<< 27-10-2015 >>
00:04:30desophosi don't understand this error :( https://bpaste.net/show/21ac070dbf51
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00:44:36makoLineWell, it's true that result isn't initialized https://github.com/nim-lang/Nim/blob/bb7604c06fb2adc6999d47fdfcbf9cf2979bef9e/lib/pure/collections/queues.nim#L26
00:45:03makoLineRight?... (I'm new)
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00:50:30desophosmakoLine, why would it not be initialized there?
00:51:38desophosresult.mask can be assigned to because result is of type Queue[T]
00:51:45desophosright?
00:52:09desophoshmm, is it because of the assert that it doesn't guarantee initialization?
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00:54:34desophosi assume the fields in result that aren't assigned to use their default initializers
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01:01:04makoLineIt's been that way since 2011 so I assume I just don't know how result works.
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01:43:24desophosidk, maybe a recent compiler change broke it
01:46:28desophosmore likely i'm just not using it right
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02:20:03desophosi'm also getting "SIGSEGV: Illegal storage access. (Attempt to read from nil?)" on the line with `eventHandler()`
02:23:47desophossolution: don't use a Queue :p
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17:00:29CcxCZHello. I'm looking into asyncdispatch and I can't tell if callback is called in the presence of error - or if there are separate means for that (like Twisted's errback)
17:02:21Arrrrdom96, a question for you
17:02:48CcxCZI guess since it passes the Future it's like .addBoth() and one determines in the callback wheter it's failed or succeeded
17:12:27desophosbtw my questions still stand; still haven't been able to figure them out
17:13:01CcxCZAh, and trivial cases will just read(future), re-raising the error
17:16:15Arrrrwhat is your question desophos ?
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17:18:56desophosArrrr: one is about the Nim SDL2 wrapper, one is about the stdlib Queue, and one is about my own code that i think has to do with ref objects
17:19:26Arrrri have no experience with sdl2, but maybe i can answer you
17:20:41desophoswell i'm confused about how to use sdl2.addEventWatch
17:21:26desophoshttps://github.com/nim-lang/sdl2/blob/master/src/sdl2.nim#L1425
17:21:50desophosi don't know how to construct an EventFilter proc
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17:22:25desophosand i don't know how to get a `pointer`; is that just an addr or is it something else? i read through the relevant sections in the manual but i still don't understand either of these problems
17:24:28desophosthe EventFilter declaration is at https://github.com/nim-lang/sdl2/blob/master/src/sdl2.nim#L1425
17:26:59Arrrromg. Is for a game?=
17:27:06desophosyeah
17:27:47ArrrrWell, i'll try to understand it, but i think there is a wrapper for sfml.
17:28:04ArrrrAnd another for glfw
17:28:46desophosnever saw the glfw wrapper; i'd rather use sfml but the wrapper doesn't look so good
17:29:50Arrrrhttps://github.com/exetoc/nim-glfw
17:32:12desophoswhy is glfw preferable to sdl2?
17:32:31desophossdl2 isn't so bad, i've just been wrapping the low level stuff
17:33:10Arrrri dont know, i havent used before sdl2, but glfw gives you the basic stuff, and i prefer it that way
17:33:55ArrrrThis is an example for getting a pointer http://ideone.com/R1ioir
17:35:36ArrrrEventFilter is just a proc, so you only have to declare one like https://github.com/nim-lang/sdl2/blob/270eb471e5b4c16de8167a7a0cb35ef45c97c4f1/src/sdl2.nim#L208
17:36:16desophoswhat if type A were an object instead of a ref object? what type would addr(a) be then?
17:36:50ArrrrWell, i think it could work, but addr would point to the stack
17:36:50desophosand okay, so the proc just has to have the same declaration
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17:39:38desophosokay, thanks, i'll try out those solutions
17:40:23desophosbut i have another problem in a module that has to compile before the one that had those problems
17:40:37desophoswhat's wrong with this? https://bpaste.net/show/21ac070dbf51
17:40:59desophosif i change EventHandler to a non-ref object, i get "invalid type: EventHandler"
17:41:35ArrrrWell, in line 13 you cannot declare a variable like that, use 'var gEvent...' or 'let gEvent...'
17:41:46desophosit can't be a const?
17:42:03desophosoh sorry. in my actual code it's in a const block
17:42:21desophoswow
17:42:21Arrrror const, except if the variable is a ref
17:42:24Arrrri believe
17:42:37desophosyeah being a const might be a problem... haha
17:43:17desophosyeah it compiles when i change it to var, which it should be anyway
17:43:20desophosthanks!
17:43:47ArrrrAnything else?
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17:44:08desophosthere's the issue with Queue
17:44:26desophosthe second error line in the paste
17:44:42desophoshttps://github.com/nim-lang/Nim/blob/master/lib/pure/collections/queues.nim#L26
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17:45:47desophosi don't *really* need a Queue so i used a seq and just implemented a hacky "peek" proc
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17:46:19desophosactually it's less hacky haha
17:48:17Arrrrthe warning you mean=
17:48:19Arrrr?
17:48:31desophosyeah the warning
17:48:51desophosit's not a real issue but it's concerning
17:49:53Arrrrwtf who knows, but with seq you can pop
17:50:32desophosyeah that's what i'm doing
17:50:53desophosadding to front using `event & events`
17:51:09desophosand popping off end
17:51:24desophosprobably less efficient than the actual Queue implementation but that's not a concern yet
17:51:35ArrrrAlso you can insert http://nim-lang.org/docs/system.html#insert,seq[T],T
17:51:48desophosoh nice
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18:15:46desophoshow do i initialize an array indexed by an enum? i know how to declare it but i can't figure out how to give it a default value when it's a parameter
18:17:41desophosits type is `array[PhysicsEvent, seq[(PhysicsBody, PhysicsBody) -> void]]` where PhysicsEvent is an enum and PhysicsBody is an object
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18:19:48desophoshmm, it compiles if i define a proc that inits it and call that proc for the default value :p
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18:36:35desophosis it possible to define object variants that define the same field as different types?
18:36:46desophosi get a redefinition error
18:37:42desophosi want a polymorphic field
18:41:21Arrrrwhat?
18:41:43Arrrrif you mean having the same name, it is not possible
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18:45:00desophosokay
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18:48:24VarriountAraq: I have the two installers built from the buildbots. You want it?
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19:27:11avsej`undeclared identifier: 'map'`
19:27:23avsejdid someone change map()?
19:28:04avsejhttps://gist.github.com/avsej/0f565ce4cfd62a6ba092
19:29:39avsejah, sequtils. sorry
19:30:47AraqVarriount: well ok, I can test these, but I'm sure you are aware we need to update the version number first.
19:35:13Arrrrnow is map and apply
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20:58:30desophoscan i just say that "expression _____ cannot be called" is an extremely unhelpful error
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20:59:26Araqvar foo = 89
20:59:34Araqfoo() # expression cannot be called
20:59:48Araqwhat else can you say for this snippet?
20:59:59desophosyes but when the expression is a proc it gets more complicated
21:00:17desophosi wonder "cannot be called because...? WHY"
21:00:55desophosin this case it was because i was passing a type to a constructor
21:01:01desophoswhere it wanted an object
21:01:08desophosbut it didn't tell me "type mismatch"
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21:35:04desophosomg my project finally compiles after days of not compiling :_D
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22:23:30dom96http://nim-lang.org/news.html#Z2015-10-27-version-0-12-0-released :)
22:24:27desophos:O :O :O
22:25:19desophoscongratulations!
22:25:52dom96desophos: thanks!
22:31:05Araqsee? Oscon works.
22:31:18desophosyay tuple unpacking!
22:39:43Araqyay a tremendous amount of bugfixes!
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23:21:16VarriountYay!
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