El 05/02/2010 12:09 a.m., Emil Dotchevski escribió:
· I've often found the need to forward the result of some Boost.LA operation. To do so, I'm using types from the detail namespace to specify the return type. Until auto and decltype, and for C++03 support, a result_of namespace ala Boost.Fusion would be nice.
Good point. Can you elaborate on your needs to forward results from functions? Is it possible that the library is missing some important functions that you had to implement yourself?
Here is an example. I internally keep my vertices in arrays; in order to return them as vertex conforming types to the outside I have to do the following: boost::la::la_detail::vref_< T > get( int index ) { return boost::la::vref( ... ); } Ideally I would get ride of such `la_detail`, so I'm thinking something like: boost::la::result_of::vref< T >::type get( int index );
· Support for subscript operator may be introduced via vref/mref. So vref( any_conforming_vertex_type )[ I ] could be used for both direct indexing and swizzling (as mentioned at your blog).
Good idea. I wish this could be introduced non-intrusively though...
· Support for "complex swizzling expressions" would be nice. I've just made that name up, but I'm referring to things like 'v1[Y,-X]' or 'v1|(Y,-X)' (again, as mentioned at your blog).
Great idea. I wonder what other expressions would make sense, besides minus.
In my current project I use the library to generically work with any conforming vertex type, so I can't use the subscript operator since it would be optional. That's why I propose adding support for subscript operator via vref/mref. vref/mref would wrap the UDTs and implement the subscript operators, similar to what they currently do for arrays.
Finally, I'm not keen on the library name, but I don't have a better one to suggest.
I'm not keen on the library name either. I'm open for suggestions.
If no better name is found, I'd rather have the library named LinearAlgebra and the namespace `linear_algebra`. People can use namespace aliases to have `la` back if they want to. However, this name doesn't reflect either the statically sized nature of the elements it operates on. Agustín K-ballo Bergé.- http://talesofcpp.blogspot.com