<< 17-07-2016 >>
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00:06:52kierephja: if you haven't found a solution already, @'#endif' ought to do the trick
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00:13:39ephjakier: yep, figured it out
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00:59:54Demoshow likely is a dll built using nimrtl to work?
01:02:46andrewo91Araq: can I just define my own memstr etc. implementation and string.h? do I need to use patchFile for that as well?
01:07:35Demoshuh
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01:25:07Demosnow can I use the GC in a situation where I have a callback that can get called from many different threads
01:25:22DemosI don't want to share memory between the threads, I just want to use strings and such in my functions
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01:32:33Demoshuh triggering a full collection before returning from my callback function seems to do the trick
01:32:41Demosnot ideal though *shrug*
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03:13:38ftsfcan I import the nim compiler and use it in my nim app to compile nim code and then load it as a shared object and run it?
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04:43:22mccI'm trying to create importc's for importing stuff into Nim, and the original symbols on the other side begin with a _ (like, _default). This is not allowed in Nim. What is the most sensible way to transliterate this into Nim?
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05:11:02reactormonkmcc, importc takes a string parameter, use it. proc someName {.importc: "_someName".}
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07:16:07Araqmcc: leave out the _ ?
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13:51:36minuswhat's the nim equivalent for this C: float vertices[] = {1,2,3,4,…};?
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13:53:16cheatfatevertices = [1'f, 2'f, 3'f, 4'f]
13:53:30cheatfateor vertices = [1.0, 2.0, 3.0, 4.0]
13:54:02minuswhat's the difference between @[] and []?
13:54:14minusmeh, doesn't like the [ being on its own line
13:54:46cheatfateminus, http://nim-lang.org/docs/manual.html#types-array-and-sequence-types
13:55:56minusi see
13:56:11minusany chance of multi-lining an array intialization?
13:59:03Araqwhat are you even talking about
13:59:06Araqconst
13:59:06Araq foo = [
13:59:06Araq [1, 2],
13:59:08Araq [5, 6],
13:59:10Araq [7, 8]
13:59:12Araq ]
13:59:14Araqworks perfectly fine
14:00:39minushttps://sr.ht/ZvA-.txt
14:01:11minusnim is nope'ing me hard
14:04:17minusoh damn, the comments
14:04:42minusthat was stupid
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14:12:55minushow do i get a pointer to the array's data?
14:15:06minusah, addr didn't work because it was a const
14:24:12minusthis is madness: attribs_in_color.glVertexAttribPointer(3, cGL_FLOAT, false, GLsizei(6*sizeof(float)), cast[pointer](3*sizeof(float)))
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14:31:30EastByteminus: `cast[pointer](3*sizeof(float))` this looks scary
14:31:59minusit's the offset in the data, the API wants it as void*
14:32:44EastByteah I see
14:32:59minusanother funny thing in the opengl api is glGetAttribLocation and glVertexAttribPointer. former returns a GLint, latter needs that value as GLuint
14:33:27EastByteI would probably write wrapper procs to make it nicer
14:33:34minusi have now entered the most annoying phase when dealing with opengl: it runs, but i see nothing
14:33:35ephjahttp://nim-lang.org/docs/manual.html#types-pre-defined-floating-point-types
14:33:56ephjafloat is basically float64 (or C's double) now
14:34:18minusoh
14:34:56EastByteI guess cfloat should be used?
14:35:31minusGLfloat
14:35:53ephjaif you want. "cfloat = float32"
14:36:41minusyeah, GLfloat is float32 as well, and makes more sense here
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14:37:45AraqOpenGL predates strict static typing, unfortunately.
14:41:07Araqon the other hand, it wasn't designed by a Unix neckbeard, so you get glGetAttribLocation() rather than f=fopen("/dev/opengl"); write(f, "gtttrblctn")
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14:42:51ephjanever gets old :p
14:43:44ephjadoes c2nim not process opaque pointers?
14:44:23Araqit does.
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14:49:05minushow do i best get my array typed as GLfloat? ·var·vertices:·array[24,·GLfloat]·= [ -0.5, ...] complains about a type mismatch
14:49:28Araqminus: convert the first array entry to GLfloat
14:49:33Araqthe others are then inferred
14:49:46ephjaAraq: you're right. these weren't pointers though, but plain structs
14:50:13minusdoesn't look very elegant but it works
14:50:29ephjaand then it's referenced as Foo*
14:50:44minusthanks
14:51:37SalewskiI still wonder if "file.isNil" is the same as "file != nil" ? Was not able to find explanation, sorry.
14:52:08ephjaSalewski: did you ever have this problem? are all opaque structures defined as "typedef Foo* Foo" rather than "typedef Foo Foo"?
14:52:18ephjabut this too can be automated with pegs
14:53:30ephjathese are the ugliest parts: content.rep(r"'when not defined(_WIN32) and'" & r"@'when defined(DLL) and defined(_GLFW_BUILD_DLL):'")
14:54:21Salewskiephja: Can not really remember, there were so many problems... Most fixed by scripts I wrote two years ago.
14:54:52minusnot surprising that nothing shows if the view matrix' top half is all NaNs
14:55:52ephjait's always fun to debug these issues
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14:56:37ephjathe spec is kind of half-assed when it comes to specifying types, but I guess vulkan will be a little more pleasant to use
14:57:42Salewskiephja: are you still working on gstreamer? I looked at the API yesterday, seems to be large unfortunately. And not close related to gtk/glib, so code structure may be different, with new problems.
15:03:03ephjayes probably. no I'm not working on it atm
15:04:20SalewskiisNil: ## Fast check whether `x` is nil. This is sometimes more efficient than ## ``== nil``.
15:04:44SalewskiSorry, had not found that explanation some months ago...
15:05:09ephjaonly for closures, right? but I prefer to use it in any case
15:05:51SalewskiAnd do we write "if not file.isNil" or is there somethink like "file.isNotNil" ?
15:06:02minusyay it renders
15:07:18SalewskiI would still like the unless from Ruby, "unless file.isNil"
15:07:35ephjaminus: great
15:10:33minuslast thing that got me was arr.len instead of arr.sizeof; an abstraction would really help there
15:11:31ephjaa proc calculating len * sizeof?
15:12:13AraqSalewski: isNil is the same as == nil except for seqs where == causes a generic instantion
15:12:59ephjaI dunno what I heard about closures then
15:13:07minusnah, my vertices array; i used glBufferData with the len of the vertices array instead of the size in bytes, so i ended up getting only ¼th of the data buffered
15:16:09SalewskiAraq: Thanks. And we write "if not file.isNil:" ?
15:17:36Araqyeah, pretty much
15:17:56SalewskiOK.
15:20:25SalewskiBye...
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15:22:15minusif anyone wants to take a look https://git.mnus.de/minus/nim-sdl2-opengl3/blob/master/main.nim [cc def-]
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15:24:38ephja"typedef struct GLFWcursor* GLFWcursor" -> "illegal recursion", "typedef struct GLFWcursor* GLFWcursor2;" -> "undeclared identifier: 'GLFWcursor'"
15:24:41ephjadifficult problem to solve?
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15:26:43Araqtype IpromiseToLearnNimSomeday = ptr object # done.
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15:30:18ephjawell I'm using c2nim but PEG it is for these symbols
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15:48:17def-minus: opengl3, cool
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15:58:37ephjableeding edge :p
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18:15:39mccWhen writing bindings from Nim to another language, how are constructors typically handled?
18:15:59mccI think I can create an equivalent of "new Class()" using importcpp. But what would be the most sensible thing to name it?
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18:16:44mccthe convention i've seen so far in nim code is that when creating a "constructor function" for SomeClass, it's typically named "someClass". but that's not really safe for a binding script (i'm writing one from js->nim) since i can't guarantee types will have uppercase names.
18:16:54mccshould i just name it newSomeClass?
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18:56:16Araqmcc: newSomeClass is it
18:56:25Araqor for value types: initSomeClass
18:57:08mccthx
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21:25:41mccMy TypeScript -> Nim binding script now works with variables, functions, classes and objects https://pbs.twimg.com/media/CnmMNN5WAAA4J9Q.jpg
21:26:10mccCan't do constructors, enums or the standard library yet
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21:41:51Araqmcc: nice! :-)
21:41:58Araqhow do you parse typescript? pegs?
21:42:24mccno, typescript exposes a compiler API, i just pull in typescript from npm and use it as a module
21:42:40Araqsmart
21:42:50mccit's a little awkward because the typescript compiler API is technically intended for syntax highlighters in editors
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21:44:16mccthey actually have something called "tsserver" which is a process that runs standalone and you can query it over a socket... it's more limited than the node_modules version but if it were more complete it would be in principle possible to query it from nim
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