Re: [Boost-bugs] [Boost C++ Libraries] #7489: No hash function for classes containing conversion operation to ordinary type

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7489: No hash function for classes containing conversion operation to ordinary type
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-10-09 21:18:22

#7489: No hash function for classes containing conversion operation to ordinary
type
-------------------------------------------------+--------------------------
  Reporter:  Robert Luberda <robert@…>           |       Owner:  danieljames
      Type:  Bugs                                |      Status:  new        
 Milestone:  To Be Determined                    |   Component:  hash       
   Version:  Boost 1.51.0                        |    Severity:  Problem    
Resolution:                                      |    Keywords:             
-------------------------------------------------+--------------------------

Comment (by anonymous):

 This is deliberate, implicit conversions can cause subtle errors. For a
 case like this it's pretty easy to add support with something like:

 {{{
 friend std::size_t hash_value(MyClass const& v) { return (int) v; }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7489#comment:1>
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