I have a static class that generates unique ID's. The id's are hardcoded as ints.

I would like to make this extensible and allow for other integer numeric values to be(byte, ulong, etc...).

I can simply make the static class generic without issues.

The problem is the return type of the Get ID function, while generic, requires hardcoding the saved ID in a class.

e.g.,

class myclass {
   int ID;
}

while I want ID's type to be that of the uniqueID's type.

e.g.,

class myclass {
   auto ID = uniqueID!T.Get();
}

would make ID a type T (T is defined by the user and known at compile time). In another class one might use a different type.

Is anything like this possible? It is purely for convenience as I'm trying to avoid having to change the type at two or more places.

On Tuesday, 4 December 2012 at 16:34:50 UTC, js.mdnq wrote:
> class myclass {
>    int ID;
> }

Try something like this:

class myclass {
   typeof(uniqueID!T.Get()) ID;
   this() {
     ID = uniqueID!T.Get();
   }
}


The typeof(expr...) can be used anywhere a type can be used.

On Tuesday, 4 December 2012 at 16:42:21 UTC, Adam D. Ruppe wrote:
> On Tuesday, 4 December 2012 at 16:34:50 UTC, js.mdnq wrote:
>> class myclass {
>>   int ID;
>> }
>
> Try something like this:
>
> class myclass {
>    typeof(uniqueID!T.Get()) ID;
>    this() {
>      ID = uniqueID!T.Get();
>    }
> }
>
>
> The typeof(expr...) can be used anywhere a type can be used.

Cool, I'll try it but ran into one problem after making my class generic. Yours should work, thanks.