Re: [Boost-users] [Signals2] Compile error saying slot_type is not a type

Subject: Re: [Boost-users] [Signals2] Compile error saying slot_type is not a type
From: Marc dela Cruz (mdelacruz_at_[hidden])
Date: 2009-07-07 01:01:17

Thanks.

I always miss the simple things...

----- Original Message -----
From: Frank Mori Hess
[mailto:frank.hess_at_[hidden]]
To: boost-users_at_[hidden]
[mailto:boost-users_at_[hidden]]
Sent: Mon, 06 Jul 2009 13:27:34
-0500
Subject: Re: [Boost-users] [Signals2] Compile error saying slot_type
is not	a type

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> On Monday 06 July 2009, Marc DelaCruz wrote:
> > Hi all,
> > I'm new to boost and I get the following compile error:
> >
> > ~/FileDesc.h:254: error: `class boost::signals2::signal<void
> > ()(ProcessKit::FileDescBase&, M&),
> > boost::signals2::optional_last_value<typename boost::function_traits<void
> > ()(ProcessKit::FileDescBase&, M&)>::result_type>, int, std::less<int>,
> > boost::function<void ()(ProcessKit::FileDescBase&, M&)>, typename
> > boost::signals2::detail::extended_signature< boost::function_traits<void
> > ()(ProcessKit::FileDescBase&, M&)>::arity, void
> > ()(ProcessKit::FileDescBase&, M&)>::function_type,
> > boost::signals2::mutex>::slot_type' is not a type
> > ~/FileDesc.h:255: error: ISO C++ forbids declaration of `rReadSlot' with
> no
> > type
> >
> >
> > I have code like the following:
> >
> > template<typename M>
> > class FileDesc : public FileDescBase
> > {
> >     ...
> >     void setReadCallBack( boost::signals2::signal<void ( FileDescBase&,
> M&)
> >
> > >::slot_type const&  rReadSlot)
> 
> 
> I think you're missing a 'typename' keyword:
> 
> void setReadCallBack(typename boost::signals2::signal<void ( FileDescBase&, 
> M&) >::slot_type const&  rReadSlot)
> 
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