Re: Help playing sounds using arsd.simpleaudio
On Saturday, 19 October 2019 at 02:10:54 UTC, Adam D. Ruppe wrote: On Saturday, 19 October 2019 at 01:48:57 UTC, Murilo wrote: init: Operation not permitted Your system probably uses PulseAudio which I don't like, so I don't support it in my code. It *might* work to run `pasuspender -- ./your_program_here` but I don't know. I can check more tomorrow. That unfortunately didn't work. I would be very grateful if you could find out a way around it and tell me.
Re: Some questions about GC
On Friday, October 18, 2019 10:54:55 AM MDT Roland Hadinger via Digitalmars- d-learn wrote: > These questions probably need some context: I'm working on an > interpreter that will manage memory via reference counted struct > types. To deal with the problem of strong reference cycles > retaining memory indefinitely, weak references or recursive > teardowns have to be used where appropriate. > > To help detect memory leaks from within the interpreter, I'd also > like to employ core.memory.GC in the following fashion: > > * keep core.memory.GC off (disabled) by default, but nonetheless > allocate objects from GC memory > * provide a function that can find (and reclaim) retained > unreachable object graphs that contain strong reference cycles > * the main purpose of this function is to find and report such > instances, not to reclaim memory. Retained graphs should be > reported as warnings on stderr, so that the program can be fixed > manually, e.g. by weakening some refs in the proper places > * the function will rely on GC.collect to find unreachable objects > * the function will *always* be called implicitly when a program > terminates > * the function should also be explicitly callable from any point > within a program. > > Now my questions: > > Is it safe to assume that a call to GC.collect will be handled > synchronously (and won't return early)? D's GC is a stop-the-world GC. Every thread managed by the GC is stopped when a thread runs a collection. > Is there a way to ensure that GC.collect will never run unless > when called explicitly (even in out of memory situations)? The GC only runs a collection either when you explicitly tell it to or when you try to allocate memory using the GC, and it determines that it should run a collection. Disabling the GC normally prevents a collection from running, though per the documentation, it sounds like it may still run if the GC actually runs out of memory. I had thought that it prevented collections completely, but that's not what the documentation says. I don't know what the current implementation does. > Is it possible and is it OK to print to stderr while the GC is > collecting (e.g. from @nogc code, using functions from > core.stdc.stdio)? No code in any thread managed by the GC is run while a collection is running unless it's code that's triggered by the collection itself (e.g. a finalizer being called on an object that's being collected - and even that isn't supposed to access GC-allocated objects, because the GC might have already destroyed them - e.g. in the case of cycle). If you want code to run at the same time as a GC collection, it's going to have to be in a thread that is not attached to the GC, and at that point, you shouldn't be accessing _anything_ that's managed by the GC unless you have a guarantee that what you're accessing won't be collected. And even then, you shouldn't be mutating any of it. Also, @nogc doesn't say anything about whether the code accesses GC-allocated objects. It just means that it's not allowed to access most GC functions, which usually just means that it doesn't allocate anything using the GC and that it doesn't risk running a collection. So, just because a function is @nogc doesn't necessarily mean that it's safe to run it from a thread that isn't managed by the GC while a collection is running. > Could I implement my function by introducing a shared global flag > which is set prior to calling GC.collect and reset afterwards, so > that any destructor can determine whether has been invoked by a > "flagged" call to GC.collect and act accordingly? You should be able to do that, but then the destructor can't be pure (though as I understand it, there's currently a compiler bug with pure destructors anyway which causes them to not be called), and when a destructor is run as a finalizer, it shouldn't be accessing any other GC-allocated objects, because the GC might have actually destroyed them already at that point. Finalizers really aren't supposed to doh much of anything other than managing what lives in an object directly or managing non-GC-allocated resources. Regardless, anything that really should be operating as a destructor rather than a finalizer has to live on the stack, since finalizers won't be run until a collection occurs. If you're explicitly running them yourself via your own reference counting, then you don't have that problem, but if there's any chance that a destructor is going to be run as a finalizer by the GC, then you have to write your destructors / finalizers with the idea that that could happen. > Alternatively: do I need to implement such a flag, or is there > already a way in which a destructor can determine whether it has > been invoked by the GC? > > Thanks for any help! Honestly, the way things are set up, destructors aren't supposed to know or care about whether they're being run by the GC as a finalizer. So, the GC isn't going to provide that kind of functionality. What you're
Re: Help playing sounds using arsd.simpleaudio
On Saturday, 19 October 2019 at 01:48:57 UTC, Murilo wrote: init: Operation not permitted Your system probably uses PulseAudio which I don't like, so I don't support it in my code. It *might* work to run `pasuspender -- ./your_program_here` but I don't know. I can check more tomorrow.
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
On Saturday, 19 October 2019 at 00:57:48 UTC, Prokop Hapala wrote: The dmech/demos also seems to be almost running just it somehow cannot find or use my libsdl.so library which it just compiled (it is in 'dmech/demos/lib') derelict.util.exception.SharedLibLoadException@derelict/util/exception.d(43): Failed to load one or more shared libraries: ./lib/libsdl.so - ./lib/libsdl.so: wrong ELF class: ELFCLASS32 The problem is there in the error message. You have a 32-bit version of SDL, but you're compiling a 64-bit app. You need the 64-bit SDL.
Re: Help playing sounds using arsd.simpleaudio
but at the beginning of main() set it up with
auto audio = new AudioPcmOutThread();
audio.start();
scope(exit) {
audio.stop();
audio.join();
}
Thanks Adam. That worked on Windows, but now that I have switched
to Linux Mint it is throwing this:
arsd.simpleaudio.AlsaException@arsd/simpleaudio.d(1170): params
init: Operation not permitted
??:? arsd.simpleaudio.snd_pcm_t*
arsd.simpleaudio.openAlsaPcm(arsd.simpleaudio.snd_pcm_stream_t)
[0x55eab05a0f4a]
??:? ref arsd.simpleaudio.AudioOutput
arsd.simpleaudio.AudioOutput.__ctor(int) [0x55eab059f7ec]
??:? void arsd.simpleaudio.AudioPcmOutThread.run()
[0x55eab059f23d]
??:? void core.thread.Thread.run() [0x55eab05c10d1]
??:? thread_entryPoint [0x55eab05d809b]
??:? [0x7fb40e4ff6da]
What should I do?
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
The dmech/demos also seems to be almost running just it somehow cannot find or use my libsdl.so library which it just compiled (it is in 'dmech/demos/lib') (dmd-2.088.0)(dmd-2.088.0)prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dmech/demos$ dub Performing "debug" build using /home/prokop/dlang/dmd-2.088.0/linux/bin64/dmd for x86_64. dlib 0.16.0: target for configuration "library" is up to date. demo ~master: target for configuration "pyramid" is up to date. To force a rebuild of up-to-date targets, run again with --force. Running ./pyramid derelict.util.exception.SharedLibLoadException@derelict/util/exception.d(43): Failed to load one or more shared libraries: ./lib/libsdl.so - ./lib/libsdl.so: wrong ELF class: ELFCLASS32 derelict/util/exception.d:75 void derelict.util.exception.SharedLibLoadException.throwNew(const(char[][]), const(char[][])) [0x55ecce3ed712] derelict/util/sharedlib.d:221 void derelict.util.sharedlib.SharedLib.load(immutable(char)[][]) [0x55ecce3edef3] derelict/util/loader.d:91 void derelict.util.loader.SharedLibLoader.load(immutable(char)[][]) [0x55ecce3edb54] derelict/util/loader.d:86 void derelict.util.loader.SharedLibLoader.load(immutable(char)[]) [0x55ecce3edb25] dgl/core/application.d:185 void dgl.core.application.loadLibraries() [0x55ecce3f1127] pyramid.d:385 _Dmain [0x55ecce406a68] Program exited with code 1
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
The whole thing is like this: prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ source ~/dlang/dmd-2.088.0/activate (dmd-2.088.0)prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ dub WARNING: A deprecated branch based version specification is used for the dependency dagon. Please use numbered versions instead. Also note that you can still use the dub.selections.json file to override a certain dependency to use a branch instead. Invalid source/import path: /home/prokop/git_SW/_Dlang/dagon-demo/shaders Performing "debug" build using /home/prokop/dlang/dmd-2.088.0/linux/bin64/dmd for x86_64. bindbc-loader 0.1.1: target for configuration "noBC" is up to date. bindbc-ft 0.1.0: target for configuration "library" is up to date. bindbc-nuklear 0.1.0: target for configuration "dynamic" is up to date. bindbc-opengl 0.4.0: target for configuration "dynamic" is up to date. bindbc-sdl 0.4.1: target for configuration "dynamic" is up to date. dlib 0.16.0: target for configuration "library" is up to date. dagon ~dev_0.10: target for configuration "library" is up to date. dagondemo 0.10.0+commit.6.gdf2dd63: target for configuration "application" is up to date. To force a rebuild of up-to-date targets, run again with --force. Copying files for dagon... Invalid source/import path: /home/prokop/git_SW/_Dlang/dagon-demo/shaders Running ./dagondemo
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
On Friday, 18 October 2019 at 20:09:47 UTC, Aldo wrote:
Try to move that libnuklear.so or rename it to nuklear.so. I
checked bindbc code and saw :
version(Windows) {
const(char)[][1] libNames = ["nuklear.dll"];
}
else version(OSX) {
const(char)[][1] libNames = ["nuklear.dylib"];
}
else version(Posix) {
const(char)[][2] libNames = [
"nuklear.so",
"/usr/local/lib/nuklear.so",
];
}
Great! progress! ... It shown loading splash screen and moving
loading bar, when it reach the end, it segfault
prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ ./dagondemo
Loading scene "TestScene"
Segmentation fault (core dumped)
possibly it it connected with the error I saw during compilation:
Copying files for dagon...
Invalid source/import path:
/home/prokop/git_SW/_Dlang/dagon-demo/shaders
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
On Friday, 18 October 2019 at 19:20:04 UTC, Prokop Hapala wrote:
On Friday, 18 October 2019 at 06:24:38 UTC, Ferhat Kurtulmuş
wrote:
On Friday, 18 October 2019 at 06:11:37 UTC, Ferhat Kurtulmuş
wrote:
On Friday, 18 October 2019 at 05:52:19 UTC, Prokop Hapala
wrote:
Already >1 year I consider to move from C++ to Dlang or to
Rust in my hobby game development (mostly based on physical
simulations
https://github.com/ProkopHapala/SimpleSimulationEngine). I
probably prefer Dlang because it compiles much faster, and I
can copy C/C++ code to it without much changes.
[...]
I cannot make any comment for others. But Dagon should work.
I wrote a very little demo game some time ago
https://github.com/aferust/dagon-shooter. I didn't try to
compile and run it on Linux.I think you need to have a
nuklear.so in your path, since Bindbc loaders try to load
dynamic libraries by default.
https://github.com/Timu5/bindbc-nuklear/blob/master/README.md
"This library contains prebuild windows dll for Nuklear, on
different platforms you can easily build C source code from
cmake configuration in c directory."
I did what you say (I guess), but Nuclear still cannot be found:
prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ echo
$LD_LIBRARY_PATH
/home/prokop/git_SW/bindbc-nuklear/build:/home/prokop/torch/install/lib:
prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ ls
COPYINGdata dub.selections.json icon.ico input.conf
rcedit-x64.exe README.md src
dagondemo dub.json gamecontrollerdb.txt icon.txt
libnuklear.so rcedit-x86.exe settings.conf
prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ ./dagondemo
Error: Nuklear library is not found. Please, install Nuklear.
Try to move that libnuklear.so or rename it to nuklear.so. I
checked bindbc code and saw :
version(Windows) {
const(char)[][1] libNames = ["nuklear.dll"];
}
else version(OSX) {
const(char)[][1] libNames = ["nuklear.dylib"];
}
else version(Posix) {
const(char)[][2] libNames = [
"nuklear.so",
"/usr/local/lib/nuklear.so",
];
}
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
On Friday, 18 October 2019 at 06:24:38 UTC, Ferhat Kurtulmuş wrote: On Friday, 18 October 2019 at 06:11:37 UTC, Ferhat Kurtulmuş wrote: On Friday, 18 October 2019 at 05:52:19 UTC, Prokop Hapala wrote: Already >1 year I consider to move from C++ to Dlang or to Rust in my hobby game development (mostly based on physical simulations https://github.com/ProkopHapala/SimpleSimulationEngine). I probably prefer Dlang because it compiles much faster, and I can copy C/C++ code to it without much changes. [...] I cannot make any comment for others. But Dagon should work. I wrote a very little demo game some time ago https://github.com/aferust/dagon-shooter. I didn't try to compile and run it on Linux.I think you need to have a nuklear.so in your path, since Bindbc loaders try to load dynamic libraries by default. https://github.com/Timu5/bindbc-nuklear/blob/master/README.md "This library contains prebuild windows dll for Nuklear, on different platforms you can easily build C source code from cmake configuration in c directory." I did what you say (I guess), but Nuclear still cannot be found: prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ echo $LD_LIBRARY_PATH /home/prokop/git_SW/bindbc-nuklear/build:/home/prokop/torch/install/lib: prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ ls COPYINGdata dub.selections.json icon.ico input.conf rcedit-x64.exe README.md src dagondemo dub.json gamecontrollerdb.txt icon.txt libnuklear.so rcedit-x86.exe settings.conf prokop@prokop-Lenovo-ideapad-Y700-15ISK:~/git_SW/_Dlang/dagon-demo$ ./dagondemo Error: Nuklear library is not found. Please, install Nuklear.
Some questions about GC
These questions probably need some context: I'm working on an interpreter that will manage memory via reference counted struct types. To deal with the problem of strong reference cycles retaining memory indefinitely, weak references or recursive teardowns have to be used where appropriate. To help detect memory leaks from within the interpreter, I'd also like to employ core.memory.GC in the following fashion: * keep core.memory.GC off (disabled) by default, but nonetheless allocate objects from GC memory * provide a function that can find (and reclaim) retained unreachable object graphs that contain strong reference cycles * the main purpose of this function is to find and report such instances, not to reclaim memory. Retained graphs should be reported as warnings on stderr, so that the program can be fixed manually, e.g. by weakening some refs in the proper places * the function will rely on GC.collect to find unreachable objects * the function will *always* be called implicitly when a program terminates * the function should also be explicitly callable from any point within a program. Now my questions: Is it safe to assume that a call to GC.collect will be handled synchronously (and won't return early)? Is there a way to ensure that GC.collect will never run unless when called explicitly (even in out of memory situations)? Is it possible and is it OK to print to stderr while the GC is collecting (e.g. from @nogc code, using functions from core.stdc.stdio)? Could I implement my function by introducing a shared global flag which is set prior to calling GC.collect and reset afterwards, so that any destructor can determine whether has been invoked by a "flagged" call to GC.collect and act accordingly? Alternatively: do I need to implement such a flag, or is there already a way in which a destructor can determine whether it has been invoked by the GC? Thanks for any help!
Re: PHP to D Conversion
On Friday, 18 October 2019 at 09:21:46 UTC, Vino wrote:
On Friday, 18 October 2019 at 09:17:24 UTC, Vino wrote:
On Friday, 18 October 2019 at 09:11:18 UTC, Vino wrote:
[...]
App.d
import vibe.vibe;
import avm.test;
void main()
{
auto settings = new HTTPServerSettings;
settings.port = 8080;
settings.bindAddresses = ["127.0.0.1"];
listenHTTP(settings, );
logInfo("Please open http://127.0.0.1:8080/ in your
browser.");
runApplication();
}
void hello(HTTPServerRequest req, HTTPServerResponse res)
{
test t = new avmtest();
res.writeBody(t.getHostname);
}
And now getting the error : Program exited with code -1073741819
Hi,
Maybe port 8080 is blocked, because there is an instance of your
application running on the background. Just check by changing the
port in the source code.
Kind regards
Andre
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 13:30:37 UTC, Martin Tschierschke wrote: On Friday, 18 October 2019 at 12:51:35 UTC, bachmeier wrote: On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: If I search for what ever, not related to D, I very often end with a solution found on one of the StackExchange forums like StackOverflow or AskUbuntu etc. The main advantage is, that all answers can be classified (up/down voted, moderated etc.) This is much better than finding something in the D-Learn Forum where it is difficult to see, if several answers are given are they still valid, especially if they are some years old. I know that this was asked in the D survey and I think it should be on the table again. If we unite for this idea, it should be possible to start an own "DExchange" sub platform. Best regards mt. You can already ask questions on SO. What you are proposing is to close this forum, require registration to ask a question, and let JavaScript developers close questions and treat new users rudely. That doesn't seem like a good idea. The fact that most questions get asked here rather than on SO now suggests that there isn't much demand for SO. I am not for moving just to StackOverflow, but to make an own "DExchange" / "AskD" or what ever named learn platform with and inside the StackExchange [1] technology. This should keep D users together and would avoid mixing with other languages. But I am not sure if this is really achievable for us. [1] https://stackexchange.com/sites# But then users would have to register for a new site, even if they already have a SO account. That would greatly reduce the number willing to ask questions. I don't have a problem with doing that (and you certainly can do so without asking anyone) but I strongly oppose shutting down D.learn.
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 13:38:11 UTC, Ron Tarrant wrote: I have found that StackExchange does often have answers, but I can't say I like asking questions on there, especially if the question is almost-the-same-but-not-the-same as a question asked earlier. In cases like this, I've been told that the previous answer applies to my question, even when it doesn't. Was that tagged D? Other tags tend to get obnoxious attention, but stuff tagged D usually gets jumped on fairly quickly by people you'd recognize here and we're all pretty easy going and can push back if outside moderators get involved. Though really since it is the same people, I don't see any real difference in asking here or SO on IRC. SO might be better for searching and I do often write a little more there for those searches and links, but I don't particularly mind duplicates anyway.
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 13:38:11 UTC, Ron Tarrant wrote: On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: I very often end with a solution found on one of the StackExchange forums like > StackOverflow or AskUbuntu etc. I have found that StackExchange does often have answers, but I can't say I like asking questions on there, especially if the question is almost-the-same-but-not-the-same as a question asked earlier. In cases like this, I've been told that the previous answer applies to my question, even when it doesn't. In one instance, a moderator closed my question without reading the details in order to find out that, no, it's not the same question at all... and then refuse to reopen the question when I point this out. So, although I'll continue to use StackExchange as an historical resource, I would rather not depend on it for getting answers to new questions. This is why I am for an own D Learn Forum, the process is (partly) described here: https://meta.stackexchange.com/questions/76974/how-can-i-propose-a-new-site The moderators of this should come from this forum community, if this can not be achieved, I am against a move, too.
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 12:41:53 UTC, Paolo Invernizzi wrote: On Friday, 18 October 2019 at 11:45:33 UTC, Seb wrote: On Friday, 18 October 2019 at 10:55:59 UTC, Martin Tschierschke wrote: [...] In the state of the D survey, there were more people in favor of StackOverflow than D.learn, but to be fair the majority voted for "I don't care" https://rawgit.com/wilzbach/state-of-d/master/report.html Maybe it's possible to simply add an up/down vote functionality to the forum only, just keeping the compatibility with the newsgroup ... It's a win/win solution! +1 It may help in the DIP discussions, too! You can just see if an argument for or against a change, is accepted by the majority of thread readers or not. And you can highlight those up-voted arguments to get an better impression about the outcome of the discussion in total.
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: I very often end with a solution found on one of the StackExchange forums like > StackOverflow or AskUbuntu etc. I have found that StackExchange does often have answers, but I can't say I like asking questions on there, especially if the question is almost-the-same-but-not-the-same as a question asked earlier. In cases like this, I've been told that the previous answer applies to my question, even when it doesn't. In one instance, a moderator closed my question without reading the details in order to find out that, no, it's not the same question at all... and then refuse to reopen the question when I point this out. So, although I'll continue to use StackExchange as an historical resource, I would rather not depend on it for getting answers to new questions.
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 12:51:35 UTC, bachmeier wrote: On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: If I search for what ever, not related to D, I very often end with a solution found on one of the StackExchange forums like StackOverflow or AskUbuntu etc. The main advantage is, that all answers can be classified (up/down voted, moderated etc.) This is much better than finding something in the D-Learn Forum where it is difficult to see, if several answers are given are they still valid, especially if they are some years old. I know that this was asked in the D survey and I think it should be on the table again. If we unite for this idea, it should be possible to start an own "DExchange" sub platform. Best regards mt. You can already ask questions on SO. What you are proposing is to close this forum, require registration to ask a question, and let JavaScript developers close questions and treat new users rudely. That doesn't seem like a good idea. The fact that most questions get asked here rather than on SO now suggests that there isn't much demand for SO. I am not for moving just to StackOverflow, but to make an own "DExchange" / "AskD" or what ever named learn platform with and inside the StackExchange [1] technology. This should keep D users together and would avoid mixing with other languages. But I am not sure if this is really achievable for us. [1] https://stackexchange.com/sites#
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: If I search for what ever, not related to D, I very often end with a solution found on one of the StackExchange forums like StackOverflow or AskUbuntu etc. The main advantage is, that all answers can be classified (up/down voted, moderated etc.) This is much better than finding something in the D-Learn Forum where it is difficult to see, if several answers are given are they still valid, especially if they are some years old. I know that this was asked in the D survey and I think it should be on the table again. If we unite for this idea, it should be possible to start an own "DExchange" sub platform. Best regards mt. And on the issue of knowing which answers are still valid, that hasn't been the case for a long time on SO. I wasted a lot of time yesterday with not one but two accepted answers on regular expressions that were wrong (both did solve the specific problem, but neither did what was claimed).
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: If I search for what ever, not related to D, I very often end with a solution found on one of the StackExchange forums like StackOverflow or AskUbuntu etc. The main advantage is, that all answers can be classified (up/down voted, moderated etc.) This is much better than finding something in the D-Learn Forum where it is difficult to see, if several answers are given are they still valid, especially if they are some years old. I know that this was asked in the D survey and I think it should be on the table again. If we unite for this idea, it should be possible to start an own "DExchange" sub platform. Best regards mt. You can already ask questions on SO. What you are proposing is to close this forum, require registration to ask a question, and let JavaScript developers close questions and treat new users rudely. That doesn't seem like a good idea. The fact that most questions get asked here rather than on SO now suggests that there isn't much demand for SO.
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 11:45:33 UTC, Seb wrote: On Friday, 18 October 2019 at 10:55:59 UTC, Martin Tschierschke wrote: [...] In the state of the D survey, there were more people in favor of StackOverflow than D.learn, but to be fair the majority voted for "I don't care" https://rawgit.com/wilzbach/state-of-d/master/report.html Maybe it's possible to simply add an up/down vote functionality to the forum only, just keeping the compatibility with the newsgroup ... It's a win/win solution!
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 10:55:59 UTC, Martin Tschierschke wrote: Yes, it works as it is, but it is not the best solution to share know how. I agree. I think D.learn should be moved to stackoverflow and D.general should stay here.
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 10:55:59 UTC, Martin Tschierschke wrote: On Friday, 18 October 2019 at 10:23:28 UTC, jmh530 wrote: On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: [snip] I think this is something that's been proposed before, but most people are happy with just asking a question here and usually people are pretty good about helping out with answers when possible. Yes, it works as it is, but it is not the best solution to share know how. And if I just think: Hey, your answer is good, in the mailinglist / forum / newsgroup setup it is impossible to easily vote for it and get a count of this votes. I think it is possible to extended the web front end of the forum in this direction and automatically map an '+1' or '-1' comment (in a single line) to a counter which will be displayed beside the commented post. But this is reinventing the wheel... I am just sad, that many very good questions and answers given in the forum are not so easy to find as they should. In the state of the D survey, there were more people in favor of StackOverflow than D.learn, but to be fair the majority voted for "I don't care" https://rawgit.com/wilzbach/state-of-d/master/report.html
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 10:23:28 UTC, jmh530 wrote: On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: [snip] I think this is something that's been proposed before, but most people are happy with just asking a question here and usually people are pretty good about helping out with answers when possible. Yes, it works as it is, but it is not the best solution to share know how. And if I just think: Hey, your answer is good, in the mailinglist / forum / newsgroup setup it is impossible to easily vote for it and get a count of this votes. I think it is possible to extended the web front end of the forum in this direction and automatically map an '+1' or '-1' comment (in a single line) to a counter which will be displayed beside the commented post. But this is reinventing the wheel... I am just sad, that many very good questions and answers given in the forum are not so easy to find as they should.
Re: Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
On Friday, 18 October 2019 at 07:35:21 UTC, Martin Tschierschke wrote: [snip] I think this is something that's been proposed before, but most people are happy with just asking a question here and usually people are pretty good about helping out with answers when possible.
Re: PHP to D Conversion
On Friday, 18 October 2019 at 09:17:24 UTC, Vino wrote:
On Friday, 18 October 2019 at 09:11:18 UTC, Vino wrote:
[...]
App.d
import vibe.vibe;
import avm.test;
void main()
{
auto settings = new HTTPServerSettings;
settings.port = 8080;
settings.bindAddresses = ["127.0.0.1"];
listenHTTP(settings, );
logInfo("Please open http://127.0.0.1:8080/ in your browser.");
runApplication();
}
void hello(HTTPServerRequest req, HTTPServerResponse res)
{
test t = new avmtest();
res.writeBody(t.getHostname);
}
And now getting the error : Program exited with code -1073741819
Re: PHP to D Conversion
On Friday, 18 October 2019 at 09:11:18 UTC, Vino wrote:
On Friday, 18 October 2019 at 08:54:40 UTC, Jacob Carlborg
wrote:
On Friday, 18 October 2019 at 06:22:33 UTC, Vino wrote:
[...]
The instance variable in the D code, `conn`, doesn't have a
type. I guess the type should be `Connection`. In the D
version of `avmconnect` you're declaring a local variable
named `conn` instead of referring to the instance variable.
--
/Jacob Carlborg
Hi Jacob,
Thank you, I have made the below changes, and rebuilt the
application, now the application complied without any error,
but when i try to access the URL from webpage it errors out
with "127.0.0.1 refused to connect"
private Connection conn; //added
scope(exit) conn.close(); //removed
From,
Vino.B
App.d
import vibe.vibe;
import avm.test;
void main()
{
auto settings = new HTTPServerSettings;
settings.port = 8080;
settings.bindAddresses = ["127.0.0.1"];
listenHTTP(settings, );
logInfo("Please open http://127.0.0.1:8080/ in your browser.");
runApplication();
}
void hello(HTTPServerRequest req, HTTPServerResponse res)
{
test t = new avmtest();
res.writeBody(t.getHostname);
}
Re: PHP to D Conversion
On Friday, 18 October 2019 at 08:54:40 UTC, Jacob Carlborg wrote: On Friday, 18 October 2019 at 06:22:33 UTC, Vino wrote: [...] The instance variable in the D code, `conn`, doesn't have a type. I guess the type should be `Connection`. In the D version of `avmconnect` you're declaring a local variable named `conn` instead of referring to the instance variable. -- /Jacob Carlborg Hi Jacob, Thank you, I have made the below changes, and rebuilt the application, now the application complied without any error, but when i try to access the URL from webpage it errors out with "127.0.0.1 refused to connect" private Connection conn; //added scope(exit) conn.close(); //removed From, Vino.B
Issue with --build=profile
I'm working on a rather big project which I'm compiling with DMD/LDC. The thing is when I'm trying to profile it, using `dub build --build=profile`, weird issues keep popping up, coming from the project's dependencies... eg. "Warning: statement is not reachable" from the dyaml package. And then it crashes with "/Library/D/dmd/bin/dmd failed with exit code 1." How could I deal with this? (In case it matters, I could also point you to my project sources, although I don't think it has anything to do with my project per-se)
Re: Vibe.d Error
On Friday, 18 October 2019 at 08:06:30 UTC, Vino wrote: I tried install vibe.d in SUSE linux 12 SP2 and facing the below error, tried the options as per the link https://github.com/vibe-d/vibe.d/issues/1748, still no luck and the lib's are installed in the server Read the last section of the readme https://github.com/vibe-d/vibe.d/blob/master/README.md#switching-between-openssl-versions SUSE 12 use openssl 1.0.x version but Vibe.d is trying to link to 1.1, try putting in your dub file: subConfiguration "vibe-d:tls" "openssl-1.0"
Re: PHP to D Conversion
On Friday, 18 October 2019 at 06:22:33 UTC, Vino wrote:
class avmtest
{
private conn;
You need to specify the type of conn. private Connection conn;
auto avmconnect()
{
auto connectionStr =
"host=test.srv.com;port=3910;user=testusr;pwd=#;db=test";
Connection conn = new Connection(connectionStr);
scope(exit) conn.close();
}
You are using a new connection here, maybe you want to use
this->conn instead of Connection conn;
By the way you are closing it everytime with scope(exit).
Re: PHP to D Conversion
On Friday, 18 October 2019 at 06:22:33 UTC, Vino wrote:
Hi All,
Request your help in converting a PHP code to D equivalent
code
PHP Code:
class avmtest {
private $con;
function __construct() {
global $config;
$this->con = new mysqli(test.srv.com:3910,
testusr, #, test);
if($this->con->connect_errno) { die("Connection
Failed.\n"); }
}
function getHostname() {
$qdata = $this->con->prepare("SELECT host_name
FROM hosts_coll");
$qdata->execute();
$qdata->bind_result($host);
while($qdata->fetch()) {
$data[] = array("HostName" => $host);
}
$sdata->close();
return $data;
}
}
D Code:
module avm.test;
import mysql;
import std.array : array;
import std.conv;
import std.variant;
class avmtest
{
private conn;
auto avmconnect()
{
auto connectionStr =
"host=test.srv.com;port=3910;user=testusr;pwd=#;db=test";
Connection conn = new Connection(connectionStr);
scope(exit) conn.close();
}
auto getHostname()
{
ResultRange qdata = conn.query("SELECT host_name FROM
`hosts_coll`");
Row row = qdata.front;
Variant h = row[0];
qdata.close();
return h.to!string;
}
}
Error: Error: no identifier for declarator conn
The instance variable in the D code, `conn`, doesn't have a
type. I guess the type should be `Connection`. In the D version
of `avmconnect` you're declaring a local variable named `conn`
instead of referring to the instance variable.
--
/Jacob Carlborg
Blog Post #80: Notebook, Part IV - Customized Tabs, Part II
Here's the second instalment of the customized tabs discussion. May it bring you peace and joy. https://gtkdcoding.com/2019/10/18/0080-notebook-iv-custom-tabs-ii.html
Re: Vibe.d Error
On Friday, 18 October 2019 at 08:06:30 UTC, Vino wrote: On Thursday, 17 October 2019 at 19:02:14 UTC, Vino wrote: [...] Hi Andre, I tried install vibe.d in SUSE linux 12 SP2 and facing the below error, tried the options as per the link https://github.com/vibe-d/vibe.d/issues/1748, still no luck and the lib's are installed in the server [...] The same here on macOS Catilina ... I'm too interested in a solution for that
Re: Vibe.d Error
On Thursday, 17 October 2019 at 19:02:14 UTC, Vino wrote: On Thursday, 17 October 2019 at 18:12:54 UTC, Andre Pany wrote: On Thursday, 17 October 2019 at 10:58:20 UTC, Vino wrote: Hi All, We are planning to migrate our website form Mysql/PHP to Mysql/D using vibe.d , as part of the plan we tried to install the vibe.d (vibe.d 0.8.6 release) and we are facing below issue, we have tried both the version of compiler (DMD 2.088.1 DMD Beta 2.089.0-beta.1) the issue is same, and more over there are few deprecation thrown as below [...] Hi, I have almost same setup like you and it was compiling today. Just a guess, do you have Visual Studio or Build Tools installed on your pc and are the environment variables set while running Dub? This caused some similar issue on my side... Kind regards Andre Hi Andre, Thank you very much, it resolved the issue. From, Vino.B Hi Andre, I tried install vibe.d in SUSE linux 12 SP2 and facing the below error, tried the options as per the link https://github.com/vibe-d/vibe.d/issues/1748, still no luck and the lib's are installed in the server ldd /usr/bin/openssl linux-vdso.so.1 (0x7ffeec3c5000) libssl.so.1.0.0 => /lib64/libssl.so.1.0.0 (0x7f7b4f38c000) libcrypto.so.1.0.0 => /lib64/libcrypto.so.1.0.0 (0x7f7b4ef33000) libc.so.6 => /lib64/libc.so.6 (0x7f7b4eb92000) libdl.so.2 => /lib64/libdl.so.2 (0x7f7b4e98e000) libz.so.1 => /lib64/libz.so.1 (0x7f7b4e778000) /lib64/ld-linux-x86-64.so.2 (0x7f7b4f5f7000) "libs-posix": [ - "ssl.so", - "crypto.so" + ":libssl.so.1.0.0", + ":libcrypto.so.1.0.0" Error: /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/.dub/build/openssl-debug-linux.posix-x86_64-dmd_2088-CB557B2E529F5E252DFC68A6174A315F/libvibe-d_tls.a(openssl_18b_659.o): In function `_D4vibe6stream7openssl16SSL_library_initFZi': /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:84: undefined reference to `OPENSSL_init_ssl' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/.dub/build/openssl-debug-linux.posix-x86_64-dmd_2088-CB557B2E529F5E252DFC68A6174A315F/libvibe-d_tls.a(openssl_193_4f0.o): In function `_D4vibe6stream7openssl13OpenSSLStream6__ctorMFNfSQBv8internal14interfaceproxy__T14InterfaceProxyTCQDs4coreQDv6StreamZQBlCQEpQEnQEj14OpenSSLContextEQFpQFn3tls14TLSStreamStateAyaSQGtQDb3net14NetworkAddressAQBfZCQHzQHxQHtQHo': /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:237: undefined reference to `BIO_set_init' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:238: undefined reference to `BIO_set_data' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:239: undefined reference to `BIO_set_shutdown' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/.dub/build/openssl-debug-linux.posix-x86_64-dmd_2088-CB557B2E529F5E252DFC68A6174A315F/libvibe-d_tls.a(openssl_196_569.o): In function `_D4vibe6stream7openssl14OpenSSLContext6__ctorMFNfEQBwQBu3tls14TLSContextKindEQCxQCvQBb10TLSVersionZ9__lambda3MFNeZv': /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:614: undefined reference to `TLS_client_method' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:615: undefined reference to `TLS_client_method' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:619: undefined reference to `TLS_client_method' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:620: undefined reference to `TLS_client_method' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:627: undefined reference to `TLS_server_method' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:628: undefined reference to `TLS_server_method' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:630: undefined reference to `TLS_server_method' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:631: undefined reference to `TLS_server_method' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/.dub/build/openssl-debug-linux.posix-x86_64-dmd_2088-CB557B2E529F5E252DFC68A6174A315F/libvibe-d_tls.a(openssl_196_569.o): In function `_D4vibe6stream7openssl14OpenSSLContext11setDHParamsMFNeAyaZv': /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:893: undefined reference to `BN_get_rfc3526_prime_2048' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/.dub/build/openssl-debug-linux.posix-x86_64-dmd_2088-CB557B2E529F5E252DFC68A6174A315F/libvibe-d_tls.a(openssl_1a3_5a2.o): In function `_D4vibe6stream7openssl14initBioMethodsFNeZv': /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:1376: undefined reference to `BIO_get_new_index' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:1376: undefined reference to `BIO_meth_new' /root/.dub/packages/vibe-d-0.8.6/vibe-d/tls/vibe/stream/openssl.d:1378: undefined reference to `BIO_meth_set_write'
Meta question - what about moving the D - Learn Forum to a seperate StackExchange platform?
If I search for what ever, not related to D, I very often end with a solution found on one of the StackExchange forums like StackOverflow or AskUbuntu etc. The main advantage is, that all answers can be classified (up/down voted, moderated etc.) This is much better than finding something in the D-Learn Forum where it is difficult to see, if several answers are given are they still valid, especially if they are some years old. I know that this was asked in the D survey and I think it should be on the table again. If we unite for this idea, it should be possible to start an own "DExchange" sub platform. Best regards mt.
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
On Friday, 18 October 2019 at 06:36:49 UTC, Elronnd wrote: I guess I'm mostly confused as to what your roadblock is: once you've imported derelict.opengl, you have all the same opengl functions as you would have in c++; once you've imported derelict.sdl, you have all the same sdl functions as in c++. The only thing I can think of aside from that is math or gui libs--but in your c++ engine, it looks like you implemented those from scratch. The point is, I would like first to try some existing Dlang-based game or engine, to evaluate if Dlang really gives me so much more advantage/convenience over C++ (or Rust). Depending on that I will decide if it is worth to invest the effort to migrate all my stuff to Dlang. Also while in C/C++ I hacked most of functionality (math,GUI,renderer,physics-engine) from scratch, I would prefer to rely on some solid reliable standard libraries from Dlang. My stuff is usually kinda "The best you can make in one week". One reason why I re-implemented so much things (like GUI, which I really hate to do) is because I find it quite painful to install libraries in C/C++ (especially when versions changes). I hope that with Dlang's Dub or Rust's Cargo this will be much easier and I will use 3rd party libraries more.
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
Up to now I was able to compile just "First Triangle example" https://www.dropbox.com/sh/myem3g69qjyo58v/AABZuvwuRDpnskhEC4AAK5AVa?dl= Why not start with that, then, and expand it until it has everything you need? If it helps, the basic gl startup code for my engine is at http://ix.io/1Z2X/d and http://ix.io/1Z2Y/d (engine is closed-source, but feel free to steal that part for w/e you want). Obviously depends on a bunch of other infrastructure, but should be enough to get the idea. In the second link, you probably only want the constructor; everything else is irrelevant windowing stuff or boilerplate. I guess I'm mostly confused as to what your roadblock is: once you've imported derelict.opengl, you have all the same opengl functions as you would have in c++; once you've imported derelict.sdl, you have all the same sdl functions as in c++. The only thing I can think of aside from that is math or gui libs--but in your c++ engine, it looks like you implemented those from scratch. By the way, I recommend using bindbc (https://github.com/bindbc) wrappers over derelict ones, if available, because mike isn't really maintaining derelict anymore. He was pretty much the sole maintainer. I'm currently using a weird branch of derelictsdl for vulkan support, and a custom version of derelictassimp so it doesn't break.
PHP to D Conversion
Hi All,
Request your help in converting a PHP code to D equivalent code
PHP Code:
class avmtest {
private $con;
function __construct() {
global $config;
$this->con = new mysqli(test.srv.com:3910,
testusr, #, test);
if($this->con->connect_errno) { die("Connection
Failed.\n"); }
}
function getHostname() {
$qdata = $this->con->prepare("SELECT host_name
FROM hosts_coll");
$qdata->execute();
$qdata->bind_result($host);
while($qdata->fetch()) {
$data[] = array("HostName" => $host);
}
$sdata->close();
return $data;
}
}
D Code:
module avm.test;
import mysql;
import std.array : array;
import std.conv;
import std.variant;
class avmtest
{
private conn;
auto avmconnect()
{
auto connectionStr =
"host=test.srv.com;port=3910;user=testusr;pwd=#;db=test";
Connection conn = new Connection(connectionStr);
scope(exit) conn.close();
}
auto getHostname()
{
ResultRange qdata = conn.query("SELECT host_name FROM
`hosts_coll`");
Row row = qdata.front;
Variant h = row[0];
qdata.close();
return h.to!string;
}
}
Error: Error: no identifier for declarator conn
From,
Vino.B
Re: Vibe/Mysql Testing
On Thursday, 17 October 2019 at 20:21:39 UTC, Andre Pany wrote: On Thursday, 17 October 2019 at 19:05:44 UTC, Vino wrote: [...] Hi, I assume you are using this mysql package http://code.dlang.org/packages/mysql-native. (If not please check wheter the package you are using is vibe-d compliant.) The mysql package uses Variant from Phobos for storing values. For your example, you could write ```res.writeBody(row[0].toString());``` Kind regards Andre Hi Andre, Thanks it worked. From, Vino.B
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
On Friday, 18 October 2019 at 06:11:37 UTC, Ferhat Kurtulmuş wrote: On Friday, 18 October 2019 at 05:52:19 UTC, Prokop Hapala wrote: Already >1 year I consider to move from C++ to Dlang or to Rust in my hobby game development (mostly based on physical simulations https://github.com/ProkopHapala/SimpleSimulationEngine). I probably prefer Dlang because it compiles much faster, and I can copy C/C++ code to it without much changes. [...] I cannot make any comment for others. But Dagon should work. I wrote a very little demo game some time ago https://github.com/aferust/dagon-shooter. I didn't try to compile and run it on Linux.I think you need to have a nuklear.so in your path, since Bindbc loaders try to load dynamic libraries by default. https://github.com/Timu5/bindbc-nuklear/blob/master/README.md "This library contains prebuild windows dll for Nuklear, on different platforms you can easily build C source code from cmake configuration in c directory."
Re: Any 3D Game or Engine with examples/demos which just work (compile) out of the box on linux ?
On Friday, 18 October 2019 at 05:52:19 UTC, Prokop Hapala wrote: Already >1 year I consider to move from C++ to Dlang or to Rust in my hobby game development (mostly based on physical simulations https://github.com/ProkopHapala/SimpleSimulationEngine). I probably prefer Dlang because it compiles much faster, and I can copy C/C++ code to it without much changes. [...] I cannot make any comment for others. But Dagon should work. I wrote a very little demo game some time ago https://github.com/aferust/dagon-shooter. I didn't try to compile and run it on Linux.I think you need to have a nuklear.so in your path, since Bindbc loaders try to load dynamic libraries by default.
