Re: [Quantlib-dev] Preliminary 0.9.0 tarballs - VC++ 2008 Express

[Dave C. <to....@gm...>]

Dominick Samperi <djsamperi <at> earthlink.net> writes:

> I commented out the friend part like this:
>         class Tracing : public Singleton<Tracing> {
> //            friend class Singleton<Tracing>;
>         private:
>             Tracing();
> 

I also ran into this problem before seeing this thread.  I worked around it by
explicitly specifying the Quantlib namespace for the Singleton<Tracing> class as
shown in the following diff:
$ bzr diff tracing.hpp
=== modified file 'QuantLib-0.9.0/ql/utilities/tracing.hpp'
--- QuantLib-0.9.0/ql/utilities/tracing.hpp     2008-02-03 22:41:13 +0000
+++ QuantLib-0.9.0/ql/utilities/tracing.hpp     2008-02-03 23:55:29 +0000
@@ -62,8 +62,8 @@

     namespace detail {

-        class Tracing : public Singleton<Tracing> {
-            friend class Singleton<Tracing>;
+               class Tracing : public QuantLib::Singleton<Tracing> {
+                       friend class QuantLib::Singleton<Tracing>;
         private:
             Tracing();
         public:


I think this preserves the exact meaning of the original code.

- Dave