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| 00:03:56 | shashlick | @zacharycarter: send me what you have so far, I'll work on it later tonight and post it |
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| 00:18:53 | FromGitter | <zacharycarter> shashlick: I don't really have anything yet to share :/ I just kind of played around with nimgen and then dropped it - wasn't planning on starting on this tonight |
| 00:18:58 | FromGitter | <zacharycarter> working on some game engine code atm |
| 00:22:13 | noonien | hello folks |
| 00:22:20 | FromGitter | <zacharycarter> hi |
| 00:23:02 | noonien | i've got a C sdk for a microcontroller for which i'm trying to write nim code for. can i use the structs/globals defined in the sdk headers/code inside nim, without having to transform all the code to nim? |
| 00:23:13 | FromGitter | <zacharycarter> use c2nim |
| 00:23:14 | FromGitter | <zacharycarter> or nimgen |
| 00:23:38 | FromGitter | <zacharycarter> you need nim declarations which match the C declarations - so short answer is no you cannot |
| 00:23:55 | FromGitter | <zacharycarter> but that's why these tools exist - to alleviate the pain in generating all that glue code |
| 00:24:11 | noonien | i see |
| 00:24:56 | FromGitter | <zacharycarter> protip: run all your C headers through GCC preprocessor before c2niming |
| 00:25:13 | FromGitter | <zacharycarter> will help resolve preprocessor related code, and make c2niming easier |
| 00:25:18 | noonien | well, the sdk is a clusterf**k, i wouldn't even rewrite the thing by hand, i wouldn't trust a generator to do a good job |
| 00:25:39 | FromGitter | <zacharycarter> so why bind to it if it's a POS library? |
| 00:26:22 | shashlick | @zacharycarter I'll check it out tonight and share what I come up with |
| 00:26:27 | noonien | i have no choice, it's the only sdk available for the MCU i'm using, writing a new one means reading the entire MCU datasheet, which is several hundred pages long |
| 00:26:46 | FromGitter | <zacharycarter> gotcha |
| 00:27:08 | shashlick | Nimgen does that preprocessor trick |
| 00:27:21 | FromGitter | <zacharycarter> this is kinda cool - |
| 00:27:23 | noonien | i'll probably abstract everything I needd from the MCU as C code and just use that |
| 00:27:31 | shashlick | Noonien: which lib is this |
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| 00:28:09 | noonien | the sdk for the nrf51288, sec, i'll find a link if you're curious |
| 00:28:43 | FromGitter | <zacharycarter> ```code paste, see link``` [https://gitter.im/nim-lang/Nim?at=5aa326ba6fba1a703aebcfd9] |
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| 00:29:01 | noonien | https://developer.nordicsemi.com/nRF5_SDK/nRF51_SDK_v6.x.x/nrf51_sdk_v6_1_0_b2ec2e6.zip |
| 00:29:43 | FromGitter | <zacharycarter> so I can declare nimscript APIs inside nim modules |
| 00:30:10 | FromGitter | <zacharycarter> with a simple macro |
| 00:30:23 | noonien | the sdk is written so that it works with multiple compilers, MCUs and boards. the selection is done via defines |
| 00:30:33 | FromGitter | <zacharycarter> I can even assign values to Nim variables with Nimscript results |
| 00:31:08 | noonien | it has asm code, and probably compiler specific tricks to access the CPU since it's basically a hardware abstraction layer |
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| 00:31:55 | noonien | i can't say i trust an auto generator to produce nim code that exactly matches the required effects of setting certain registers or cpu states |
| 00:32:04 | noonien | i don't even know them myself tbh |
| 00:32:45 | FromGitter | <zacharycarter> it's not just a one and done process |
| 00:32:58 | FromGitter | <zacharycarter> generally you need to generate bindings in several steps through trial and error |
| 00:33:13 | FromGitter | <zacharycarter> but you're correct - in most cases code generated by c2nim will need manual tweaking |
| 00:33:35 | FromGitter | <zacharycarter> I think the point of nimgen is to alleviate some of that - but neither solution is perfect |
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| 00:33:58 | noonien | yeah, that wouldn't have been a problem if it wasnt driver code |
| 00:34:42 | noonien | would have been awesome to just use the types declared in the C files |
| 00:34:53 | noonien | hmm, can I generate C code from within nim? |
| 00:35:13 | noonien | sorry, i mean write C code from within nim |
| 00:36:56 | FromGitter | <zacharycarter> yes |
| 00:36:58 | FromGitter | <zacharycarter> emit pragma |
| 00:37:37 | noonien | Oh, GREAT! |
| 00:45:09 | ieatnerds | Araq, just getting to looking at cpuload, but this this is definitely going to help me |
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| 00:50:30 | ieatnerds | only problem with /proc/loadavg is that its averaged from 1, 5, and 10 minutes, whereas using two readings from /proc/stat can give me an average from as little as 1 second. |
| 01:11:05 | Araq | noonien, the more you know Nim and how it maps to C, the less you need .emit |
| 01:11:21 | Araq | but .emit makes for an easy start |
| 01:11:49 | noonien | Yup, the only reason i need emit atm is to not have to convert all the existing C code to nim |
| 01:13:07 | shashlick | noonien: what compiler are you targeting, OS? |
| 01:13:21 | noonien | arm-none-eabi-gcc |
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| 01:28:02 | FromGitter | <samdmarshall> @dom96 I feel like i'm missing something obvious but I don't see any way to get the browser agent of a request from within jester. is that possible currently or would I need to make a PR on jester? |
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| 02:40:37 | shashlick | @samdmarshall: looks like the request object has headers in it |
| 02:40:44 | shashlick | you could look for User-Agent in that |
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| 09:03:47 | user11101 | Is it possible to implement a concept of a string type? For example, a string can be Numeric iff certain condition is met. |
| 09:05:21 | Araq | probably not if you mean that the string consists of \d+ |
| 09:05:21 | user11101 | Numeric could be a concept |
| 09:05:46 | Araq | no, forget what I said |
| 09:05:53 | Araq | you can do |
| 09:06:02 | Araq | type Numeric = distinct string |
| 09:06:16 | user11101 | aha! thanks |
| 09:06:30 | Araq | proc isNumeric(s: string): bool = s.allCharsInSet({'0'..'9'}) |
| 09:06:50 | Araq | template toNumeric(s: string): Numeric = Numeric(s) |
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| 12:46:49 | FromGitter | <sivakon> Can I extend Nimscript to work with custom library? Is there a guide? |
| 12:47:38 | FromGitter | <zacharycarter> I just posted a macro which does exactly that last night |
| 12:47:50 | FromGitter | <zacharycarter> well - it doesn't work with a custom library |
| 12:47:57 | FromGitter | <zacharycarter> but it does register additional callbacks with the VM through a macro |
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| 13:58:36 | dom96 | So... `echo(@[data])` is better than `echo(data.repr)` right now |
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| 14:24:47 | FromGitter | <gogolxdong> How to achieve this ? |
| 14:24:52 | FromGitter | <gogolxdong> ```code paste, see link``` [https://gitter.im/nim-lang/Nim?at=5aa3eab353c1dbb743c72cbd] |
| 14:31:20 | dom96 | if you need to change to seq[byte] then you're probably doing something wrong |
| 14:31:32 | dom96 | You should just use the string as a list of bytes |
| 14:35:40 | FromGitter | <gogolxdong> how |
| 14:36:55 | FromGitter | <gogolxdong> and does it distinguish between char and byte when sending on SOCK_RAW on wire? |
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| 14:38:01 | FromGitter | <gogolxdong> @string produce seq[char] |
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| 14:38:45 | Yardanico | char IS byte |
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| 14:39:03 | Yardanico | well, I mean, it can be used as a byte |
| 14:41:22 | FromGitter | <gogolxdong> which means this is right? ⏎ ⏎ ```code paste, see link``` [https://gitter.im/nim-lang/Nim?at=5aa3ee926fba1a703aeea301] |
| 14:41:40 | FromGitter | <gogolxdong> when sending on SOCK_RAW on wire |
| 14:42:00 | Yardanico | well, try it :) |
| 14:42:11 | Yardanico | I didn't really use any low-level networking in nim |
| 14:42:18 | Yardanico | like raw sockets |
| 14:56:11 | miran | question about `countup`: is there a reason why step must be int? |
| 14:56:34 | miran | just found out i cannot do `countup(3.0, 15.0, 0.5)` |
| 15:04:44 | miran | oh, start and stop also cannot be floats. :( |
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| 15:08:17 | dom96 | gogolxdong: it's pointless, just use a string. |
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| 15:14:27 | FromGitter | <zacharycarter> graphql parsing w/Nim ! - ⏎ ⏎ ```code paste, see link``` [https://gitter.im/nim-lang/Nim?at=5aa3f65253c1dbb743c760e2] |
| 15:16:13 | dom96 | Awesome :D |
| 15:22:40 | Yardanico | zacharycarter: what is "graphql_error_free" ? does it use pointers? just curious |
| 15:24:47 | FromGitter | <zacharycarter> ```code paste, see link``` [https://gitter.im/nim-lang/Nim?at=5aa3f8bf6f8b4b99460f65ec] |
| 15:27:22 | FromGitter | <zacharycarter> ```void graphql_error_free(const char *error) { ⏎ std::free((void *)(error)); // NOLINT ⏎ }``` [https://gitter.im/nim-lang/Nim?at=5aa3f9596f8b4b99460f68bf] |
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| 15:42:16 | federico3 | zacharycarter: that was fast |
| 15:42:51 | FromGitter | <zacharycarter> :) |
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| 16:38:57 | FromGitter | <littleli> hi guys, what is the way to produce statically linked binary? |
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| 17:26:11 | FromGitter | <zacharycarter> dom96: https://nimble.directory/ is 502ing for me |
| 17:26:16 | FromGitter | <zacharycarter> nm |
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| 17:26:39 | dom96 | Don't ping me, ping federico3 |
| 17:27:11 | FromGitter | <littleli> @zacharycarter looks like ephemeral problem |
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| 17:37:55 | shashlick | @zacharycarter: which files did you wrap? I tried last night and had issues with the bison files |
| 17:43:56 | federico3 | zacharycarter: works for me - did it happen on a specific pkg? |
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| 17:48:53 | fvs | hi, is there a limit to how long a src line can be? |
| 17:49:54 | dom96 | IIRC there is |
| 17:49:58 | dom96 | There is an issue about that somewhere |
| 17:50:26 | shashlick | got a c2nim crash for this: https://pastebin.com/iDzA9CNF |
| 17:50:40 | shashlick | c2nim --cpp --stdcall --header:headerGraphQLParser --out:nimgraphql\GraphQLParser.nim temp-GraphQLParser.nim.c |
| 17:50:41 | shashlick | SIGSEGV: Illegal storage access. (Attempt to read from nil?) |
| 17:50:49 | shashlick | c2nim doesn't like recursive namespaces? |
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| 18:15:42 | * | girvo waves hello |
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| 19:03:58 | FromGitter | <zetashift> @girvo hiya! how's it going |
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| 19:58:51 | girvo | It's going well! Though I've been deep in React Native/Flow instead of Nim because of work recently, which sucks |
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| 20:09:47 | FromGitter | <zetashift> well it could always be worse it could just be untyped javascript! |
| 20:11:56 | girvo | Definitely, haha. And I've got this app using Higher Kinded Types through flow-static-land, and full runtime decoding (strongly typed with proper Flow inference) of JSON, and 99.8% coverage :D |
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| 20:41:02 | adeohluwa | say u wanted to write a nim code that uses the twilio library |
| 20:41:30 | adeohluwa | they have a C library & a node js library |
| 20:42:32 | adeohluwa | which is better to run with? 🤔 |
| 20:46:14 | dom96 | C library, always. |
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| 21:06:03 | federico3 | are deques recommended for "circular" buffers? Are addLast and popFirst O(1) ? |
| 21:07:51 | federico3 | aha: "double-ended queue backed with a ringed seq buffer" - from the sources |
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| 22:10:46 | Temperance[m] | is there something like a "main" function in nim? |
| 22:11:13 | girvo | `when isMainModule:` |
| 22:12:15 | girvo | It takes a block, and viola! You can even write your own `proc main(argv: seq[string]): int` and then call it in the `isMainModule` block :) |
| 22:17:57 | girvo | Temperance[m]: https://hastebin.com/nipocetapa.nim |
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| 22:29:53 | Temperance[m] | thanks |
| 22:30:34 | Temperance[m] | can someone explain me this? window_code.nim(277, 8) Error: type mismatch: got <context, type color> |
| 22:30:35 | Temperance[m] | but expected one of: |
| 22:30:36 | Temperance[m] | proc (ctx: context, col: color){.closure.} |
| 22:30:47 | Temperance[m] | I seem to have the same things... though obviously there are differences, but I'm not understanding them in full. |
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| 22:31:20 | girvo | Throw the code snippet up on hastebin or something for me? |
| 22:32:02 | Temperance[m] | I'm mixing two files and editing code that isn't mine to test stuff, I don't think it would be much readable, let me see if I can replicate it in less lines. |
| 22:32:48 | girvo | No problem :) |
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| 23:06:05 | dom96 | Temperance[m]: 'type color', you're passing a type instead of a variable of type 'color'? |
| 23:06:31 | dom96 | You should really begin your type names with an upper case letter |
| 23:06:41 | dom96 | will make things less confusing |
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