Re: [Boost-users] How to forward to a list of boost::function?

Subject: Re: [Boost-users] How to forward to a list of boost::function?
From: John Ky (newhoggy_at_[hidden])
Date: 2010-03-16 07:29:54

Hi OvermindDL1,

I'm having trouble finding any information on this (or some of the other
alternatives presented here).  For example, the following page:

http://www.boost.org/doc/libs/1_42_0/libs/fusion/doc/html/fusion/functional.html

<http://www.boost.org/doc/libs/1_42_0/libs/fusion/doc/html/fusion/functional.html>links
to a broken link:

http://www.boost.org/doc/libs/1_42_0/libs/functional/forward/doc/html/index.html

<http://www.boost.org/doc/libs/1_42_0/libs/functional/forward/doc/html/index.html>Anywhere
I can get to the documentation on this?

Cheers,

-John

On Tue, Mar 16, 2010 at 5:00 PM, OvermindDL1 <overminddl1_at_[hidden]> wrote:

> On Mon, Mar 15, 2010 at 9:59 PM, Steven Watanabe <watanabesj_at_[hidden]>
> wrote:
> > AMDG
> >
> > John Ky wrote:
> >>
> >> I have a class:
> >>
> >> template<typename function_type>
> >> class function_vector {
> >> private:
> >>   std::vector<boost::function<function_type> > functions;
> >> };
> >>
> >>
> >> I want to write an operator() for this template class that takes all the
> >> arguments necessary to invoke a function of type function_type.  When
> >> called, it should call each function in the functions field.
> >>
> >> How do I do this?
> >>
> >> I think Boost.Signals2 does something like this, but I can't work out
> how
> >> it
> >> is done.
> >>
> >
> > Signals does it by specializing for every possible arity.
>
> Although you (nor signals) needed to do it that way.  Using
> Boost.Fusion you can have it be all automatic, probably even simplify
> it more if you need better forwarding with
> Boost.Functional.Forwarding.
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