Re: Seq with custom fields

Thanks for that example! I think I have seen code somewhere where someone has used templates for something similar, but i can not find it currently. But I also think that inline procs should be fine. Well, for inline procs to work over module boundaries we may need link time optimization enable

Re: Seq with custom fields

You will need to add this proc for the add: proc add*(es: var ExtSeq; x: int) {.inline.}= es.s.add(x) The inline pragma isn't necessary, but it speeds things up a little. For using the index tokens ([ and ]), you just need to override that proc too: # Get

Seq with custom fields

I think I have still not really learned that. I think I may write something like type ExtSeq = object s: seq[int] timestamp: string var es: ExtSeq # init es.s.add(7) echo es.s[0] echo es.timestamp But I would

Re: How to compile a shared library for JNI?

just when I thought, that there won't be an error anymore, I got an error, but the stacktrace is weird: > last compile:run [debug] javaOptions: List(-Djava.library.path=src/native) [info] Running scalanim.Main java.lang.RuntimeException: Nonzero exit code returned from ru

Re: How to compile a shared library for JNI?

I'm on Ubuntu 14.04, but with a more recent JVM (1.8.0_74-b02). Nim version is the last tagged release 0.15.2. Regarding the repeating: You could simply use that other `run.sh` script and replace the java command by `sbt run`. Or if you want to avoid the load up time: Add `addSbtPlugin("com.git

Re: How to compile a shared library for JNI?

I tried the sbt task, and no crash after more than 20 times running the `run` task. I simply cannot reproduce the error. I would like to have a run script for that task, too. Btw, what is your current platform? I am on Arch Linux, and I am on the latest development branch of Nim at the time of

Re: better example code for tutorial partI Iterators

You can: * Fork the Nim repository on Github: [https://github.com/nim-lang/Nim](https://github.com/nim-lang/Nim) * Edit the file doc/tut1.rst to your liking * Use "create pull request" to contribute your modification

Re: Macros and imports

@Krux02 Thanks, I'm not against if it's really worth it. Though if it's not covered in tutorials, it is probably just too specific for tutorials: as I understand, they are for quick introduction, and the manual - for learning the language. In the manual "bind", "mixin" and "bindSym" are mentione

Re: How to compile a shared library for JNI?

It varies a lot: When running the Scala example from the SBT shell it is maybe 1 out of 5. For the Java example on the debug branch I'm using the `run.sh` which simply performs 1000 iterations and terminates on a crash. I'm usually crashing within <200 iterations, sometimes in the first 10, max

Re: better example code for tutorial partI Iterators

Thank you for the reply! Just that, I'm very new here and I am not quite sure what submit a PR means. Would you mind telling me?

Re: How to compile a shared library for JNI?

how often do I need to execute run from sbt? Every time I tried it, it just worked.

Re: How to compile a shared library for JNI?

Good idea to emit `NimMain();`, but unfortunately it still crashes. I was wondering if it is due to either the function signature or maybe the `printf`. But using exactly your function does also crash (with a lower probability though, requires >> 100 iterations).

Re: How to compile a shared library for JNI?

Hi, I wrote JNI sample code. Try this. import jnim import dynlib proc Java_HelloJNI_hello*(env: JNIEnvPtr, me:jobject, arg:jstring ): jstring {.cdecl,exportc,dynlib.} = if theEnv == nil : {.emit: """ NimMain(); """.} theEnv =

Re: Why do custom types need to be reference counted objects for dynamic dispatch to work.

Wow. Thanks for that post. I think this belongs in the docs somewhere or on a wiki. I came across this issue when I was change the prototype of a base method but forgot to change one of the child objects. So for that specific child object it was using the base method. Would using the base pragm

Re: Why do custom types need to be reference counted objects for dynamic dispatch to work.

Yes, objects need to be reference counted for methods to work. This is because only reference types can point to variable-length memory regions. Take the below code: type Animal = ref object of RootObj name: string Dog = ref object of Animal breed

Why do custom types need to be reference counted objects for dynamic dispatch to work.

Let's have a code example. When I'm using ref object of ... This code: type Animal = ref object of RootObj name: string method makeNoise(this: Animal) {.base.} = echo "..." type Human = ref object of Animal Dog = ref object of Ani

Nim threads vs Pthreads

So I'm working with threads, and I've found the Nim threads to be somewhat limitating. Now, I'm wondering what differences are between those two? My main question is: do I get the GC for posix threads too, or I need to set up it by myself?

Re: How to compile a shared library for JNI?

@Krux02: Everything prepared here: [https://github.com/bluenote10/JniScalaNimExample](https://github.com/bluenote10/JniScalaNimExample) The master branch contains a SBT + Scala setup, including a customized build task (coupled to "compile") and source monitoring so that ~test / ~compile / ~run