Re: [boost] [swap] End-user allowed to add overloads to boost namespace?

From: Niels Dekker - mail address until 2008-12-31 (nd_mail_address_valid_until_2008-12-31_at_[hidden])
Date: 2008-07-31 09:11:59

Joseph Gauterin wrote:
> Am I correct in thinking that it's permissible to provide a template
> specialization of a function in namespace std but not an overload?

Yes, you are.  :-)  According to both the current C++ Standard and the 
latest Working Draft.  The Draft 
www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2691.pdf says at 
17.4.3.1.1, Namespace std [namespace.std]:

  "The behavior of a C++ program is undefined if it adds declarations or 
definitions to namespace std or to a namespace within namespace std 
unless otherwise specified. A program may add a template specialization 
for any standard library template to namespace std only if the 
declaration depends on a user-defined type of external linkage and the 
specialization meets the standard library requirements for the original 
template."

Kind regards, Niels