On 9/29/2018 9:34 PM, Manu wrote:
Who knows about DIP 1014? (struct move hook)
Is it well received? Is it likely to be accepted soon?
I'm working on the std::string binding, it's almost finished... but
then I hit a brick wall.
GNU's std::string implementation stores an interior pointer! >_<
The rationale behind D allowing structs to be moveable is to enable a copying
garbage collector.
Some solutions to this problem:
1. Don't allow moving of C++ structs
2. Add a struct attribute that means "not moveable"
3. DIP 1014, which is add a __move_post_blit() function (most complex solution)
4. Use copy/destruct for C++ structs that have copy constructors (this is the
old C++ solution, and is less efficient than the move constructor)
A discussion of the rationale for the C++ move constructor is:
https://akrzemi1.wordpress.com/2011/08/11/move-constructor/
> Anyway, I'm blocked until this DIP is accepted; so, is it looking promising?
Pragmatically, I suggest for the moment just ignore the problem, file a bug
report for std::string, and move on.
