Re: [Boost-users] Weird compilation error when using boost::geometry

Subject: Re: [Boost-users] Weird compilation error when using boost::geometry
From: Adam Wulkiewicz (adam.wulkiewicz_at_[hidden])
Date: 2017-11-15 11:28:18

Hi Jeremy,

Jeremy Murphy wrote:
> is there any other way around/through this? I am working with a point 
> geometry with the same issue: the template type for dimensions is 
> 'int' and it would be a lot of hassle to change it.
>

The type in trait specialization has to be specified correctly. So 
assuming that you don't want to change the geometry template you should 
change the specialization, like this:

 Â Â Â  template<typename T, *int*tDimension = 2>
 Â Â Â  class Point {};

 Â Â Â  // ...

 Â Â Â  template<typename Type, *int*tDimension>
 Â Â Â  struct tag<Point<Type, tDimension>> {
 Â Â Â  Â Â Â  typedef point_tag type;
 Â Â Â  };

Adam

>
> On 4 October 2015 at 04:16, Adam Wulkiewicz <adam.wulkiewicz_at_[hidden] 
> <mailto:adam.wulkiewicz_at_[hidden]>> wrote:
>
>     Hi,
>
>     2015-09-19 8:08 GMT+02:00 é‚“å°§ <torshie_at_[hidden]
>     <mailto:torshie_at_[hidden]>>:
>
>
>
>                 template<typename T, *int* tDimension = 2>
>
>                 class Point {
>
>
>     <snip>
>
>
>                 template<typename Type, *std::size_t* tDimension>
>
>                 struct tag<::raptor::Point<Type, tDimension>> {
>
>                 typedef point_tag type;
>
>                 };
>
>
>
>     Different integral types are used for tDimension in Point class
>     and traits specializations, after changing e.g. int to std::size_t
>     in Point class the code compiles.
>
>     Regards,
>     Adam
>
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