<< 08-12-2024 >>
02:38:34FromDiscord<tsoj> when using `--mm:none` how do I know if I accidentally use something from the stdlib which uses the GC? Do I have to just check for leaks using sanitizers, or is there a more direct way to know?
02:43:41FromDiscord<nervecenter> In reply to @tsoj "when using `--mm:none` how": If you don't get a response here, might also be a good question for #internals
02:44:04FromDiscord<ElegantBeef> Ah bridge fun
02:44:13FromDiscord<tsoj> no, i prefer chess
02:44:18FromDiscord<ElegantBeef> The compiler has a warning
02:44:26FromDiscord<Elegantbeef> The compiler has a warning
02:44:26FromDiscord<ElegantBeef> Stop using no gc though
02:44:26FromDiscord<Elegantbeef> But really stop using `none`
02:44:31FromDiscord<ElegantBeef> Ah there it is
02:45:27FromDiscord<tsoj> In reply to @elegantbeef "Stop using no gc": its for a challenge with some arbitrary size limits, so I will be writing unusual code :)
02:45:28FromDiscord<Elegantbeef> `Warning: 'add(a, "hmm")' uses GC'ed memory [GcMem]` so you can do `--warningAsError:GcMem: on` if you want
02:45:34FromDiscord<Elegantbeef> So what?
02:45:46FromDiscord<Elegantbeef> Arc is practically free and does not bloat the GC
02:45:55FromDiscord<Elegantbeef> bloat with the GC\
02:48:41FromDiscord<tsoj> it seems to crash when I enable arc with all the other flags I have set
02:48:58FromDiscord<Elegantbeef> A simple program that concatenates a string is 40 bytes larger when compiled with `-d:danger -d:lto --cc:clang --opt:size -d:strip -d:useMalloc` with arc enabled 😄
02:48:58FromDiscord<tsoj> i will check, could be of course that my code does something wrong
02:49:25FromDiscord<Elegantbeef> If it crashes with arc enabled you're likely doing some UB
02:49:58FromDiscord<Elegantbeef> Arc is likely modifying your stack which is showing an issue that you have in your logic
02:50:55FromDiscord<tsoj> oh, do closures rely on the GC?
02:51:01FromDiscord<Elegantbeef> Yes
02:51:11FromDiscord<Elegantbeef> Closures allocate their environment on the heap
02:51:42FromDiscord<tsoj> yeah that makes sense, haven't been thinking about that
02:51:54FromDiscord<Elegantbeef> They also can be cyclical
02:52:46FromDiscord<Elegantbeef> sent a code paste, see https://play.nim-lang.org/#pasty=QrkDryiA
02:53:05FromDiscord<Elegantbeef> Should be `proc(args: T){.nimcall.}`
02:53:29FromDiscord<Elegantbeef> Actually should be `var T` 😄
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03:01:06FromDiscord<tsoj> what the heck, now the binary size increases by 4000 bytes when using --mm:none instead of --mm:arc
03:01:51FromDiscord<Elegantbeef> None uses the old runtime iirc so it's not as efficient
03:03:13FromDiscord<nervecenter> In reply to @tsoj "what the heck, now": Also keep in mind the default for dynamic types is a hidden unique pointer, so the GC will only activate if you use an explicit `ref`. Not sure if LTO cuts out the GC routines.
03:05:12FromDiscord<Elegantbeef> Well that's not exactly true since we're talking about arc 😄
03:05:18FromDiscord<Elegantbeef> The GC is arc
03:05:46FromDiscord<Elegantbeef> It inserts destructor calls so there is no "activate"
03:08:53FromDiscord<tsoj> sent a code paste, see https://play.nim-lang.org/#pasty=Dpneyrbw
03:09:05FromDiscord<Elegantbeef> No clue
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07:47:55FromDiscord<TFed> How to sort sequence? and which lib i need to import
07:48:13FromDiscord<TFed> to sort from small to the biggest
07:48:28FromDiscord<TFed> to sort from the smallest one to the biggest
08:03:58FromDiscord<Elegantbeef> `std/algorithm`
08:04:52FromDiscord<TFed> sent a code paste, see https://play.nim-lang.org/#pasty=kouLpurR
08:05:41FromDiscord<Elegantbeef> That's a hell of an error
08:05:43FromDiscord<TFed> it says that seq isn't an openArray
08:06:42FromDiscord<johnsley> sent a long message, see https://pasty.ee/NZlmUQnd
08:06:55FromDiscord<Elegantbeef> It's not a openarray it converts to one
08:06:57FromDiscord<TFed> .....
08:07:35FromDiscord<TFed> sent a code paste, see https://play.nim-lang.org/#pasty=jlujVvwK
08:07:46FromDiscord<TFed> sent a code paste, see https://play.nim-lang.org/#pasty=KjOOJASD
08:08:11FromDiscord<Elegantbeef> stop converting it
08:09:50FromDiscord<TFed> sent a code paste, see https://play.nim-lang.org/#pasty=SzfMoZRu
08:10:05FromDiscord<Elegantbeef> `'getFirst(list)' is immutable, not 'var'`
08:10:10FromDiscord<Elegantbeef> you want `sorted`
08:11:25FromDiscord<TFed> finally works, thanks
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09:13:49FromDiscord<k0ts> https://nim-lang.org/docs/theindex.html#sort
09:13:52FromDiscord<k0ts> https://nim-lang.org/docs/manual.html#types-open-arrays
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15:53:04FromDiscord<nervecenter> In reply to @Elegantbeef "It inserts destructor calls": I guess I need to get clarification from Araq, are destructors always managed by the GC? Or can they be done without invoking it?
15:53:44FromDiscord<nervecenter> If something is destroyed by leaving scope, I guess...maybe it needs to run to do compaction and avoid fragmentation?
16:11:35FromDiscord<wug.s> is there some kind of defaultdict thing in nim
16:11:36FromDiscord<wug.s> like in python?
16:11:45FromDiscord<wug.s> that seems really useful idk
16:19:02FromDiscord<bostonboston> In reply to @wug.s "is there some kind": `getOrDefault()`
16:19:30FromDiscord<bostonboston> https://nim-lang.org/docs/tables.html#getOrDefault,Table[A,B],A
16:33:25FromDiscord<0ffh> If you want to avoid using getOrDefault everywhere in your code, you can always just write a thing wrapper for the standard dict.
16:33:39FromDiscord<0ffh> If you want to avoid using getOrDefault everywhere in your code, you can always just write a thin wrapper for the standard dict.
16:34:21FromDiscord<0ffh> Or, rather, table.
16:44:23FromDiscord<wug.s> In reply to @0ffh "If you want to": wdym?
16:44:25FromDiscord<wug.s> sorry im like
16:44:28FromDiscord<wug.s> super super new to nim
16:44:31FromDiscord<wug.s> im trying to learn it via the AOC
16:56:47FromDiscord<requiresupport> have a windows api function that returns a list of pointers to an object, how would i convert that pointer value to the list of `ptr object`
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17:52:37FromDiscord<bostonboston> sent a long message, see https://pasty.ee/dtaSdrkw
17:54:36FromDiscord<bostonboston> So you could make your own `[]` that uses mixin to find your own defined default, which I would call the fastest but least robust way to do it.↵↵Alternatively you could make your own object that contains a table field and a default field that you write all your own operators for. I'm sure someone else has better solutions than mine
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21:51:21FromDiscord<bostonboston> I got home and tried to make a quick example but I dont know how to program and it doesnt work↵↵https://play.nim-lang.org/#pasty=WhzYYusD
21:53:31FromDiscord<Elegantbeef> The issue is the `lent` it's not capable of borrowing
21:55:28FromDiscord<Elegantbeef> https://play.nim-lang.org/#pasty=LhivQNaC works around that in a odd way
21:56:25FromDiscord<bostonboston> https://tenor.com/view/why-didnt-i-think-of-that-gif-27711265
21:56:41FromDiscord<bostonboston> Thank you
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