Re: [boost] [Container] Non mandatory template parameter not defaulted

Subject: Re: [boost] [Container] Non mandatory template parameter not defaulted
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-02-25 18:25:39

AMDG

Mathieu - wrote:
> I was reading the boost.container vector sources, and I can't figure
> how this vector instantiations can work :
>
> boost::container::vector<int> foo;
>
> considering that the vector  definition looks like :
>
> template <typename T, typename A>
> vector;
>
> As the second template parameter A has no default type, I believe it's
> actually mandatory but it's not the case as this :
> boost::container::vector<Type> compiles fine.
>
> I've been reading through the whole source file but I can't find where
> the trick is. if anyone can enlighten me?
>   

The default parameters are in the declaration in container_forward.hpp

In Christ,
Steven Watanabe