Re: [Boost-users] error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'const is a user-defined type, however, I'm getting the following:'

Subject: Re: [Boost-users] error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'const is a user-defined type, however, I'm getting the following:'
From: Kenny Riddile (kfriddile_at_[hidden])
Date: 2008-12-19 16:01:26

Joseph A. Marks wrote:
> Has anyone seen an error like this?
> 
> SpecialDate is a user-defined type, however, I'm getting the following:
> 
> boost/test/test_tools.hpp(326) : error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'const  is a user-defined type, however, I'm getting the following:
> ' (or there is no acceptable conversion)
> 
> Thanks in Advance,
> 
> Joseph A. Marks
> e-mail:  josephamarks_at_[hidden]

I believe Boost.test likes to output the values in question to stdout 
when a test case fails.  If one of those values is a user-defined type, 
that type will need an overloaded << operator for this to work.