Re: Pyd updates
On Monday, 4 June 2018 at 01:17:31 UTC, Norm wrote: On Monday, 4 June 2018 at 00:53:26 UTC, ROB wrote: On Wednesday, 12 July 2006 at 23:35:55 UTC, Kirk McDonald wrote: [...] has there been any updates since July 2006 there does not seem to be any new msg's since unless you have forked this forum to a new location. if you have please provide I am new to D I have been learning python for some time and thought Python and D would work well together. Also are there any Projects using it yet I would like to get involved and contribute if possible. Try this repo: https://github.com/ariovistus/pyd https://github.com/ariovistus/pyd/wiki Sorry I meant to post this link for the wiki: https://wiki.dlang.org/Programming_in_D_for_Python_Programmers
Re: Pyd updates
On Monday, 4 June 2018 at 00:53:26 UTC, ROB wrote: On Wednesday, 12 July 2006 at 23:35:55 UTC, Kirk McDonald wrote: [...] has there been any updates since July 2006 there does not seem to be any new msg's since unless you have forked this forum to a new location. if you have please provide I am new to D I have been learning python for some time and thought Python and D would work well together. Also are there any Projects using it yet I would like to get involved and contribute if possible. Try this repo: https://github.com/ariovistus/pyd https://github.com/ariovistus/pyd/wiki
Re: Pyd updates
On Wednesday, 12 July 2006 at 23:35:55 UTC, Kirk McDonald wrote: If anyone's interested, I just did some fairly major refactoring of how Pyd wraps functions. I've essentially written my own tuple/metaprogramming library. (Well, at least a limited one.) I'm not sure if the new code is any shorter, but it is at least split into smaller, more easily read and reused chunks. And I do realize that the code is a bit of a mess in places (the tuples library could use some weed-whacking and documenting: http://dsource.org/projects/pyd/browser/trunk/infrastructure/pyd/tuples.d), but I'm not sure how motivated I am to reorganize it. :-) has there been any updates since July 2006 there does not seem to be any new msg's since unless you have forked this forum to a new location. if you have please provide I am new to D I have been learning python for some time and thought Python and D would work well together. Also are there any Projects using it yet I would like to get involved and contribute if possible.
Re: dub subpckages and how to depend on them internally
On Sunday, 3 June 2018 at 15:23:52 UTC, Jesse Phillips wrote: On Sunday, 3 June 2018 at 12:08:44 UTC, aliak wrote: The exact error for that setup is: source/app.d(4,9): Error: module `liba` is in file 'lib/liba.d' which cannot be read import path[0] = source/ import path[1] = ../lib/liba/source/ import path[2] = ../lib/libb/source/ import path[3] = /usr/local/opt/dmd/include/dlang/dmd Am I missing sourcePaths or something somewhere? This is a very complicated answer, so I made a pull request instead: https://github.com/aliak00/dub-subpackages/pull/1 lib/liba/source/suba corrected: lib/liba/source/liba/suba Ahhh, I see where I went wrong now. Thanks a lot for the help! And I like the extras you threw in there as well :D Cheers - Ali
Re: D on top of Hacker News!
On Sunday, 3 June 2018 at 16:58:23 UTC, Sameer Pradhan wrote: It was nice to read Walter's article from 2014... Wonder who posted it, and how long it will stay in the visibility range, but it was a nice feeling to see it at the top. -- Sameer Hi Sameer, I just discovered it today and posted it afterwards. Then, looked into this forum and surprise ;) . However, I don't plan on jumping into D right now because I'm starting to use Elixir/OTP seriously at GSoC and between that and the finals at uni there's little time left. Jakub
Re: D on top of Hacker News!
Is D really a top 20 language? I don't remember seeing it anywhere close to the top 20. https://www.tiobe.com/tiobe-index/ has them in 31 Top comment is kind of depressing.
D on top of Hacker News!
It was nice to read Walter's article from 2014... Wonder who posted it, and how long it will stay in the visibility range, but it was a nice feeling to see it at the top. -- Sameer
Re: Simple tutorials for complex subjects
On 04/06/2018 4:25 AM, Ethan wrote:
Step seven: In your receive function that takes a byte stream, put in a
switch statement that looks a little bit like the following:
switch( msg.GetID )
{
static foreach( Message; ServerMessages )
{
case ObjectIDOf!Message:
Message deserialised = msg.FromBinary!Message;
this.receive( deserialised );
}
default:
break;
}
Make that a final switch, that should generate better assembly.
Simple tutorials for complex subjects
Hey dlang community.
I've already been thinking in advance for DConf next year. If
things keep going well for me, I may not have anything I can
publicly talk about. So I've been thinking about what kind of
capacity I can contribute to the conference.
The easy way would be to raise my hand for volunteering to be MC.
I get good feedback about my humour and energy levels during my
talks, and translating that to an entire event means I could
probably relax for a change and not worry about making mistakes
in my talk/actually getting everything ready in time.
Another thing that's becoming apparent though is that there needs
to be more widely-available, simple to understand tutorials for
the kind of work I do. There's Andrei's book, which is the first
stop shop. And then there's Adam's D Cookbook. But I can't think
of much else.
So. Being the kind of programming communist I am, I write
something cool and think "I need to talk about this." Hence the
posts I've made in here lately. But it also got me thinking.
Maybe these kind of posts would make a great DConf talk. Or a
website. Or whatever, I'm only coming in to this with the
mentality of DConf next year.
This is something I've emailed to friends/posted to Facebook (but
slightly sanitised so that the troll from Melbourne hiding behind
a Tor connection won't derail the thread with "sex talk"
complaints). It discusses stuff at a high level, with only a
handful of specific examples. And I can go in to details. But
keeping things understandable at a high level and using a bit of
humour at the same time goes a very long way in my experience.
So if stuff like the following, but presented for a proper
audience, seems like it'll be valuable, I'll add all these
examples I'm writing to a presentation as I go throughout the
year and submit that for my talk when the time comes.
===
I've been writing a client/server architecture. In D.
And I harp on about D, I know. But wow is it making things easy.
The kind of programming paradigms I'm using to get it down to
"simple as pie usability" aren't widely known outside of the D
community's best and brightest. But knowing what the language is
capable of, I can just go ahead and do it and it works.
So you're a client and a server. Which means you're going to want
to send and receive messages to each other. How would you do this
in C++? Maybe an enum for message type so you can switch on it?
Then some way of casting the data from the bytestream? And what
about variable length messages? So rather than cast you need a
proper deserialisation. Just send everything as JSON? Yeah,
goodbye network bandwidth, but at least you don't have to mess
around with binary.
The only method there that is low-maintenance for futureproofing
is the JSON method I mentioned. And many people will stop there
and be happy. But I'm not stopping there. I'm writing a gaming
middleware, which implicitly means there's going to be large
quantities of data I'll need to deal with.
So, how do you make maintenance a breeze when you write such a
system from scratch?
Step one: All your messages are structs. "Value types" for you
modern programmers.
Step two: Apply a user-defined attribute to your struct. I have
ClientMsg for messages sent by the client, and ServerMsg for
messages sent by the server. What if both client and server send
the message?
@ClientMsg @ServerMsg struct Ping { }
Done.
Step three: Collect all messages from the message modules and
stick them in a tuple. No need to register your message. It's
done for you.
Step four: Filter that tuple out in to separate client and server
message tuples.
Step five: Write a template that generates a size_t that hashes
together the names of all members of any given message. This has
the built-in benefit of loosely versioning your structures. And
thanks to CTFE and collecting all message types earlier, we can
check at compile time for hash collisions.
Step six: Serialisation of your structures starts out by sticking
that size_t in a buffer, and then parsing each member of your
struct and either copying in to the buffer directly or specifying
a length before copying N elements from the array you've
encountered. Deserialisation works in the exact opposite manner.
Step seven: In your receive function that takes a byte stream,
put in a switch statement that looks a little bit like the
following:
switch( msg.GetID )
{
static foreach( Message; ServerMessages )
{
case ObjectIDOf!Message:
Message deserialised = msg.FromBinary!Message;
this.receive( deserialised );
}
default:
break;
}
Yes, we basically generate at compile time an entire switch
statement from structures. This currently will generate a fairly
inefficient jump table, but you know, we can add an indexing
declarator to that foreach statement and let the compiler
optimise down to a proper jump table with a little bit more
effo
Re: dub subpckages and how to depend on them internally
On Sunday, 3 June 2018 at 12:08:44 UTC, aliak wrote: The exact error for that setup is: source/app.d(4,9): Error: module `liba` is in file 'lib/liba.d' which cannot be read import path[0] = source/ import path[1] = ../lib/liba/source/ import path[2] = ../lib/libb/source/ import path[3] = /usr/local/opt/dmd/include/dlang/dmd Am I missing sourcePaths or something somewhere? This is a very complicated answer, so I made a pull request instead: https://github.com/aliak00/dub-subpackages/pull/1 lib/liba/source/suba corrected: lib/liba/source/liba/suba
Re: Installation on Ubuntu 18.04 is broken
On Saturday, 2 June 2018 at 00:30:09 UTC, Norm wrote: Get a new distro. Which other major language doesn't work on Ubuntu?
Re: Installation on Ubuntu 18.04 is broken
On Saturday, 2 June 2018 at 00:11:58 UTC, Seb wrote: The bug you referenced has long been fixed and is part of 2.080.0 I guess my computer was trolling me then, because it didn't work. Please do report a bug with instructions on how to reproduce if you are still experiencing problems. As I wrote in the post that followed, it worked after I uninstalled, installed an additional package, and reinstalled.
Re: dub subpckages and how to depend on them internally
On Thursday, 31 May 2018 at 20:01:43 UTC, Jesse Phillips wrote: On Thursday, 31 May 2018 at 17:56:57 UTC, aliak wrote: root |-- sub1/source |-- sub2/source Do that. You can have a top level source folder, but this is going to be code separate from your subpackage. The subpackage can depend on this top-level project, or the top-level project can depend on the subpackage. Ok I tried this as well, but I still get a module `sub1` is in file 'lib/sub1.d' which cannot be read I put up a GH test project with exactly what I'm doing. https://github.com/aliak00/dub-subpackages. There's a "lib" project that has subpackages "liba" and "libb" and there's a test application that tries to use the subpackages in different ways. The exact error for that setup is: source/app.d(4,9): Error: module `liba` is in file 'lib/liba.d' which cannot be read import path[0] = source/ import path[1] = ../lib/liba/source/ import path[2] = ../lib/libb/source/ import path[3] = /usr/local/opt/dmd/include/dlang/dmd Am I missing sourcePaths or something somewhere?
Re: stride in slices
On Sunday, 3 June 2018 at 07:30:56 UTC, Meta wrote: On Saturday, 2 June 2018 at 18:49:51 UTC, DigitalDesigns wrote: Proposal: [a..b;m] m is the stride, if ; is not a good char then |, :, !, or # could be good chars. This is exactly what std.range.stride does. The syntax [a..b;m] directly translates to [a..b].stride(m). So, can I do X[a..b].stride(m) = 0; ? Just curious because if it is exactly the same notion then I should be able to do it, right? Of course, I'm sure another hoop could be created to jump through and it will work, will it still be exactly the same though? If there is an efficient and optimal setting so one could get the same effect, then I guess it might be a direct translation. If not then it isn't. What I am looking for is a sort of zeromemory or memset with stride. It should not allocate a new array or be significantly slower. I'd like some proof that they are "equivalent" such as a disassembly or a profiling... just to satisfy my own skepticism.
Re: stride in slices
On Sunday, 3 June 2018 at 07:30:56 UTC, Meta wrote: On Saturday, 2 June 2018 at 18:49:51 UTC, DigitalDesigns wrote: Proposal: [a..b;m] m is the stride, if ; is not a good char then |, :, !, or # could be good chars. This is exactly what std.range.stride does. The syntax [a..b;m] directly translates to [a..b].stride(m). We even have slide which is a generalization of stride (striding is sliding with a window size of 1): [a..b].slide(1, m) https://dlang.org/phobos/std_range.html#slide
Re: stride in slices
On Saturday, 2 June 2018 at 18:49:51 UTC, DigitalDesigns wrote: Proposal: [a..b;m] m is the stride, if ; is not a good char then |, :, !, or # could be good chars. This is exactly what std.range.stride does. The syntax [a..b;m] directly translates to [a..b].stride(m).
