Re: extern (C++) including bodies of member functions?

2016-07-15 Thread cy via Digitalmars-d-learn
On Friday, 15 July 2016 at 19:20:52 UTC, Jacob Carlborg wrote: Yes. Just as it's possible to call C function from D, it's possible to implement functions in D that can be called from C. This compatibility applies C++ and Objective-C as well. So, it applies to member functions too (for C++)? Ju

Re: Template args

2016-07-15 Thread Max Klimov via Digitalmars-d-learn
On Friday, 15 July 2016 at 23:07:20 UTC, Andrey wrote: Hi guys! Can any one tell me - how to pass an array of int's in to the template struct at compile-time, and how to use int there? Like this: https://dpaste.dzfl.pl/844057da81e9 ?

Template args

2016-07-15 Thread Andrey via Digitalmars-d-learn
Hi guys! Can any one tell me - how to pass an array of int's in to the template struct at compile-time, and how to use int there?

Iterate through getOverloads trait

2016-07-15 Thread Max Klimov via Digitalmars-d-learn
I'm wondering how I can use the output of __traits(getOverloads, a, "name"). The example in the doc uses direct indexing (like __traits(getOverloads, a, "name")[0](param)) and it works. But I'm struggling with iterating through the result or storing the resulting tuple into a local var. Exampl

Re: Variadic Tuple of Structs with Mixed Types

2016-07-15 Thread jmh530 via Digitalmars-d-learn
On Friday, 15 July 2016 at 17:41:21 UTC, Michael Coulombe wrote: Your issue is this line: alias boxAR(A) = Box!(A, R); This means that A must be a type, but you are trying to instantiate it with lambdas. If you switch to: alias boxAR(alias A) = Box!(A, R); But now you are back to the "loca

Re: extern (C++) including bodies of member functions?

2016-07-15 Thread Jacob Carlborg via Digitalmars-d-learn
On 2016-07-15 19:52, cy wrote: I would never (ever) do this myself, but trying to understand dmd, the code is absolutely packed with things like this: extern(C++) class Package : ScopeDSymbol { ... override const(char)* kind() const { return "package"; } ... override final inout(Pac

extern (C++) including bodies of member functions?

2016-07-15 Thread cy via Digitalmars-d-learn
I would never (ever) do this myself, but trying to understand dmd, the code is absolutely packed with things like this: extern(C++) class Package : ScopeDSymbol { ... override const(char)* kind() const { return "package"; } ... override final inout(Package) isPackage() inout {

Re: Variadic Tuple of Structs with Mixed Types

2016-07-15 Thread Michael Coulombe via Digitalmars-d-learn
On Friday, 15 July 2016 at 17:00:09 UTC, jmh530 wrote: I was working with the lightweight wrapper and it seemed to work for simple stuff, but then I started getting a bunch of errors when I tried to integrate it in to my project. Below is the stripped down version of what I've been working wi

Re: How to group similar member functions from different classes?

2016-07-15 Thread cy via Digitalmars-d-learn
On Monday, 20 June 2016 at 16:39:54 UTC, Marc Schütz wrote: Untested: Seems to only work if A and B are both defined in the same file as Foos (defeating the purpose). Putting A and B in a.d and b.d respectively gives me these errors: a.d(2): Error: undefined identifier 'Foos' a.d(2): Error:

Re: Variadic Tuple of Structs with Mixed Types

2016-07-15 Thread jmh530 via Digitalmars-d-learn
On Saturday, 9 July 2016 at 05:40:10 UTC, ag0aep6g wrote: On 07/09/2016 12:33 AM, jmh530 wrote: I'm trying to create a tuple of variadic length containing structs with mixed types. So for instance, given struct Foo(T, U) { T x; U y; } I want to create something like Tuple!(Foo!(type

Re: How define such scheleton classes

2016-07-15 Thread Kagamin via Digitalmars-d-learn
Use an intermediate class: abstract class OtherObject1(S) : AbstractObject!S { abstract void Foo(int a, int b); class OtherObject(S, bool R) : OtherObject1!S { int x; override void Foo(int a, int b)

Re: Are templates with variadic value parameters possible?

2016-07-15 Thread Mike Parker via Digitalmars-d-learn
On Friday, 15 July 2016 at 15:04:22 UTC, Devin Hill wrote: to the condition. It works pretty well! Granted, it doesn't allow for calling it in two ways like a variadic version would have: foo(1, 2, 3) // works with this setup foo([1, 2, 3]) // doesn't, but would only be occasionally usef

How define such scheleton classes

2016-07-15 Thread Learner via Digitalmars-d-learn
abstract class AbstractObject(S) if (IsSomeString!S) { } class OtherObject(S, bool R) : AbstractObject!S { int x; void Foo(int a, int b) { x = a + b; static if (R) // error { // more codes . } } } class OtherObjects(S) : AbstractObj

Re: LDC with ARM backend

2016-07-15 Thread Kai Nacke via Digitalmars-d-learn
Hi Claude! On Friday, 15 July 2016 at 14:09:40 UTC, Claude wrote: Hello, I would like to cross-compile a D program from a x86 machine to an ARM target. [...] So I'm a bit confused of what the current state of LDC+ARM is. For example, is the run-time fully ported on ARM/Linux? LDC is fully

Re: LDC with ARM backend

2016-07-15 Thread Claude via Digitalmars-d-learn
On Friday, 15 July 2016 at 15:02:15 UTC, Radu wrote: Hi, LDC on Linux ARM is fairly complete. I think it is a fully supported platform (all tests are passing). Check in https://wiki.dlang.org/Compilers the LDC column. This is the close for a tutorial for cross-compiling https://wiki.dlang.or

Re: Interior immutability and rvalues

2016-07-15 Thread ag0aep6g via Digitalmars-d-learn
On 07/15/2016 02:51 PM, maik klein wrote: Thanks I didn't know that you could have type qualifiers inside templates, D still surprises me sometimes. Qualifiers are part of the type. So wherever you can have a type, you can have a qualified type. I don't think it is practical to call move on

Re: Are templates with variadic value parameters possible?

2016-07-15 Thread Devin Hill via Digitalmars-d-learn
On Friday, 15 July 2016 at 05:23:15 UTC, Basile B. wrote: even better: template sameType(T...) { import std.meta; static if (!T.length) enum sameType = false; else enum sameType = NoDuplicates!T.length == 1; } Yeah, that's basically what I ended up doing, but since

Re: LDC with ARM backend

2016-07-15 Thread Radu via Digitalmars-d-learn
On Friday, 15 July 2016 at 14:09:40 UTC, Claude wrote: Hello, I would like to cross-compile a D program from a x86 machine to an ARM target. I work on GNU/Linux Ubuntu 64-bit. I have an ARM gcc toolchain, which I can use to make programs on an ARM Cortex-A9 architecture running a Linux kerne

LDC with ARM backend

2016-07-15 Thread Claude via Digitalmars-d-learn
Hello, I would like to cross-compile a D program from a x86 machine to an ARM target. I work on GNU/Linux Ubuntu 64-bit. I have an ARM gcc toolchain, which I can use to make programs on an ARM Cortex-A9 architecture running a Linux kernel 3.4.11+. I managed to build and install LLVM 3.8.1 w

Re: Interior immutability and rvalues

2016-07-15 Thread maik klein via Digitalmars-d-learn
On Friday, 15 July 2016 at 12:05:47 UTC, ag0aep6g wrote: On 07/15/2016 10:29 AM, maik klein wrote: [...] Sure. Just instantiate Rc with a const/immutable T. I.e., write `Rc!(const int)` instead of `const Rc!int`. Or with auto and makeRc: `auto rc = makeRc(immutable int(5));`. [...] When

Re: Result Types and void usage

2016-07-15 Thread nik via Digitalmars-d-learn
On Friday, 15 July 2016 at 11:36:27 UTC, ag0aep6g wrote: On 07/15/2016 10:11 AM, nik wrote: [...] [...] [...] void is somewhat special. It can't be used to declare variables or as a parameter type. So you'll have to approach this a bit differently. You also can't have a struct constructor

Re: Interior immutability and rvalues

2016-07-15 Thread ag0aep6g via Digitalmars-d-learn
On 07/15/2016 10:29 AM, maik klein wrote: There are two things that bothered me for quite some time Interior immutability: Consider a something like this https://dpaste.dzfl.pl/fa5be84d26bc The implementation is totally wrong and it doesn't make sense, but it shows that Rc can not be const/im

Re: unittests not being run

2016-07-15 Thread Bahman Movaqar via Digitalmars-d-learn
On 07/15/2016 04:16 PM, Jerry wrote: > Unittests have to be inside a module to be run on DMD atleast. > So putting module foo at top should fix it. Strange. Still not getting picked up. $ dmd --version DMD64 D Compiler v2.071.0 Copyright (c) 1999-2015 by Digital Mars written by Walte

Re: persistence, serialization, history (run-to-run) in small self-contained program

2016-07-15 Thread Jacob Carlborg via Digitalmars-d-learn
On 2016-07-15 04:17, dan wrote: Thanks Jacob! I was unaware of Orange. Available on Dub now as well: https://code.dlang.org/packages/orange -- /Jacob Carlborg

Re: unittests not being run

2016-07-15 Thread Jerry via Digitalmars-d-learn
Unittests have to be inside a module to be run on DMD atleast. So putting module foo at top should fix it.

Re: Bug? somearrayofclassinstances.filter(...).array fails because of .init() method in class

2016-07-15 Thread ag0aep6g via Digitalmars-d-learn
On 07/15/2016 12:54 PM, dom wrote: i just had a scenario like the one below. when calling .array on the filterresult dmd goes nuts because of the init() function in Players. Renaming to initialize() solved the problem. Solution: As .init is used for struct initialization and such (https://dlang.

Re: Result Types and void usage

2016-07-15 Thread ag0aep6g via Digitalmars-d-learn
On 07/15/2016 10:11 AM, nik wrote: One thing I cant figure out/don't know if is possible is to have a type that takes "void" (see last unittest) [...] Result type: struct Result(T, E) { this(inout T result) inout { _result = result; _is_result = true; } t

Re: Result Types and void usage

2016-07-15 Thread Jerry via Digitalmars-d-learn
On Friday, 15 July 2016 at 08:11:13 UTC, nik wrote: //unittest //{ // auto result_1 = Result!(void, string)(void); // auto result_2 = Result!(void, string)(void); // assert(result_1.is_result); // assert(result_1 == result_2); //} You wanted to handle the void case? Because

unittests not being run

2016-07-15 Thread Bahman Movaqar via Digitalmars-d-learn
The test I have in 'app.d' don't get picked up by 'dub test' in a freshly created project by 'dub init'. $ dub test Generating test runner configuration '__test__library__' for 'library' (library). Performing "unittest" build using dmd for x86_64. dplay ~master: building configurat

Bug? somearrayofclassinstances.filter(...).array fails because of .init() method in class

2016-07-15 Thread dom via Digitalmars-d-learn
i just had a scenario like the one below. when calling .array on the filterresult dmd goes nuts because of the init() function in Players. Renaming to initialize() solved the problem. Solution: As .init is used for struct initialization and such (https://dlang.org/spec/property.html#init) i th

Re: how to mark an extern function @nogc?

2016-07-15 Thread burjui via Digitalmars-d-learn
On Wednesday, 13 July 2016 at 02:20:58 UTC, anonymous wrote: On Tuesday, 12 July 2016 at 14:04:55 UTC, Seb wrote: D is entirely driven by highly motivated volunteers. (this will change soon with the new D foundation) With the fundation, volunteers wont be highly motivated anymore. Fundations

Re: Problems with -fPIC, libraries and exceptions (in linux?)

2016-07-15 Thread Arafel via Digitalmars-d-learn
Just as a follow-up, I think it's looking more and more like a compiler bug. It works properly both with gdc and ldmd2. Should I make a bug report about that?

Interior immutability and rvalues

2016-07-15 Thread maik klein via Digitalmars-d-learn
There are two things that bothered me for quite some time Interior immutability: Consider a something like this https://dpaste.dzfl.pl/fa5be84d26bc The implementation is totally wrong and it doesn't make sense, but it shows that Rc can not be const/immutable because at least "dup" needs to i

Result Types and void usage

2016-07-15 Thread nik via Digitalmars-d-learn
Hi all, I've been using D for a week now to compare it to Rust as a replacement to C++. One thing I miss from Rust is https://doc.rust-lang.org/std/result/ and its companion https://doc.rust-lang.org/std/macro.try!.html They make for some nice syntax so I had a go at recreating them in D (b