Re: Interfacing D with C: Arrays and Functions (Arrays Part 2)
On 4/28/2020 9:12 AM, Seb wrote: // Internal Compiler Error: type int[] cannot be mapped to C++ There have been multiple attempts to fix this, the latest one is https://github.com/dlang/dmd/pull/8120. Now, that dmd comes with the (experimental) -H flag for C++ header generation, maybe there's more interest in making D arrays/strings work seamlessly between D and C++? They're never going to work seamlessly between D and C++ because C++ does not have a standard compatible type for it. We discussed this at length at DConf 2019.
Re: Interfacing D with C: Arrays and Functions (Arrays Part 2)
On 4/28/20 10:45 AM, Mike Parker wrote: I've finally gotten around to publishing the next article in my D and C series on the D blog. This is the second post about arrays, focusing on properly declaring in D functions from C that accept array parameters. The blog: https://dlang.org/blog/2020/04/28/interfacing-d-with-c-arrays-and-functions-arrays-part-two/ Reddit: https://www.reddit.com/r/programming/comments/g9o3wi/interfacing_d_with_c_arrays_and_functions_arrays/ HN: https://news.ycombinator.com/item?id=23007409 Nice! I was ready to respond with what turns out to be the punchline here -- using ref ;) That little bit of sorcery is an excellent trick that can make a world of difference when it comes to compiler-enforced correctness. -Steve
Re: Interfacing D with C: Arrays and Functions (Arrays Part 2)
On Tuesday, 28 April 2020 at 14:45:37 UTC, Mike Parker wrote:
I've finally gotten around to publishing the next article in my
D and C series on the D blog. This is the second post about
arrays, focusing on properly declaring in D functions from C
that accept array parameters.
The blog:
https://dlang.org/blog/2020/04/28/interfacing-d-with-c-arrays-and-functions-arrays-part-two/
Reddit:
https://www.reddit.com/r/programming/comments/g9o3wi/interfacing_d_with_c_arrays_and_functions_arrays/
HN:
https://news.ycombinator.com/item?id=23007409
Great article as always!
Maybe this article and conversation revives the interest in a
very much related area: array mangling still doesn't work for
extern(C++).
Example:
---
extern(C++) void foo(int[] arr);
void main()
{
foo([1, 2]);
}
---
// Internal Compiler Error: type int[] cannot be mapped to C++
There have been multiple attempts to fix this, the latest one is
https://github.com/dlang/dmd/pull/8120.
Now, that dmd comes with the (experimental) -H flag for C++
header generation, maybe there's more interest in making D
arrays/strings work seamlessly between D and C++?
Re: Interfacing D with C: Arrays and Functions (Arrays Part 2)
On Tuesday, 28 April 2020 at 15:26:49 UTC, David Gileadi wrote: Another great article! Nit: in the following paragraph, did you really mean to say *are*? But again, even D’s safety features are 100% foolproof when calling C functions from D. Thanks and thanks!
Re: Interfacing D with C: Arrays and Functions (Arrays Part 2)
On 4/28/20 7:45 AM, Mike Parker wrote: I've finally gotten around to publishing the next article in my D and C series on the D blog. This is the second post about arrays, focusing on properly declaring in D functions from C that accept array parameters. The blog: https://dlang.org/blog/2020/04/28/interfacing-d-with-c-arrays-and-functions-arrays-part-two/ .. Another great article! Nit: in the following paragraph, did you really mean to say *are*? But again, even D’s safety features are 100% foolproof when calling C functions from D.
Interfacing D with C: Arrays and Functions (Arrays Part 2)
I've finally gotten around to publishing the next article in my D and C series on the D blog. This is the second post about arrays, focusing on properly declaring in D functions from C that accept array parameters. The blog: https://dlang.org/blog/2020/04/28/interfacing-d-with-c-arrays-and-functions-arrays-part-two/ Reddit: https://www.reddit.com/r/programming/comments/g9o3wi/interfacing_d_with_c_arrays_and_functions_arrays/ HN: https://news.ycombinator.com/item?id=23007409
