Re: First time using Parallel

2021-12-26 Thread rikki cattermole via Digitalmars-d-learn
On 27/12/2021 12:10 AM, max haughton wrote: I would start by removing the use of stdout in your loop kernel - I'm not familiar with what you are calculating, but if you can basically have the (parallel) loop operate from (say) one array directly into another then you can get extremely good

Re: Double bracket "{{" for scoping static foreach is no longer part of D

2021-12-22 Thread rikki cattermole via Digitalmars-d-learn
Seems to be working just fine as of 2.098. ```d import std; void main() { static foreach(Foo; ["Abc", "def"]) {{ string str = Foo; writeln("Hello D ", str, __VERSION__); }} } ``` ``` Hello D Abc2098 Hello D def2098 ``` Anyway, AliasAssign has nothing to do with this.

Re: How to pass a class by (const) reference to C++

2021-12-15 Thread rikki cattermole via Digitalmars-d-learn
On 15/12/2021 11:54 PM, Jan wrote: On Wednesday, 15 December 2021 at 09:36:54 UTC, Jan wrote: Unfortunately it's the "annoying little details" that I immediately bumped into. Just another example: I just learned that linking against C++ DLLs is quite limited. I ran into the issue that

Re: d strings are the bane of my existance

2021-12-05 Thread rikki cattermole via Digitalmars-d-learn
The string is not the problem. ```d string ip_address = "192.168.1.1"; auto x = new InternetAddress(ip_address, 8008); ``` That works. A string in D is an alias for immutable(char)[]. This is defined in druntime (object.d). Immutable does cast to const implicitly, so a string argument to

Re: Dub says that there is an invalid semVer format, but I don't see how.

2021-11-19 Thread rikki cattermole via Digitalmars-d-learn
Don't use ~> for branches. alpha@DESKTOP-RB97SA4 /tmp/dutils $ dub build Invalid SemVer format: stable.0.0 alpha@DESKTOP-RB97SA4 /tmp/dutils $ nano dub.json alpha@DESKTOP-RB97SA4 /tmp/dutils $ dub build Performing "debug" build using C:\Tools\D\dmd_2.097.2\windows\bin\dmd.exe for

Re: Dub says that there is an invalid semVer format, but I don't see how.

2021-11-10 Thread rikki cattermole via Digitalmars-d-learn
On 11/11/2021 2:13 PM, Ruby The Roobster wrote: Branch ~master: Invalid SemVer format: testing.0.0 Branch ~testing: Invalid SemVer format: testing.0.0 Version 0.1.2: Invalid SemVer format: testing.0.0 testing is a branch. You are using ~>testing for it. To use a branch in the SEMVER is

Re: Crosscompile to Windows

2021-11-08 Thread rikki cattermole via Digitalmars-d-learn
On 09/11/2021 12:44 PM, Luis wrote: It should work with the last version of DMD : https://dlang.org/changelog/2.098.0.html#target It won't. https://github.com/dlang/dub/blob/master/source/dub/compilers/dmd.d#L111

Re: Crosscompile to Windows

2021-11-07 Thread rikki cattermole via Digitalmars-d-learn
On 08/11/2021 11:34 AM, Imperatorn wrote: On Sunday, 7 November 2021 at 22:19:08 UTC, russhy wrote: If i remember correctly, all you have to do is:     dub build --arch=x86_64-pc-windows-msvc --compiler=ldc2 Is this information on dub.pm? If not, we should add it.  This is compiler

Re: Average function using Variadic Functions method

2021-11-02 Thread rikki cattermole via Digitalmars-d-learn
You probably don't want to be using C variadics. Instead try the typed one: float mean(float[] input...) { // you don't want to divide by zero if (input.length == 0) return 0; float temp = 0; // floats and double initialize to NaN by default, not

Re: __cpuid like in C

2021-11-01 Thread rikki cattermole via Digitalmars-d-learn
I think you are wanting this? https://dlang.org/phobos/core_cpuid.html#.processor

Re: tkd does not build anymore after 2.096

2021-10-12 Thread rikki cattermole via Digitalmars-d-learn
The repo itself hasn't been archived as of this writing. So a PR may succeed. But yeah the guy is gone by the looks. If he is willing this could be a possible candidate for moving it to dlang-community although it'll need someone to shepherd it. https://github.com/nomad-software/tkd

Re: uint overflow behaviour

2021-09-15 Thread rikki cattermole via Digitalmars-d-learn
https://dlang.org/spec/expression.html#add_expressions "7. If both operands are of integral types and an overflow or underflow occurs in the computation, wrapping will happen. For example, uint.max + 1 == uint.min, uint.min - 1 == uint.max, int.max + 1 == int.min, and int.min - 1 == int.max."

Re: Development of the foundation of a programming language

2021-09-12 Thread rikki cattermole via Digitalmars-d-learn
On 13/09/2021 3:21 PM, leikang wrote: Are there any recommended books or videos to learn about the principles of compilation? What else should I learn besides the principles of compilation? The classic book on compilers that Walter recommends is the dragon book.

Re: DMD compiler - warning of unused variables

2021-08-16 Thread rikki cattermole via Digitalmars-d-learn
No. https://github.com/dlang-community/D-Scanner#implemented-checks

Re: What exactly are the String literrals in D and how they work?

2021-08-15 Thread rikki cattermole via Digitalmars-d-learn
On 15/08/2021 8:11 PM, rempas wrote: Still don't know what "pragma" does but thank you. pragma is a set of commands to the compiler that may be compiler specific. In the case of the msg command, it tells the compiler to output a message to stdout during compilation.

Re: Any UML generators for D code?

2021-08-12 Thread rikki cattermole via Digitalmars-d-learn
On 13/08/2021 9:40 AM, russhy wrote: also this but it's pretty old: https://github.com/rikkimax/Duml It was a neat idea duml of mine, but I wouldn't recommend going down the path of CTFE for this. Best to write a tool using dmd-fe instead.

Re: I do not understand copy constructors

2021-08-12 Thread rikki cattermole via Digitalmars-d-learn
On 12/08/2021 9:36 PM, Learner wrote: It seems that there is no easy way to transition from a postblit to a copy constructor, no? struct Foo { this(ref Foo other) { foreach(i, v; other.tupleof) this.tupleof[i] = v; } @disable

Re: seeking advice: possible new @attribute to mark class' default property to avoid alias this ?

2021-08-07 Thread rikki cattermole via Digitalmars-d-learn
So a field that will automatically be resolved to as part of the behavior of generated toString methods. That really isn't what alias this is used for commonly. I.e. struct ValueReference { private { SomethingElse* impl; } bool isNull() { return impl is

Re: Social chat in the forums

2021-08-01 Thread rikki cattermole via Digitalmars-d-learn
On 02/08/2021 9:19 AM, Brian Tiffin wrote: Question, or suggestion.  In the Community forums, there is General and Announce. Announce is only for announcements. General is used sometimes for OT stuff, like I've congratulated Andrei on the birth of one of his kids (I asked prior). Or some

Re: Two major problems with dub

2021-08-01 Thread rikki cattermole via Digitalmars-d-learn
On 02/08/2021 5:18 AM, Alain De Vos wrote: A simple and small wrapper around for instance the C-library libpq should be part of the language itself and should not pull in more than libpq itself. Just so that we are all using the same terminology. A binding defines the functions and types

Re: GREETINGS FROM iSTANBUL

2021-08-01 Thread rikki cattermole via Digitalmars-d-learn
It appears you are using the wrong lowercase character. https://en.wikipedia.org/wiki/Dotted_and_dotless_I From a quick experiment, it appears std.uni is treating the upper case dotted I's lower case as a grapheme. Which it probably shouldn't be as there is an actual character for that. We

Re: How to put an arbitrary string to clipboard in D?

2021-07-31 Thread rikki cattermole via Digitalmars-d-learn
On 01/08/2021 6:30 AM, tastyminerals wrote: So I thought there may be a way in D to communicate with the system clipboard... No, this requires a windowing library and yes a window to do it (depending on the windowing system and even the desktop environment).

Re: How to put an arbitrary string to clipboard in D?

2021-07-30 Thread rikki cattermole via Digitalmars-d-learn
On 31/07/2021 7:33 AM, tastyminerals wrote: I made a GUI app using tkd library. I am reading the string from one of the app widgets and would like to put it into the clipboard. Does anyone have an idea how to copy a string to the clipboard in D? copyText on a Text widget appears to do what

Re: enum true, or 1

2021-07-21 Thread rikki cattermole via Digitalmars-d-learn
On 22/07/2021 3:44 PM, Brian Tiffin wrote: What is the preferred syntax for simple on/off states?  Did I read that D was moving to strictly 1 and 0 literals instead of true/false on/off yes/no? This is the first time I'm hearing about it, so almost certainly no.

Re: Creating immutable arrays in @safe code

2021-07-17 Thread rikki cattermole via Digitalmars-d-learn
On 18/07/2021 12:56 AM, Dennis wrote: I don't know whether the spec or code is correct. Unless otherwise specified, the code is authoritative.

Re: Module import failing after $ dub add mypackage

2021-07-16 Thread rikki cattermole via Digitalmars-d-learn
On 17/07/2021 3:31 AM, Scotpip wrote: In dub.sdl I see: ```dependency "msgpack-d" version="~>1.0.3"``` In dub.selections.json I see: ``` { "fileVersion": 1, "versions": {     "msgpack-d": "1.0.3" } } ``` Okay, its been added to your dub project. So far so good. When I

Re: Documentation

2021-07-15 Thread rikki cattermole via Digitalmars-d-learn
Different doc generators, same source. DDOC (phobos) and DDOX (library). There is also adrdox[0] whose site does dub libraries also. [0] https://dpldocs.info/

Re: Where is "open" in "core.sys.linux.unistd"?

2021-07-09 Thread rikki cattermole via Digitalmars-d-learn
On 10/07/2021 2:51 AM, rempas wrote: The file can be found quickly [here](https://github.com/dlang/druntime/blob/master/src/core/sys/posix/unistd.d) or in your system if you want. Now the question is, why isn't there an "open" function for the equivalent system call? "close", "write", "read"

Re: Download a file into array (using std.net.curl.download)

2021-07-07 Thread rikki cattermole via Digitalmars-d-learn
On 07/07/2021 11:54 PM, z wrote: On Wednesday, 7 July 2021 at 10:27:47 UTC, notna wrote: On Windows: ``` ::> dmd curl_get.d ::> .\curl_get.exe object.Error@(0): Access Violation 0x0283CA66 0x0041DE8D 0x004023A2 0x00402308 0x00414D33 0x00414CAD 0x00414B48 0x0040D41F

Re: Unittests not firing?

2021-06-11 Thread rikki cattermole via Digitalmars-d-learn
rdmd -main -unittest file.d ```d import std.stdio; unittest { writeln("first"); } unittest { writeln("second"); assert(0); } ``` Output: ``` first second onlineapp.d(11): [unittest] unittest failure 1/1 modules FAILED unittests ``` The first assert to execute should kill the

Re: how to enable safeD ? dmd.conf ? dmd switch ?

2021-06-07 Thread rikki cattermole via Digitalmars-d-learn
On 08/06/2021 2:47 PM, someone wrote: https://dlang.org/articles/safed.html https://dlang.org/dmd-linux.html#switches http://ddili.org/ders/d.en/functions_more.html Neither man dmd nor man dmd.conf appear to have a related/switch setting. Does it means safeD is achieved by placing @safe

Re: Can rdmd (under Windows 10) use linker other than Optlink?

2021-05-14 Thread rikki cattermole via Digitalmars-d-learn
On 15/05/2021 9:42 AM, DLearner wrote: I am getting 'Error 42: Symbol Undefined' while testing some (fairly) complex imports. There was a reference in January to an Optlink bug that seemed like it could be responsible. If rdmd can use another linker (and one was recommended), I might be

Re: Thread local variables in betterC

2021-05-09 Thread rikki cattermole via Digitalmars-d-learn
On 10/05/2021 6:41 AM, Blatnik wrote: Do thread local variables work in -betterC? Or maybe it's better to ask are they _supposed_ to work in -betterC? No. It is tied to druntime. I.e. on Linux it calls __tls_get_addr to get the address.

Re: dlang opengl / gl / glu /glut library.

2021-04-21 Thread rikki cattermole via Digitalmars-d-learn
On 22/04/2021 7:51 AM, Alain De Vos wrote: import bindc.opengl; bindbc

Re: dub commands do not run correctly.

2021-04-10 Thread rikki cattermole via Digitalmars-d-learn
dub run dfmt -- ./app.d You passed "./app.d" to dub, not dfmt.

Re: dub commands do not run correctly.

2021-04-10 Thread rikki cattermole via Digitalmars-d-learn
On 10/04/2021 11:44 PM, Alain De Vos wrote: In order to run commands correctly I have to put soft links : I.e. dfmt -> /home/x/.dub/packages/dfmt-0.13.4/dfmt/bin/dfmt or, dscanner -> /home/x/.dub/packages/dscanner-0.11.0/dscanner/bin/dscanner Then ./dfmt or ./dscanner run fine. I use freebsd

Re: Extern/scope issue

2021-04-03 Thread rikki cattermole via Digitalmars-d-learn
On 04/04/2021 2:48 AM, DLearner wrote: On Saturday, 3 April 2021 at 13:38:25 UTC, rikki cattermole wrote: On 04/04/2021 2:34 AM, DLearner wrote: However, changing extern(C) to extern(D) causes linker failures. To me, that is bizarre. extern(D) sets the ABI AND mangling. D mangling

Re: Extern/scope issue

2021-04-03 Thread rikki cattermole via Digitalmars-d-learn
On 04/04/2021 2:34 AM, DLearner wrote: However, changing extern(C) to extern(D) causes linker failures. To me, that is bizarre. extern(D) sets the ABI AND mangling. D mangling incorporates things like the module name.

Re: Extern/scope issue

2021-04-03 Thread rikki cattermole via Digitalmars-d-learn
--- main.d module main; extern(C) __gshared int foo; import std; void main() { import foo : func; func; writeln(foo); } --- foo.d module foo; extern extern(C) __gshared int foo; void func() { foo++; } The __gshared is irrelevant to it working between modules, but it is

Re: Extern/scope issue

2021-04-03 Thread rikki cattermole via Digitalmars-d-learn
On 03/04/2021 11:17 PM, DLearner wrote: On Saturday, 3 April 2021 at 10:05:45 UTC, rikki cattermole wrote: On 03/04/2021 11:01 PM, DLearner wrote: [...] TLS variable with D mangling, not a c global.  [...] That is a regular variable. Setting the calling convention/mangling like that

Re: Extern/scope issue

2021-04-03 Thread rikki cattermole via Digitalmars-d-learn
On 03/04/2021 11:01 PM, DLearner wrote: 'Testmain' imports module 'testmod'. Both are shown below. I expected 1,1,2,2. I got 1,0,2,1 - which speaks to scope/extern misunderstanding Any ideas? Best regards Testmain: int xvar; TLS variable with D mangling, not a c global. import testmod;

Re: Deprecation message when assigning Nullable values to an associative array.

2021-04-03 Thread rikki cattermole via Digitalmars-d-learn
On 03/04/2021 10:58 PM, rikki cattermole wrote: Nullable has an alias this which has been deprecated. It is due for removal (the alias this). You can remove it manually from your copy of phobos source. Otherwise you'll just have to wait until it is removed upstream. (deprecation are not

Re: Deprecation message when assigning Nullable values to an associative array.

2021-04-03 Thread rikki cattermole via Digitalmars-d-learn
Nullable has an alias this which has been deprecated. It is due for removal (the alias this). You can remove it manually from your copy of phobos source. Otherwise you'll just have to wait until it is removed upstream. (deprecation are not errors, so you can ignore them).

Re: Check attribute against value

2021-04-02 Thread rikki cattermole via Digitalmars-d-learn
"Whether the attributes are values or types is up to the user, and whether later attributes accumulate or override earlier ones is also up to how the user interprets them." This doesn't explain it well, but you were adding types as attributes on to those symbols. Not struct instances.

Re: what exactly is string length?

2021-04-01 Thread rikki cattermole via Digitalmars-d-learn
On 02/04/2021 6:10 PM, Computermatronic wrote: On Friday, 2 April 2021 at 05:02:52 UTC, mw wrote: Ahh, I got what I see (from writeln) is not what get string here ;-) And I just tried: string t = text("head-", strip(s), "-tail"); It's the same behavior. So how can I trim the leading &

Re: what exactly is string length?

2021-04-01 Thread rikki cattermole via Digitalmars-d-learn
On 02/04/2021 5:51 PM, mw wrote: Then how can I construct `t`? to make this assertion true:    assert(t == "head-abc-tail");  // failed! Slice it. string t = text("head-", s[0 .. 3], "-tail"); http://ddili.org/ders/d.en/slices.html

Re: what exactly is string length?

2021-04-01 Thread rikki cattermole via Digitalmars-d-learn
On 02/04/2021 5:38 PM, mw wrote: On Friday, 2 April 2021 at 04:36:01 UTC, rikki cattermole wrote: On 02/04/2021 5:32 PM, mw wrote: --- import std; import std.conv : text; void main() {     char[6] s;     s = "abc";     writeln(s, s.length);  // abc6, ok it's the static array's length    

Re: what exactly is string length?

2021-04-01 Thread rikki cattermole via Digitalmars-d-learn
On 02/04/2021 5:32 PM, mw wrote: --- import std; import std.conv : text; void main() {    char[6] s;    s = "abc";    writeln(s, s.length);  // abc6, ok it's the static array's length    string t = text("head-", s, "-tail");    writeln(t, t.length);  // head-abc-tail16, why? assert(t[9]

Re: running a d compiler on the Mac Mini with an M1 chip

2021-03-26 Thread rikki cattermole via Digitalmars-d-learn
On 27/03/2021 10:51 AM, dan wrote: Are there any d compilers that run natively on the Mac Mini with an M1 chip? If so, does anybody here have any experience with them that can be shared? If not, and your machine is a mac mini, how would you go about programming in d on it? TIA for any

Re: can't link a code, is it a bug or my fault?

2021-03-11 Thread rikki cattermole via Digitalmars-d-learn
Try it with: -allinst It may just be deciding a template instance isn't required.

Re: Is it possible to suppress standard lib and dlang symbols in dylib (macos)

2021-03-11 Thread rikki cattermole via Digitalmars-d-learn
Pipe it to grep should work | grep -v "__D2"

Re: How to handle exceptions right?

2021-03-08 Thread rikki cattermole via Digitalmars-d-learn
https://github.com/dlang/phobos/blob/master/std/socket.d#L190 Might be of some use to you

Re: Unexpected threads observed before main()

2021-03-01 Thread rikki cattermole via Digitalmars-d-learn
On 01/03/2021 8:02 PM, Keivan Shah wrote: If possible, Can you also help me understand that why are the threads not despawned once the GC is done collecting in this example? There was a PR about this ages ago. But one thing to consider is that keeping threads around not doing anything

Re: Unexpected threads observed before main()

2021-02-28 Thread rikki cattermole via Digitalmars-d-learn
Do you still get them when you call your app like this? ./app --DRT-gcopt=parallel:0

Re: How can I make this work?

2021-02-28 Thread rikki cattermole via Digitalmars-d-learn
On 28/02/2021 11:05 PM, Max Haughton wrote: Do the windows APIs expect the length in memory rather than as a parameter? This sounds like its being sent via a user field to be passed to a callback. I.e. event loop for a window. In this sort of case you only get one parameter on the callback

Re: How can I make this work?

2021-02-28 Thread rikki cattermole via Digitalmars-d-learn
On 28/02/2021 8:05 PM, Jack wrote: int[] arr = [1, 2, 3]; size_t l = cast(size_t)arr.ptr; Okay, so far so good int[] a = cast(int[]) cast(void*) l; Umm, you haven't specified a length? int[] a = (cast(int*)l)[0 .. 3]; If the callback is being called (in effect under the current stack

Re: Class instance alignment

2021-02-20 Thread rikki cattermole via Digitalmars-d-learn
On 20/02/2021 8:13 PM, tsbockman wrote: Well, that's just another reason not to use the GC for my current project, then: I'm using 256-bit AVX vectors extensively. You can still use the GC. You just can't use it to allocate the classes you care about.

Re: Are there any containers that go with allocators?

2021-02-09 Thread rikki cattermole via Digitalmars-d-learn
https://github.com/dlang-community/containers It uses the older design for allocators (dependency).

Re: Minimize GC memory footprint

2021-02-06 Thread rikki cattermole via Digitalmars-d-learn
On 07/02/2021 4:22 AM, frame wrote: On Saturday, 6 February 2021 at 13:30:03 UTC, rikki cattermole wrote: Okay, its still seeing something is alive then. That's why I used the scope guard. I know it shouldn't have any effect but I want to give the GC an extra hint ;) The GC shouldn't be

Re: Minimize GC memory footprint

2021-02-06 Thread rikki cattermole via Digitalmars-d-learn
On 07/02/2021 12:38 AM, Siemargl wrote: On Saturday, 6 February 2021 at 11:20:18 UTC, Imperatorn wrote: On Saturday, 6 February 2021 at 09:42:38 UTC, rikki cattermole wrote: On 06/02/2021 3:32 PM, frame wrote:  [...] This won't do anything.  [...] Don't forget to stdout.flush; Otherwise

Re: Minimize GC memory footprint

2021-02-06 Thread rikki cattermole via Digitalmars-d-learn
On 06/02/2021 3:32 PM, frame wrote: On Friday, 5 February 2021 at 22:46:05 UTC, Bastiaan Veelo wrote: ?? Do you mean no collections happen? 32bit GC should just work. No, it doesn't - this code fails on memory allocation and works fine with -m64 switch: import std.stdio; import

Re: core.atomic for ldc.

2021-01-31 Thread rikki cattermole via Digitalmars-d-learn
The only difference between dmd, ldc and gdc (in effect) is the backend. While druntime and Phobos will be patched for other platform targets, over all its the same library. The same goes for core.atomic. You should not need to know that it has been patched. If you can call it and it gives

Re: Initializing D runtime and executing module and TLS ctors for D libraries

2021-01-27 Thread rikki cattermole via Digitalmars-d-learn
On 28/01/2021 1:16 PM, tsbockman wrote: The documentation build on dlang.org is broken. Check the source code or Adam D. Ruppe's dpldocs.info for the complete documentation: http://dpldocs.info/experimental-docs/core.thread.osthread.html Fixed: https://issues.dlang.org/show_bug.cgi?id=21309

Re: which free operating systems have a gtkd package?

2021-01-22 Thread rikki cattermole via Digitalmars-d-learn
https://d-apt.sourceforge.io/ Or you could use dub and not worry about where its installed. https://github.com/gtkd-developers/GtkD/wiki/Hello-World-Example-on-Ubuntu-19.10-(Linux)

Re: reference counting resources but NOT memory

2021-01-16 Thread rikki cattermole via Digitalmars-d-learn
What you are describing sounds like regular reference counting. All resources (i.e. windows) are pinned somewhere in memory. Its just that you have to use special API's to destroy them rather than free.

Re: How to debug D on Linux

2021-01-13 Thread Rikki Cattermole via Digitalmars-d-learn
On Wednesday, 13 January 2021 at 13:47:55 UTC, Roguish wrote: On Wednesday, 13 January 2021 at 13:30:48 UTC, Roguish wrote: Anything else I need to know when debugging on Linux, without an IDE? One specific question I have is: what's the difference between -g and -debug and -d-debug? From

Re: properly passing strings to functions? (C++ vs D)

2021-01-11 Thread rikki cattermole via Digitalmars-d-learn
On 12/01/2021 3:12 AM, zack wrote: A beginner question: How to pass strings properly to functions in D? Is there any allocation going on if just use a function as "myPrint"? In C++ I have often seen calls where one just passes a reference/const reference to a string to avoid allocation. C++:

Re: D string to C struct fixed-size array

2021-01-03 Thread rikki cattermole via Digitalmars-d-learn
Your definition of Image is probably wrong. You may have missed a pointer (8 bytes).

Re: D string to C struct fixed-size array

2021-01-03 Thread rikki cattermole via Digitalmars-d-learn
import std; void main() { int[] a = [1, 2, 3, 4, 5]; int[3] b; b[0 .. 3] = a[1 .. 4]; b.writeln; } Same principle, just remember to null terminate after slicing your dynamic array and assigning it to your static array.

Re: Range of dub package versions

2020-12-28 Thread rikki cattermole via Digitalmars-d-learn
$ dub upgrade https://dub.pm/commandline.html#upgrade dub.selections.json hasn't been deleted/upgraded so the versions would have gotten pinned to a known good state. Unless you change the version invalidating it, it most likely won't upgrade by itself.

Re: uncaught exceptions: stack trace truncated at NUL char

2020-12-13 Thread rikki cattermole via Digitalmars-d-learn
On 14/12/2020 9:56 AM, kdevel wrote: On Sunday, 13 December 2020 at 20:25:06 UTC, KapyoniK wrote: Is it really a bug ? \0 truncates the string, as mentionned on this page : https://en.wikipedia.org/wiki/Null-terminated_string I thought the D runtime is written in D (with D strings)?!?

Re: MonoTimeImpl!(ClockType.normal) failed to get the frequency of the system's monotonic clock.

2020-12-13 Thread rikki cattermole via Digitalmars-d-learn
Did you initialize the D runtime before you called the D code? (assuming C main).

Re: Why can I call a function with mismatched parameter type?

2020-12-11 Thread rikki cattermole via Digitalmars-d-learn
On 12/12/2020 12:32 AM, rikki cattermole wrote: Further, when the parameter name is not provided it will infer based upon what is passed in. In effect it is templated. What I meant was: the type is inferred if you only provide a single identifier in a parameter.

Re: Why can I call a function with mismatched parameter type?

2020-12-11 Thread rikki cattermole via Digitalmars-d-learn
string is not a built in type. It is an alias defined by druntime. https://github.com/dlang/druntime/blob/master/src/object.d#L35 int on the other hand is defined by the compiler. It understands it. Further, when the parameter name is not provided it will infer based upon what is passed in.

Re: Pass enum variable as const ref arg

2020-12-04 Thread rikki cattermole via Digitalmars-d-learn
On 05/12/2020 2:42 AM, Andrey wrote: Hm, you mean that enum variable is not a real variable? It is not a variable. It is a constant that cannot be changed and does not exist in the executable. I thought that to make CT variable you should mark it as enum (in c++ as constexpr). How to do

Re: Pass enum variable as const ref arg

2020-12-04 Thread rikki cattermole via Digitalmars-d-learn
On 05/12/2020 1:54 AM, Andrey wrote: Hello, void test(const ref string[3] qazzz) { qazzz.writeln; } void main() {     enum string[3] value = ["qwer", "ggg", "v"]; That is a compile time constant (remove the enum).     test(value); } Gives errors: onlineapp.d(26): Error: function

Re: Local libraries/packages with dub: How?

2020-11-30 Thread rikki cattermole via Digitalmars-d-learn
On 01/12/2020 7:39 PM, z wrote: On Tuesday, 1 December 2020 at 04:50:03 UTC, rikki cattermole wrote: ... What puzzles me is that the dependencies are indeed declared, but "dub describe" refuses to recognize the dependencies and "dub build" fails. "dub list" does recognize the root folder,

Re: Local libraries/packages with dub: How?

2020-11-30 Thread rikki cattermole via Digitalmars-d-learn
dub add-local, adds a directory as a known package that it can use as a dependency (or to be executed). You need to specify in the package that depends on the dependency what dependencies you have. I.e. See the dependencies key: { "name": "myproject", "description": "A

Re: why is "hello".writeln considered bad?

2020-11-20 Thread rikki cattermole via Digitalmars-d-learn
I was the person who wrote that example. It was just an example to show how it can be used. I would not write a function call like that when using a literal. As Mike said, its all up to personal preference.

Re: betterC question

2020-11-18 Thread rikki cattermole via Digitalmars-d-learn
On 19/11/2020 1:11 PM, Dibyendu Majumdar wrote: On Thursday, 19 November 2020 at 00:08:59 UTC, Adam D. Ruppe wrote: On Thursday, 19 November 2020 at 00:07:12 UTC, Dibyendu Majumdar wrote: int function() fp = test; This tries to *call* the function test and assign its return value to fp.

Re: toStringz lifetime

2020-11-08 Thread rikki cattermole via Digitalmars-d-learn
On 09/11/2020 2:58 PM, Ali Çehreli wrote: Does the D GC know the complete function call stack of the C program all the way up from 'main'? Is there the concept of "bottom of the stack" or does the D GC can only know the value of the stack pointer at the time rt_init() was called. If the

Re: Empty functions

2020-10-29 Thread rikki cattermole via Digitalmars-d-learn
On 29/10/2020 10:06 PM, Jan Hönig wrote: On Thursday, 29 October 2020 at 09:01:12 UTC, Jan Hönig wrote: This would mean, that this one should work as well. It does not work as I intended, as `() => {}` has not the return type of `void`. (I don't know how to print: `ReturnType!(() => {})`)

Re: Empty functions

2020-10-29 Thread rikki cattermole via Digitalmars-d-learn
(Params){ FunctionBody; } Rule: ref|opt ParameterWithMemberAttributes FunctionLiteralBody https://dlang.org/spec/expression.html#function_literals void function() Is a type https://dlang.org/spec/type.html#delegates () => {} Is actually: () => Expression Rule: ref|opt

Re: toStringz lifetime

2020-10-25 Thread rikki cattermole via Digitalmars-d-learn
On 25/10/2020 11:03 PM, Ali Çehreli wrote: Does the GC see that local variable 'name' that is on the C side? What I don't know is whether the GC is aware only of the stack frames of D functions or the entire thread, which would include the C caller's 'name'. The thread stack frame that is

Re: GC-less string formatting

2020-10-20 Thread rikki cattermole via Digitalmars-d-learn
https://dlang.org/phobos/std_format.html#formattedWrite Uses GC for exception (so cannot be @nogc yet), but otherwise it should be GC free.

Re: winapi, dll

2020-10-15 Thread rikki cattermole via Digitalmars-d-learn
On 16/10/2020 9:13 AM, Atmosfear wrote: I'm a newby. Can you show me an example? In which module is it? You can search for it on Github and it'll show up. https://github.com/dlang/druntime/search?q=QueryPerformanceCounter

Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking.

2020-10-02 Thread rikki cattermole via Digitalmars-d-learn
On 02/10/2020 9:33 PM, Imperatorn wrote: Did you create a D-partition just for D. Pro You can mount directories as a drive on Windows. https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/subst

Re: dub sub-projects

2020-09-20 Thread rikki cattermole via Digitalmars-d-learn
On 21/09/2020 6:24 AM, Vladimirs Nordholm wrote: I am unsure what the dub file would look like. I read that there is something called "subPackages", but in my mind I see them as dependencies. Is "subPackages" the right approach here? Yes but no. Normally all of these (what appear to be small

Re: Installing D on Fresh Windows 10 machine is a pain

2020-08-28 Thread rikki cattermole via Digitalmars-d-learn
On 28/08/2020 3:59 AM, Jesse Phillips wrote: DMD installer still is unable to find "VS installed" One of the reasons for this is that the environment variables have not been updated. You need to restart to do this.

Re: Could someone calrify reserving and collecting memory via the Garbabe Collector ?

2020-08-06 Thread rikki cattermole via Digitalmars-d-learn
On 07/08/2020 5:12 AM, wjoe wrote: There's core.memory.GC.reserve which requests memory from the OS. Basically pre-allocating memory for the GC heap. Is the GC heap shared among all threads ? That is up to the GC implementation. And is it correct that even if I call GC.disable, the GC may

Re: Template error with gdc-10 but not with latest dmd and ldc

2020-07-26 Thread rikki cattermole via Digitalmars-d-learn
Old frontend: Up to 2.060 : Failure with output: onlineapp.d(2): Error: valid attribute identifiers are @property, @safe, @trusted, @system, @disable not @nogc 2.061 to 2.065.0: Failure with output: - onlineapp.d(2): Error: user defined attributes cannot appear as postfixes

Re: Why is typeof(readln) -> void?

2020-07-18 Thread rikki cattermole via Digitalmars-d-learn
On 18/07/2020 9:14 PM, blizzard wrote: Can anybody explain the difference between readln() and readln? I read somewhere that the () were optional, so why this difference? The brackets are optional when calling a function. You are not calling a function if you wrap it in typeof. "The

Re: Calling a C function whose name is a D reserved word or keyword

2020-07-06 Thread rikki cattermole via Digitalmars-d-learn
https://dlang.org/spec/pragma.html#mangle pragma(mangle, "body") extern(C) void body_func();

Re: Translating C headers to D: How do I compile it?

2020-06-27 Thread rikki cattermole via Digitalmars-d-learn
On 28/06/2020 4:59 PM, Kirill wrote: module something; extern(C) int add(int a, int b); Compile as static library some.c, add to command line of dmd. Should be this simple more or less, depending on compilers and target involved.

Re: How to use base class & child class as parameter in one function ?

2020-05-22 Thread rikki cattermole via Digitalmars-d-learn
if (Child child = cast(Child)parent) { assert(child !is null); }

Re: any chance to get it working on windows xp?

2020-05-18 Thread rikki cattermole via Digitalmars-d-learn
On 19/05/2020 12:51 AM, a beginner wrote: @rikki cattermole Dmd and ldc's codegen haven't stood still for 10 years. They both will be emitting instructions your cpu cannot handle. Hence crashes. So... was I wrong to assume it generates code for the cpu it's running on (a P4 Northwood in my

Re: any chance to get it working on windows xp?

2020-05-17 Thread rikki cattermole via Digitalmars-d-learn
It isn't just about the OS. Dmd and ldc's codegen haven't stood still for 10 years. They both will be emitting instructions your cpu cannot handle. Hence crashes.

Re: Building Win32 application via dub

2020-04-29 Thread rikki cattermole via Digitalmars-d-learn
On 29/04/2020 10:27 PM, Sam E. wrote: To be honest, I haven't yet found the way to switch between -m32 and -m64 (or other) via dub :) $ dub build --arch=x86 $ dub build --arch=x86_64

Re: To get memory from another process.

2020-04-09 Thread rikki cattermole via Digitalmars-d-learn
On 10/04/2020 7:42 AM, Dennis wrote: On Thursday, 9 April 2020 at 19:27:16 UTC, Quantium wrote: I see this code imports drivers and does it depend on processor architecture? Would it work only on 64-bit or 32-bit or some special architechtures? kernel32.dll and psapi.dll should be present on

Re: Dub will not load bindbc-harfbuzz

2020-04-09 Thread rikki cattermole via Digitalmars-d-learn
How old is your build of dub? "betterC" build option was introduced in 1.20.0

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