On Tuesday 01 March 2011 23:43:27 Jonathan M Davis wrote:
> On Tuesday 01 March 2011 22:18:49 Bekenn wrote:
> > Code:
> > class MyException : Exception
> > {
> >
> > this(string message, string file, size_t line, Throwable next =
> > null)
> > {
> >
> > super(message, file, line, next);
> >
> > }
> >
> > this(string file = __FILE__, size_t line = __LINE__)(string
> > message,
> >
> > Throwable next = null)
> >
> > {
> >
> > this(message, file, line, next);
> >
> > }
> >
> > }
> >
> > void main()
> > {
> >
> > throw new MyException("Bluh!");
> >
> > }
> >
> > Error message:
> > test.d(8): Error: template test.MyException.__ctor(string file =
> >
> > __FILE__,size_t line = __LINE__) conflicts with constructor
> > test.MyException.this at test.d(3)
> >
> > If I remove the normal constructor and call super instead of this from
> >
> > the constructor template, then I get this slightly different error message:
> > test.d(1): Error: constructor test.MyException.this conflicts with
> >
> > template test.MyException.__ctor(string file = __FILE__,uint line =
> > __LINE__) at test.d(3)
> >
> > Is this a compiler bug, or am I Doing It Wrong?
>
> You cannot currently templatize class constructors:
>
> http://d.puremagic.com/issues/show_bug.cgi?id=435
>
> And currently if one overload of a function is templatized, _all_ overloads
> of that function must templatized:
>
> http://d.puremagic.com/issues/show_bug.cgi?id=2972
> http://d.puremagic.com/issues/show_bug.cgi?id=4749
I should also point out that there is absolutely no need to use template for
what you're trying to do. Just declare the constructor like so:
this(string message, string file = __FILE__, size_t line = __LINE__ Throwable
next = null) { ... }
- Jonathan M Davis
