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From: Peter Dimov (pdimov_at_[hidden])
Date: 2007-03-22 20:33:43

Anthony Williams wrote:

> If you define a C API, and people stick to it, then it doesn't matter
> what you use internally: you can ship a .LIB file or .DLL with just
> that API exposed, and Bob's your uncle. If you want to use a
> templated API, you just can. You can even provide the necessary
> specializations of the templates as part of the library, and declare
> them as explicit specializations in the headers.

Case A, call_once implemented in the header. You ship an improved
call_once.hpp. User program needs recompilation to take advantage of the

Case B, call_once a thin wrapper over a C API, as in N2178. You ship an
improved .lib/.dll. User program doesn't need recompilation (lib) or relink

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