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Re: Migration from GCC3.4.3 to GCC4.1.2


Hi Eljay,

I'll go for implicit template instantiation.
If I use vague linkage it again throws errors.
Can you suggest the same for the above piece of code if am not boring you.
-ruks

John (Eljay) Love-Jensen wrote:
> 
> Hi ruks,
> 
> If you are going to rely on explicit template instantiation, you have to
> be
> meticulous about instantiating all the templates that are referenced.  And
> you have to have a deep knowledge about the template mechanism (which* is
> a
> an obtuse, convoluted, and confusing code generation language built into
> C++
> -- but x1000 better than the C preprocessor).
> 
> Otherwise, in my opinion, it is best to rely on implicit template
> instantiation and vague linkage instead.
> 
> I am not a C++ template guru.  I know enough about them to use them
> effectively, and I can (albeit poorly, in retrospect) write them -- but
> there are so many agonizing subtleties and mindboggling nuances and
> t's-to-cross and i's-to-dot that I leave the fine art of template crafting
> to the smart++ folks at Boost <http://www.boost.org/>.
> 
> Sincerely,
> --Eljay
> 
> * in my not-so-humble opinion.  IÂm comparing / contrasting C++ template
> facilities with DÂs code generation mechanism, in particular.  It is as-if
> C++ template mechanism was not designed as a code generation language, and
> only was realized that it is one long after the fact, and way too late to
> redesign it.
> 
> "What 99 percent of programmers need to know is not how to build
> components,
> but how to use them."
> ~ Alexander Stepanov
> 
> 
> 

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