Bugs item #1239906, was opened at 2005-07-17 16:15 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1239906&group_i... Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Daryle L. Walker (dlwalker) Assigned to: Nobody/Anonymous (nobody) Summary: no Boolean conversion for boost::rational Initial Comment: The boost::rational class template, in header file <boost/ rational.hpp>, does not support conversion to a Boolean value. It does have an "operator !" defined, though. It is a surprise for a type to have one of these operations but not the other. Currently code like "if ( !r )" works but not "if ( r )", which should be expected. A solution is to add a conversion operator to a type that can be used in Boolean contexts, but as little else as possible. A suggestion is to use a pointer-to-member (to data or function) type that is unique to each version of boost::rational, where the exact values are private. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1239906&group_i... ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs