<< 21-10-2015 >>
00:00:38Araq case e.kind
00:00:39Araq of WindowEvent:
00:00:41Araq let w = e.window
00:00:42Araq if w.event == WindowEvent_Resized:
00:00:44Araq screenW = w.data1
00:00:45Araq screenH = w.data2
00:00:47Araqit's a bit messy.
00:01:11desophoshmm
00:01:13Araqthere are accessor procs like 'window', 'button'
00:01:22Araq'wheel'
00:01:24desophosyeah i thought evConv had something to do with it
00:01:29Araqthat do the casting for you.
00:01:35desophoscouldn't quite figure it out, i think i understand now
00:01:51Araqrun doc2 over the file to see the expansions
00:03:00desophosooh built-in doc tools, shiny
00:05:43desophos`nim doc2 ~/.nimble/pkgs/sdl2-1.1/sdl2` -> "Error: unhandled exception: lib/system.nim(24, 4) Error: cannot open '../doc/exception_hierarchy_fragment.txt' [ERecoverableError]" :(
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00:11:16Araqdesophos: thanks for reporting, I'm sick of this, wait a sec
00:11:50desophosi'm using 0.11.2 installed with `brew install nim`
00:12:07desophosi assumed it was something i did wrong, not a bug haha
00:12:27Araqit's not a bug
00:12:42desophosoh good
00:12:49Araqbut packagers are too stupid, so I remove it anway.
00:13:23AraqI tell people not to spread stuff over the unix "hierarchy", but nobody would listen
00:14:04Araqso *shrug* I will remove useful things now to please Unix.
00:15:22desophosaww
00:15:27desophoswell at least it wasn't my fault c:
00:19:15NimBotnim-lang/Nim devel 3d512a7 Araq [+0 ±2 -0]: documentation improvements; system.nim docs adapted to unix's braindead idea of how software should be packaged which didn't work in 1970 and surprise doesn't work in 2015 either
00:19:23desophoshaha
00:20:53reactormonkdesophos, following conventions isn't a strong suit either...
00:21:28desophosreactormonk, re: what?
00:21:51reactormonkdesophos, ah, just the good old subject line in git commits max. 80 chars ;-)
00:21:57desophosoh haha
00:22:45Araqright. because word wrap is evil.
00:22:53Araqbecause of reasons.
00:24:05desophosoh, i think i finally understand the evConv template: it creates an accessor proc (like you said) that casts the Event to another Event type
00:25:02desophosalso i think i found a typo: `evConv(EvKeyboard, key, KeyboardEventPtr, {KeyDown, KeyUP})` shouldn't that be `KeyUp`?
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00:25:36Araqyeah but Nim doesn't care (partial case sensitivity)
00:25:48desophosoh okay
00:25:56desophosi remember that
00:26:41Araqturns out the exception hierarchy was also documented in the manual. :-)
00:26:47Araqso we didn't lose anything.
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02:53:33desophoswhat's the best way to add references to existing objects to a sequence?
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03:15:24desophosthe explanations i can find don't talk about how to create a reference to an object returned by a constructor proc
03:15:43desophosas opposed to direct invocation of the type
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03:23:55desophosi guess i just don't understand ref objectas
03:23:58desophos*objects
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03:26:47ephjadesophos: you would do it in the same way, as a constructor proc would just be a wrapper around the type constructor
03:27:35desophosephja, then why doesn't `let foo: ref Bar = new bar(args)` work if Bar isn't declared as a ref object?
03:28:49desophosi'm trying to figure out how to create object references
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03:29:10desophosoh, `bar` there is the wrapper for `Bar`
03:29:31ephjaright, so 'new' should appear in 'bar' then
03:29:52desophosoh, hmm
03:29:57desophosoh okay
03:30:49ephjaFoo(...) is a shortcut for that if Foo is defined as a ref object, IIRC
03:31:49desophosso do i have to duplicate all my code in my non-ref initializer?
03:32:16desophosseems like i'd have to duplicate all my initialization code
03:32:34desophosoh... templates maybe? haven't used those yet
03:33:08desophosof course by templates i mean generics
03:33:28desophoshmm
03:33:57desophosi guess not
03:36:10desophosi can't just create a reference to an existing object?
03:36:19desophosi guess addr would do that?
03:39:41desophosalso i don't understand why variables declared with `let` aren't l-values
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03:58:41desophosephja, where do i need to put the `new`?
03:59:42desophosoh wait
03:59:50desophosare you sure about that shortcut?
04:04:33desophosephja, you are right about the shortcut
04:06:14desophosi'd still like to know how to create a reference to an existing object though
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04:21:18ephjait's documented here http://nim-lang.org/docs/system.html#new,ref.T
04:21:22ephjadesophos: "a = b" basically
04:22:07ephjanow you have two references
04:22:45desophosephja, i mean a reference to a non-ref object
04:24:37ephjadesophos: http://nim-lang.org/docs/system.html#addr,T
04:25:07ephjahaving only refs might be preferable, and if it's a parameter, annotate it with 'var'
04:26:14desophosi guess having all refs is preferable to using ptrs when i need references?
04:26:44desophosbecause i can just deref a ref when i need to i guess
04:28:00ephjayes, unless you have specific requirements
04:28:50desophoshmm, alright
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11:01:12yglukhovDoes nimble support nims already?
11:05:33dom96yglukhov: Haven't had the time to properly review Araq's PR yet.
11:05:43dom96So not yet.
11:06:10yglukhovok
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11:59:31ArrrrFrom the point of view of the gc, does it make any difference to collect 10 bytes or 10kb ?
11:59:34Arrrrin time
12:00:03Arrrra reference pointing to these contigious data
12:00:32reactormonkArrrr, possibly, cache lines.
12:01:10ArrrrWhy? does it have to clean every byte?
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15:08:01yglukhovHey guys, check out new coverage lib for Nim ;) https://coveralls.io/builds/3907528/source?filename=tests%2Ftest.nim
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15:22:12federico3yglukhov: how do you implemented coverage in Nim?
15:22:59yglukhovthere's a hint in the README.md, that says: inspired by Andreas' talk at OSCON ;)
15:23:53yglukhovhttps://github.com/yglukhov/coverage
15:25:48yglukhovAraq's original example: https://github.com/Araq/oscon2015/blob/master/2_meta.rst
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15:39:51federico3yglukhov: aha, I was expecting something like that - hopefully I will not have side effects apart from performance
15:41:15federico3very nice work
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15:45:45desophoswhy are bindings created by `let` statements not lvalues?
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15:50:16yglukhovfederico3: actually performance impact is even less than nim line/stack tracking. 1 bounds check + 1 increment per line. Could not find a way to disable bounds check :(
15:50:50yglukhovdesophos: let in nim is like const in C
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15:56:53desophosbut aren't consts just unmodifiable?
15:56:57desophosi don't really know C
15:57:09desophosi don't know the exact behavior of const
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15:57:51desophosit seems that let does more than const; not only does it create an unmodifiable binding, it also doesn't even give that binding an address somehow
15:58:12desophosit seems to behave like an expression substitution
15:59:44yglukhovdesophos: internally let is like var, except you can't modify it. addr of let is considered to be a potential modification. if you really want an addr and know what you're doing, use unsafeAddr
16:02:52desophosoh okay. the compiler tells me "expression has no address" when i try to take addr(someLetVar). that seems misleading
16:04:24yglukhovwell, "expression has no address" might not be the best explanation of whats going on. also unsafeAddr is introduced recently in Nim. pleviously there was no way of taking addr of let.
16:05:28desophosah okay. i was under the impression that bindings created by let were somehow expressions (rvalues)
16:05:40desophosthanks for the clarification
16:06:55yglukhovanytime
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16:35:56desophosis there any way to get the directory of the running executable? os.getCurrentDir (http://nim-lang.org/docs/os.html#getCurrentDir) just returns the directory from which the executable is invoked
16:36:42desophoswhich on OS X is apparently always home?
16:37:16desophoswell, i mean if i go and click on it instead of directly invoking it from an open terminal
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16:55:35reactormonkdarenthis, getAppDir?
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19:35:54desophoswill https://github.com/fowlmouth/nimrod-chipmunk be updated to chipmunk 7? looks like it's no longer actively maintained
19:36:22desophosoh https://github.com/fowlmouth/nimrod-chipmunk/issues/1
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19:45:49dom96Can anybody here compare Nim to Julia? https://www.reddit.com/r/programming/comments/3pns1z/what_is_nim_and_why_it_matters_for_scientific/
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20:59:07desophosi wish Nim had a bigger community :( needs more library & wrapper support
20:59:23desophosi know i know, write my own
21:01:36aaed_desophos, what libraries/wrappers do you have in mind? i am looking for a way to contribute
21:02:37desophosaaed_: currently i'd like more game dev support, especially since Araq has said game dev is a target domain for Nim
21:02:57desophose.g. graphics, physics
21:03:02desophosphysics in particular
21:03:14desophosthere are a few graphics libs but only SDL2 seems to be actively maintained
21:04:06desophoshttps://github.com/fowlmouth/nimrod-chipmunk appears to be the only Nim physics lib
21:04:30desophos"Chipmunk 6.1.* bindings for Nimrod 0.9.0"... Chipmunk is at 7.0.x and Nim is at 0.11.3...
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21:06:05desophosupdating that library would be a great place to start imo
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21:06:59desophostbh i doubt that wrapper still works
21:08:34desophosalso apparently it only supports Linux lol
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21:21:14dom96desophos: Same. You can help make it bigger :)
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21:55:34desophosdom96: i can try :)
21:55:52desophosi'm totally willing to proselytize
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