Re: books for learning D
On Monday, 13 January 2020 at 10:28:48 UTC, mark wrote: I'm just starting out learning D. Andrei Alexandrescu's "The D Programming Language" is 10 years old, so is it still worth getting? (I don't know how much D has changed in 10 years.) I found the book amazing. It not only explains the language, but also how things work behind the scenes. For a book on programming languages it's written in an entertaining style. It's also a joy to see how beautiful the design of D is, compared to languages like C++ or C#. But... The book is definitely not written for beginners. You should at least have a good understanding of C (Especially the concept of pointers). Even though the chapter on pointers is only 2 pages long, the word "pointer" occurs 155 times in the book (I made a quick search over my ebook version).
Re: Win32 Api: How create Open/"Save as" Dialog?
On Friday, 10 January 2020 at 14:48:49 UTC, Marcone wrote: How create "Open" and "Save as" Dialog using "Win32 Api" and Dlang? Please send me a simple example code in Dlang. Thank you very much. Have a look at this website: http://www.winprog.org/tutorial/app_two.html It helped me a lot when i once made a simple gui in C. The tutorial is in C, but Win32 Api is C anyway... Most of the examples will probably just compile in D. Win32 Api is really ugly, i think it's a better investment to learn something like GtkD ;)
Re: matrix operations
On Wednesday, 27 November 2019 at 16:35:40 UTC, bachmeier wrote: I do have all that for my own use. I've never bothered to turn it into something others could use because I love the garbage collector, but that's a turnoff for others. But I'm more than happy to share if you're really interested. I'm also working on an R -> D compiler, but it's not helpful at this point. I would actually like it to be garbage collected, because i would use it for some skripts instead of matlab. Matlab is really horrible, but if you want to do something quick, e.g. analyse sensor data, you have everything you need in an easy to use interface. I think D could really shine in this area... It wouldn't take much to create a simple wrapper over mir/lubeck to do operator overloading. This is low-hanging fruit for someone that wants to contribute to the language. Until I win the lottery, I won't have time to do it myself. Yeah, i thought about that also... Is there any good article about mir/ndslice beside the documentation? I mean something more abstract, like a general overview.
matrix operations
Hi, I'm looking for some basic matrix/vector operations and other numeric stuff. I spent quite a lot time in reading through the mir documentation, but i kinda miss the bigger picture. I'm not a Python user btw. (I know C,C++,C#,Matlab..). I have also looked at the documentation of the lubeck package. What i have seen right now reminds me of the saying "Real programmers can write FORTRAN in any language". Is there a type to do matrix operations with nice syntax (e.g. using * operator for multiplication)?
Re: Phobos License question
On Saturday, 16 November 2019 at 10:02:58 UTC, Ola Fosheim Grøstad wrote: As a matter of courtesy I would have added a notice on the top of the file that says that function x, y, z was lifted from such and such library with a "see comments for details" notice. I will add this comment at the top the file also: /* The functions auto dual(R)(const R re), auto dual(R, D)(const R re, const D du), string toString() const, void toString(Writer, Char)(scope Writer w, scope const ref FormatSpec!Char formatSpec) const and the corresponding unittests are derived from phobos std.complex (github.com/dlang/phobos/blob/master/std/complex.d). See comments for more details */ Anyone who thinks i go to jail for this, please tell me now ;)
Re: Phobos License question
On Saturday, 16 November 2019 at 10:02:58 UTC, Ola Fosheim Grøstad wrote: On Saturday, 16 November 2019 at 09:21:41 UTC, René Heldmaier wrote: Thanks a lot for the lengthy reply ;). I live in Germany by the way... statement "Copyright 2019, My Name" is incomplete though. It would be better to state "Copyright 2019, My Name and others (see individual files)". I'll do that. Should i do it the same way for authors on module level? e.g Authors: René Heldmaier and others (see individual files) Just follow the license to the letter… Copy in the code you build on and modify it in place. You ought to be able to add your own code above or below it, just mark the boundaries with comments. You can also modify the code of course, then just add your name to the list of authors. My plan is now to put this comment above each copied function: /* The following function is derived from phobos std.complex https://github.com/dlang/phobos/blob/master/std/complex.d Authors: Lars Tandle Kyllingstad, Don Clugston Copyright: Copyright (c) 2010, Lars T. Kyllingstad. License: $(HTTP boost.org/LICENSE_1_0.txt, Boost License 1.0) Modified by: René Heldmaier */ You think that's ok?
Phobos License question
Hi, I'm currently implementing a data type which is quite similar to complex numbers. Because of the similarity, I could copy paste (with minor modifications) the toString methods and the helper functions from std.complex. The much bigger rest of it is my own work. I would like to publish this under Boost License 1.0. Do i have to list the authors of std.complex as authors of the module? Or should i list the authors in the commentary above the copied functions? What happens to copyright? Can I publish it under "Copyright 2019, My Name" or do i have to use the copyright from std.complex? I'm not a lawyer and i don't like to deal with this kind of stuff. I just want that people are able to use it without implications
Re: Understand signature of opOpAssign in std/complex.d
On Saturday, 9 November 2019 at 13:26:12 UTC, Adam D. Ruppe wrote: That's checking the if the template argument C is a case of Complex!R, while at the same time declaring a symbol R to hold the inner type. I got it. Thank you very much ;)
Understand signature of opOpAssign in std/complex.d
Hi, i'm currently implementing a dual number datatype. Dual numbers are very similar to complex numbers, but instead i (i^2 = -1) you have epsilon (epsilon^2 = 0). This sounds strange but it is really useful for something called "automatic derivation". I will probably explain it in more detail when i'm ready to publish it as a dub package... Because of the similarity to complex numbers i looked at how they are implemented in std/complex.d, to learn from how it is done there. I came across a function signature which i don't understand: ref Complex opOpAssign(string op, C)(const C z) if ((op == "+" || op == "-") && is(C R == Complex!R)) The part i don't understand is "is(C R == Complex!R)". What does that mean?
