Re: Singletons, alias this and DMD crashing

[Jacob Carlborg]

On 2013-05-09 15:07, Leandro Motta Barros wrote:

Thanks for the comment! I noticed this wouldn't compile, though I
haven't really wondered why so. My email was more about the compiler
bug than about using alias this with singletons.

Anyway, while trying to circumvent the compiler bug, I did this:

import std.stdio;

class SImpl
{
    void foo()
    {
       writeln("foo!");
    }

    private this() { }
}

class S
{
    static @property SImpl instance()
    {
       if (_i is null)
          _i = new SImpl();

       return _i;
    }

    static SImpl _i;

    alias instance this;
}

void main()
{
    S.foo();
}

This works and compiles with DMD 2.062. (I don't like to have
to write this additional code manually, but I'll try to make something
about it :-) )

Aha, you added an additional class.

--
/Jacob Carlborg