Subject: Re: [Boost-users] boost::any and const pointers
From: James C. Sutherland (James.Sutherland_at_[hidden])
Date: 2009-12-02 17:17:13
On Dec 2, 2009, at 3:03 PM, Steven Watanabe wrote:
> AMDG
>
> James C. Sutherland wrote:
>> Thank you!
>> That works great for pointers, but now not for POD, e.g.,
>> const int m = get<int>(p,"int");
>> Any ideas of how to get this to work with POD and pointers?
>>
>
> typename boost::mpl::eval_if<is_pointer<T>,
> boost::add_pointer<
> typename boost::add_const<
> typename boost::remove_pointer<T>::type
> >::type
> >,
> boost::add_const<T>
> >::type
>
> In Christ,
> Steven Watanabe
>
You can work magic! I suppose that I need to dig into MPL and the type_traits libraries in boost.
template< typename T >
typename boost::mpl::eval_if< boost::is_pointer<T>,
boost::add_pointer<
typename boost::add_const<
typename boost::remove_pointer<T>::type
>::type
>,
boost::add_const<T>
>::type
get( const Properties& p, const std::string name )
{ ... }
that did the job.