Re: [Boost-users] [variant] ideas needed

From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-02-21 15:07:39

AMDG

Olaf Peter wrote:
> Hi Steven,
>
> the problem is related to the static_visitor, e.g. (from docs):
>
>
>   boost::variant< int, std::string > u;
> ...
>
> class my_visitor : public boost::static_visitor<int> {
> public:
>      int operator()(int i) const
>      {return i;}
>
>      int operator()(const std::string & str) const
>      {return str.length(); }
> };
>
> same for static_visitor<> etc. BUT static_visitor<bool>:
>
> <snip>
>
> is binary! I've got compilation errors due to.
>   

apply_visitor can handle two arguments:

apply_visitor(are_strict_equals(), v1, v2)

In Christ,
Steven Watanabe