not* *standard-output* of the thread hunchentoot is executing on
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<Bubblegumdrop>
verbose handles all of that transparently
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<Kingsy>
well I wrote a simple logger and just outputs with format. so I am going to try and use that. will see how it goes.
<Kingsy>
interesting thoughts around threads. I don't know if thats needed yet
<Bubblegumdrop>
GL!
<Bubblegumdrop>
perhaps look for other applications making use of hunchentoot
<Bubblegumdrop>
I don't know any off the top of my head,