Re: [Boost-users] mpl::transform<...> --- compile error: is not derived from type

Subject: Re: [Boost-users] mpl::transform<...> --- compile error: is not derived from type
From: e r (erwann.rogard_at_[hidden])
Date: 2008-09-08 23:37:17

Steven Watanabe wrote:
> AMDG
> 
> e r wrote:
>>> and also, although the second version compiles, i have
>>>
>>>     BOOST_MPL_ASSERT( (
>>>             is_same<
>>>                 id_range::type,
>>>                 mpl::vector< mpl::int_<1>, mpl::int_<2>, mpl::int_<3> >
>>>             >
>>>     ) );
>>>
>>> causes,
>>>
>>> <snip>
>>>     
> 
> Two boost::mpl::vectors that contain the same elements are not
> guaranteed to
> be the same type.  If you boost::mpl::equal, it ought to work.
> 
>    BOOST_MPL_ASSERT( (
>            boost::mpl::equal<
>                id_range::type,
>                mpl::vector< mpl::int_<1>, mpl::int_<2>, mpl::int_<3> >
>            >
>    ) );
> 
> In Christ,
> Steven Watanabe

Got it, thanks. And also, I should add that range_c<int,1,3> represent
[1,3) ,not [1,3].