Re: [Boost-bugs] [Boost C++ Libraries] #4189: Add better support for non-default constructible function objects

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4189: Add better support for non-default constructible function objects
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-07-22 20:00:20

#4189: Add better support for non-default constructible function objects
-------------------------------+--------------------------------------------
  Reporter:  djwalker          |       Owner:  dave              
      Type:  Feature Requests  |      Status:  new               
 Milestone:  Boost 1.43.0      |   Component:  iterator          
   Version:  Boost 1.42.0      |    Severity:  Problem           
Resolution:                    |    Keywords:  transform_iterator
-------------------------------+--------------------------------------------

Comment (by dave):

 I'm concerned about the mandatory overhead implied by the use of
 boost::optional for transform iterators that may not need it.
 What about making a function object wrapper that adds default-
 constructibility?

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/4189#comment:2>
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