On 1/16/14 5:53 PM, Adam D. Ruppe wrote:
On Friday, 17 January 2014 at 01:42:38 UTC, Andrei Alexandrescu wrote:
    static Widget init = new Widget(42);

The problem here is if it is in a mutable data segment:

Widget i; // implicitly set to init
assert(i is Widget.init); // uh oh
i.mutate();

Widget i2; // set to widget init...
assert(i is i2); // oh dear
// i2 now reflects the mutation done above!

Yah, that would be expected.

I'm not necessarily against having the option, but I think it would
generally be more trouble than it is worth. If you have an object that
you want to guarantee is not null, make the nullable implementation

class Widget_impl {}

then define

alias Widget = NotNull!Widget_impl;

and force initialization that way.

Noted.


Andrei

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