Re: [Boost-bugs] [Boost C++ Libraries] #3457: introduce move semantics to container types

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3457: introduce move semantics to container types
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-09-17 00:40:24

#3457: introduce move semantics to container types
------------------------------+---------------------------------------------
 Reporter:  guwi17            |       Owner:  guwi17      
     Type:  Feature Requests  |      Status:  new         
Milestone:  Boost 1.41.0      |   Component:  uBLAS       
  Version:  Boost 1.40.0      |    Severity:  Optimization
 Keywords:                    |  
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Comment(by nasos_i@…):

 Because for the bounded and c types, the move semantics don't have any
 effect, I think they should be disabled for now for those types, so that
 they don't promise something that they don't do.

 Also in the options.htm, I would propose the description to read:

 An immediate effect of this option is the elimination of the need for
 noalias in types <tt>vector&lt;T&gt;</tt> and
 <tt>matrix&lt;T&gt;</tt>, when assigned to the same type. This option
 doesn't have an effect on bounded and c types. Although it is rare, not
 all compilers support copy elision (that allows for move semantics), so a
 test must be performed to make sure that there is a benefit when it is
 enabled. A small demonstration and test can be found in
 test/manual/test_move_semantics.cpp

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3457#comment:3>
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