On Sat, 12 Nov 2011 15:20:54 -0500, nrgyzer <nrgy...@gmail.com> wrote:

Hi guys,

is there any way to use shared members without casting them? Fox example:

class Example {

    private shared HashSet!(string) ex;

    ...

    this() {
        ex = cast(shared) new HashSet!(string)();
    }

    void write() {
        foreach (ref c; cast(HashSet!(string)) ex) {
            std.stdio.writeln(c);
        }
    }
}

Without casting, I always get some errors. My classes contains many different collections and values, so I've many casts which makes the code at some points a bit unclear. Is there any way to prevent the casting from/to shared objects?

The objects have to implement shared methods directly. From your sample code, I assume you are using dcollections.

I have not yet thought about how to tackle shared versions of containers. Certainly, your code is not a good way to do it, since you are not doing any synchronization.

The issue is, if a container is shared, you may only call shared methods on it. I have no shared methods in dcollections, because they would be simple wrappers for synchronizing the methods on the container. I would like to find an automatic way to do this rather than use boilerplate everywhere.

I also would like to investigate shared-aware containers that are safer to use (possibly lock-free) than simply synchronizing all methods.

-Steve

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