Re: [Boost-users] [boost][lexical_cast] simple example doesn't work with vector<T>

From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-04-07 15:03:57

AMDG

Ovanes Markarian wrote:
> Just an addition:
>
> Explicit specialization of std templates is legal. So if you _exactly_ 
> know vector types for which your <<-operator should work you can write:
>
> namespace std
> {
>   template<>
>   ostream& operator<< (ostream& os, const vector<MyTypeX>& v)
>   {
>     copy(v.begin(), v.end(), ostream_iterator<T>(os, ";"));
>     return os;
>   }
> }
>
> By the way there was a big discussion about this on std list and I 
> fluently read the upcoming Standard draft and saw that this paragraph 
> changed. I not any longer sure if this will be allowed with the new 
> standard.

There has to be template to specialize.  The std library doesn't have
an overload of operator<< that matches std vector.  Specialization
can't change that.

In Christ,
Steven Watanabe