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<thijso>
White_Flame: thanks for the explanation, I think I get it now
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<thijso>
If I do (ensure-directories-exist "~/.storage/3") and don't get an error, I should reasonably expect that directory to exist afterwards, right? Is there anything I'm missing? Or is ECL's implementation of that function broken? I really can't imagine that, but on the surface it does look like it...
<thijso>
The really strange thing is, that creating "~/.storage" the same way, just before, *does* work
<jackdaniel>
maybe you need to add the slash in the end?
<thijso>
Hhmmm, and if I do the full path without just .storage before, it only creates .storage, not the full one
<thijso>
jackdaniel: hmmm, let's see
<thijso>
Hah!
<jackdaniel>
because /foo/bar/qux is: directory /foo/bar/ and file qux
<thijso>
I knew I was doing something wron
<thijso>
that was it
<thijso>
jackdaniel: thanks!
<jackdaniel>
great, no problem :)
<jackdaniel>
if you have ecl-specific issues you are welcome to ask on #ecl channel
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<thijso>
Ah, yes, thanks, I'll join there too
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<Shinmera>
thijso: note that in Lisp the namestring "foo/bar" is always a file named "bar" in the directory "foo". If you expect it to be a directory, you need to add the trailing slash.
<Shinmera>
The confusion comes in because the implementation may treat the file "bar" as a directory on the filesystem too, since directories are also files.
<Shinmera>
Either way, to be portable, always include the trailing slash.
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<thijso>
Shinmera: yeah, I kinda knew this, but working often with files and directories in bash sorta trains you otherwise...
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<jdz>
I think it helps to remember that operations on pathnames don't touch the file system at all (except the functions that are specified to do just that, like PROBE-FILE and TRUENAME).
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* Shinmera
is reminded to make the sibling library to pathname-utils, filesystem-utils.
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<jcowan>
Is there a usual method of doing random access on ordinary files in CL implementations?
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<verisimilitude>
So, what are you working on?
<verisimilitude>
I'm working on TCP libraries, as I don't want to use USOCKET or IOlib.
<verisimilitude>
I have an experimental little TCP client library I've named EASY-PEASY-TCP I'm currently fiddling with; it's only useful for basic network clients, but it's only intended for such things.
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<clothespin_>
I'm working on mechanical CAD
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<Shinmera>
Working on a UI toolkit
<clothespin_>
I use your vector and matrix libs
<Shinmera>
Nice!
<Shinmera>
Hope there isn't too much trouble there :)
<clothespin_>
I'll try to submit a patch
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<clothespin_>
what are the details of your ui toolkit?
<Shinmera>
Uh, you'll have to be more specific than that.
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<Shinmera>
I'm not sure how to answer that question
<clothespin_>
is it completely lisp or does it wrap a c++ lib or something?
<Shinmera>
Lisp native
<Shinmera>
No point, otherwise.
<clothespin_>
I wrapped "Dear ImGui"
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<Shinmera>
Yeah, I'm trying really hard to reduce the number of foreign libraries to zero.
<clothespin_>
they are a hassell
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<Shinmera>
I'm also not a fan of immediate mode UIs, so that's another thing :)
<clothespin_>
Using Imgui has provided a cheap way of moving forward for me
<Shinmera>
Sure. I don't blame anyone for using it, it's pretty nifty and easy to hook up.
<clothespin_>
Mirai had an interesting ui: HI: human interface
<clothespin_>
I think it was all lisp
<clothespin_>
I wanted to use it for this project but Mirai died
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<Shinmera>
Hopefully McCLIM will grow a GL Core backend at some point
<Shinmera>
So that there's an alternative out there.
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<clothespin_>
I'm not sure I'm sold on CLIM.
<clothespin_>
HI had it's roots in dynamic windows
<clothespin_>
I assume your UI toolkit is not McCLIM?
<Shinmera>
No.
<Shinmera>
Like most things I do it's from scratch.
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<Shinmera>
I hope to write some articles and maybe even a paper once things have crystallised a bit more.
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<jasom>
anyone know when SBCL won't open-code sb-rotate-byte:%rotate-byte? I'm rotating by a constant value and a hand-written rotate-byte is over an order-of-magnitude faster becuase it's making a function-call when I use sb-rotate-byte:rotate-byte
<Shinmera>
Probably a better question for #sbcl
<clothespin_>
What are you using for a backend?
<Shinmera>
Alloy is primarily a protocol, so it's backend agnostic.
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<clothespin_>
you don't have a test backend?
<Shinmera>
I'm mostly working on a GL one though since that's what's useful to me at the moment.
<Shinmera>
I have a GL and an SVG one.
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<clothespin_>
the latest release of 3d-matrices and 3d-vectors fixed some problems in the quicklisp version, suchas mlookat
<clothespin_>
now everything seems to be working sans a few compiler warnings
<clothespin_>
I am planning on making it compile seperate packages for single-float and double-float since I use both at the same time
<Shinmera>
Oh boy
<clothespin_>
and I'm considering making the memory be in the foreign heap for communication with C++
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<Shinmera>
On SBCL at least you should be able to just pin the matrix arrays and get a pointer while pinned.
<clothespin_>
yeah, i use that for vertex and index buffers
<clothespin_>
allegro cl has something similar, and i assume LW does too
<Shinmera>
probably. A lot of implementations do
<LiamH>
Take a look at static-vectors.
<clothespin_>
it would be cool if sbcl allowed you to stack allocate arrays and structs
<Shinmera>
LiamH: static-vectors are not so nice since they require manual deallocation.
<clothespin_>
I use finalizations
<LiamH>
Shinmera trivial-garbage helps with that
<Shinmera>
Not if the foreign memory might have pointers.
<Shinmera>
Which is, kinda the point
<clothespin_>
the structs I'm using are just coordinates and such which get copied around
<Shinmera>
static-vectors are also moot if the vector comes from or is shared with some native lisp library.
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<clothespin_>
stack allocated vectors would be nice so you don't fragment your foreign heap
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<Xach>
Do you think you might go to the SBCL20 get-together?
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<Shinmera>
I've been considering it a lot, but I don't know. Current university semester looks deadly busy, especially later in the year
<Shinmera>
I could maybe do a one-day trip, I don't know. Would have to check travel times and all.
<Xach>
I missed ELS so it would be wonderful to see my euro-pals again soon
<Shinmera>
You could also wait for ELS20 in Zürich :)
<Xach>
!!!
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<Xach>
I didn't know it had been announced!
<Shinmera>
It's not published yet but it was announced at the end of this year's
<Xach>
Cool, I will try to visit
<Shinmera>
Nice!
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<Xach>
I enjoyed my time in Zürich last year (3 minutes running from airport gate to airport gate for my ELS connection)
<Shinmera>
Hah
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<Shinmera>
I'll bother didier to check my els-web changes and maybe publish it if he thinks it's time.
<akoana>
Xach: will we be able to have a (ql:quickload "grüezi") then :)
<verisimilitude>
So you're using a C library for your CAD GUI, clothespin_?
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<clothespin_>
I'm using a C++ library, Opencascade
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<clothespin_>
and "Dear Imgui" also c++
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<fragamus>
where in the blue blazes is the source file containing the main for lisp.run in clisp
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