Re: [Boost-bugs] [Boost C++ Libraries] #4034: better vector/matrix assignment (or initialization)

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4034: better vector/matrix assignment (or initialization)
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-04-10 23:28:34

#4034: better vector/matrix assignment (or initialization)
------------------------------+---------------------------------------------
 Reporter:  guwi17            |       Owner:  guwi17      
     Type:  Patches           |      Status:  new         
Milestone:  To Be Determined  |   Component:  uBLAS       
  Version:  Boost 1.42.0      |    Severity:  Optimization
 Keywords:  assigment         |  
------------------------------+---------------------------------------------

Comment(by nasos_i@…):

 Based on the comments by Gunter
 (http://lists.boost.org/MailArchives/ublas/2010/03/4121.php)
 and David (http://lists.boost.org/MailArchives/ublas/2010/03/4123.php), I
 attach the new version of the assignment operator (assignment2.zip). The
 main differences with the previous are the following:

 1. Added a number of manipulators based on standard library concepts (like
 std::setprecision). Those allow for functionality like moving to the next
 row or column, moving to the begining of a row, etc.

 2. Changed the assigner overall design from tag dispatch based to policy
 based. I figured out that this allows for better extensibility.

 3. Added a fairly extensive number of unit tests (this takes some time to
 compile)

 4. Added benchmarks that show that the performance is equivalent to
 classical assignment even for small containers.

 5. Added a number of examples of how the assignment may be used in a
 variety of situations.

 6. Commented most of the code.

 7. Changed the operator from << to <<=, as I feel it is more
 representative of the work done by the assignment.

 Best regards

 Nasos

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4034#comment:4>
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