On Thursday, 31 January 2013 at 12:28:00 UTC, d coder wrote:
On Thu, Jan 31, 2013 at 5:30 PM, monarch_dodra
<[email protected]> wrote:
The pull is kind of stuck in limbo, specifically because of
the problems
associated with implementing reference semantics with structs
:/
Thanks for the enlightening email.
I am of the considered view that reference semantics with
structs in D
is tough (if not impossible) with default constructor and
postblit
constructor (used when passing objects). This is because you
can not
initialize any object (wrapped in the struct) in the default
constructor and if you are passing the struct as a function
parameter,
it is not possible to initialize these internal objects (before
passing them) in the postblit constructor. I faced this in some
of my
code. Do not know if you are facing the same scenario in the
DList
implementation.
Are there any possible solutions in the pipe?
Regards
- Puneet
This keeps coming up, so I'll wrap up how it goes:
Conclusions:
* The language will not change.
* Use "static S opCall()" to emulate no-arg constructor
The conversation:
- "But opCall is not good enough: It's not a constructor"
- "But it's all you'll get"
If you want some history, specifically, you need to look for
"no-arg constructor".
