Le 12/11/2012 02:29, Walter Bright a écrit :
On 11/11/2012 10:59 AM, Sönke Ludwig wrote:
However, I have to admit that without actually trying it and seeing how
usable it is first hand, it's difficult to tell how usable it is in
practice (e.g. because D functions have to be explicitly tagged 'pure'
for the recovery to work).
With purity, transitive immutability, and transitive sharing, D already
is quite a long way down the road. But we can go further, as currently
new() and pure functions are not exploited for their implicit casting
ability.
For example,
struct S { int x; }
...
shared S* s = new S();
can be made to work, as can:
pure S* foo(S* s);
shared S* s = foo(new S());
I'm not convinced that adding a "unique" qualifier is strictly necessary.
Due to how delegate currently work, it isn't safe AT ALL. I've made a
thread about that already.
