[boost] [lambda] Can't get simple lambda working...

Subject: [boost] [lambda] Can't get simple lambda working...
From: Robert Dailey (rcdailey_at_[hidden])
Date: 2012-03-19 18:44:05

Here is a basic function I have:

bool MimeDocument::GetExistingAttachment(
    std::string const& filename,
    std::vector<MessageAttachment> const& attachments,
    MessageAttachment& attachment
)
{
    using namespace boost::lambda;
    using boost::lambda::_1;

    std::vector<MessageAttachment>::const_iterator it =
        std::find_if( attachments.begin(), attachments.end(),
            bind( &MessageAttachment::name, _1 ) == filename
        );

    if( it != attachments.end() ) {
        attachment = *it;
        return true;
    }

    return false;
}

MessageAttachment::name() has 2 overloads, one that takes 1 parameter and
the other that takes no parameter. I'm attempting to call the version that
accepts no parameters and returns a "char const*". I want to then compare
this value to the local variable "filename".

This should happen for each object in the vector (_1).

I get various types of compiler errors on MSVC9. They all have to do with
C2780:

1>c:\code\work\cmake-mds\server\gmmserver\domino\server\interface\dimime.cpp(287)
: error C2780: 'const
boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost::lambda::action<10,boost::lambda::function_action<10,T>>,detail::bind_tuple_mapper<const
Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const
Arg7,const Arg8,const Arg9,const Arg10>::type>> boost::lambda::bind(const
Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6
&,const Arg7 &,const Arg8 &,const Arg9 &,const Arg10 &)' : expects 10
arguments - 2 provided
1>
 c:\code\work\cmake-mds\build-vc9\third_party\boost\1.48.0\include\boost\lambda\detail\bind_functions.hpp(1743)
: see declaration of 'boost::lambda::bind'

Anyone have any idea what I'm doing wrong?

---------
Robert Dailey