For those interested, It appears the reason was because of a compiler
error I hit, and didn't ask about, or really worry how to resolve it.
:-/
Function declaration:
typedef boost::function < VSSP ( std::string, EncodingEnum) >
CreateTypeFunc;
bool ElementBase::disconnectCreateTypeSignal(const CreateTypeFunc& slot)
{
LOG4CXX_DEBUG(logger_, "disconnectCreateTypeSignal in");
bool retValue = false;
createTypeSignal_.disconnect(slot);
}
Error:
(apologies for the length)
c:\Program
Files\boost\boost_1_35_0\boost\signals\signal_template.hpp(242) : error
C2666: 'boost::operator`=='' : 4 over
loads have similar conversions; c:\Program
Files\boost\boost_1_35_0\boost\function\function_base.hpp(669): could be
'boo
st::enable_if_c::type boost::operator
==::slo
t_fun
ction_type>(Functor,const boost::function_base &) with
[B=true,T=bool,R=boost::detail::function_traits_helpermodel::VariantStorage
(std::string,model::EncodingEnum::EncodingEnum)>::type>::result_type,T
1=boost::detail::function_traits_helpermodel::VariantStorage (std::string,model::
EncodingEnum::EncodingEnum)>::type>::arg1_type,T2=boost::detail::functio
n_traits_helpermodel::VariantStorage
(std::string,model::EncodingEnum::EncodingEnum)>::type>::arg2_type,Combi
ner=boost::last_valu
emodel::VariantStorage (std::string,model::
EncodingEnum::EncodingEnum)>::type>::result_type>,Group=int,GroupCompare
=std::less<int>,SlotFunction=boost::function,Functor=boost::signal2<
boost::detail::funct
ion_traits_helper (std::string,model::EncodingEnum::Encoding
Enum)>::type>::result_type,boost::detail::function_traits_helper
(std::string,model::EncodingEnum::EncodingEnum)>::type>::arg1_type,boost
::detail::function_traits_helpermodel::VariantStorage
(std::string,model::EncodingEnum::EncodingEnum)>::type>::arg2_type,boo
st::last_valuemodel::VariantStorage (std::s
tring,model::EncodingEnum::EncodingEnum)>::type>::result_type>,int,std::
less<int>,boost::function>::slot_function_type]';
c:\Program Files\boost\boost_1_35_0\bo
ost\function\function_base.hpp(660): or
'boost::enable_if_c::type boost::operator ==<Function>(const
boost::f
unction_base &,Functor) with
[B=true,T=bool,Function=model::ElementBase::CreateTypeFunc,Functor=model
::ElementBase::Crea
teTypeFunc]'; c:\Program
Files\boost\boost_1_35_0\boost\function\function_template.hpp(832): or
'void boost::opera
tor ==(const boost::function2
&,const boost::function2 &) with
[R=model::VariantStorageSharedPtr,T0=std::string,T1=model::EncodingEnum:
:EncodingEnum,Allocator=std::allocator<void>]';
or 'built-in C++
operator==(boost::function2::safe_bool with
[R=model::VariantStorageSharedPtr,
T0=std::string,T1=model::EncodingEnum::EncodingEnum,Allocator=std::alloc
ator<void>], boost::function2
::safe_bool with
[R=model::VariantStorageSharedPtr,T0=std::string,T1=model::EncodingEnum:
:EncodingEnum,Allocator=std::al
locator<void>])'; while trying to match the argument list
'(boost::signal2::slot_function_type with
[R=boost::detail::function_traits_helper
(std::string,model::EncodingEnum::EncodingEnum)>::type>::result_type,T1=
boost::detail::function_traits_helper
model::VariantStorage
(std::string,model::EncodingEnum::EncodingEnum)>::type>::ar
g1_type,T2=boost::detail::function_traits_helpermodel::VariantStorage (std::strin
g,model::EncodingEnum::EncodingEnum)>::type>::arg2_type,Combiner=boost::
last_valuemodel::VariantStorage
(std::string,model::EncodingEnum::EncodingEnum)>::type>::re
sult_type>,Group=int,GroupCompare=std::less<int>,SlotFunction=boost::fun
ction], const
model::ElementBase::CreateTypeFunc)'; c:\Program
Files\boost\boost_1_35_0\
boost\signals\signal_template.hpp(224) : see reference to function
template instantiation 'void boost::signal2::do_disconnect<T>(const
Function &,boost::mpl::bool_) with [R=boost::detail
::function_traits_helper (std::string,model::EncodingEnum::E
ncodingEnum)>::type>::result_type,T1=boost::detail::function_traits_help
er
(std::string,model::EncodingEnum::EncodingEnum)>::type>::arg1_type,T2=bo
ost::detail::function_traits_help
ermodel::VariantStorage
(std::string,model::EncodingEnum::EncodingEnum)>::type>::
arg2_type,Combiner=boost::last_value
(std::string,model::EncodingEnum::EncodingEnum)>::type>::result_type>,Gr
oup=int,GroupCompare=std::less<in
t>,SlotFunction=boost::function,T=model:
:ElementBase::CreateTypeFunc,Function=model::ElementBase::CreateTypeFunc
,C_=false]' being compiled; c:\Documents and Set
tings\td26134\Desktop\trunk1\src\model\ElementBase.cpp(440) : see
reference to function template instantiation 'void boo
st::signal2::disconnec
tmodel::ElementBase::CreateTypeFunc(const T &)
with
[R=boost::detail::function_traits_helpermodel::VariantStorage (std::string,
model::EncodingEnum::EncodingEnum)>::type>::result_type,T1=boost::detail
::function_traits_helpermodel::VariantStorage
(std::string,model::EncodingEnum::EncodingEnum)>::type>::arg1_type,T2=bo
ost::detail
::function_traits_helper (std::string,model::EncodingEnum::E
ncodingEnum)>::type>::arg2_type,Combiner=boost::last_valuemodel::VariantStorage
(std::string,model::EncodingEnum::EncodingEnum)>::type>::result_type>,Gr
oup=int,Gro
upCompare=std::less<int>,SlotFunction=boost::function,T=model::ElementBase::CreateTypeFunc]' being compiled
scons: *** [build_dir\Windows\src-model\ElementBase.obj] Error 2
