[Boost-bugs] [Boost C++ Libraries] #4280: Cannot get array type from boost::array

Subject: [Boost-bugs] [Boost C++ Libraries] #4280: Cannot get array type from boost::array
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-06-02 08:51:09

#4280: Cannot get array type from boost::array
--------------------------+-------------------------------------------------
 Reporter:  anonymous     |       Owner:  no-maintainer
     Type:  Bugs          |      Status:  new          
Milestone:  Boost 1.43.0  |   Component:  array        
  Version:  Boost 1.44.0  |    Severity:  Optimization 
 Keywords:                |  
--------------------------+-------------------------------------------------
 There is no function to get array from the boost::array.
 c_array returns pointer, and operator[] returns reference.

 There must be additional function, as_array.

 array<T, N>
 {
  typedef T array_type[N];

  array_type&       as_array()       { return elems; }
  array_type const& as_array() const { return elems; }

 }

 It is needed to allow optimizations when function has special overload for
 arrays.
 Like std::copy in VC compiler:

 1. copy(Input first, Input last, Output dest)
 2. copy(Input first, Input last, OutElem (&dest)[size])

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4280>
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