Re: [Boost-users] framework for invoking func-ptrs with different argument numbers

Subject: Re: [Boost-users] framework for invoking func-ptrs with different argument numbers
From: Nathan Ridge (zeratul976_at_[hidden])
Date: 2013-08-17 17:18:55

> Consider the following task: Given a
> -) pointer to a function, and
> -) an iterator range with elements of type void *,
> the function-ptr shall be called with all the elements in the range as
> arguments.
>
> So conceptionally something like this:
>
> template <typename Func, typename Iter>
> void make_call(Func, Iter begin, Iter end)
> {
> int n = std::distance(begin, end);
> (*Func) (*(begin), *(begin + 1), *(begin + 2), ..., *(begin + n - 1))
> }
>
> The interface (function declaration) here is +- what I want, the
> implementation shown of course is dummy-code not working. Does boost
> provide a more or less easy way to get this implementation smoothly
> done? C++ is 2003 version, so code must be compatible with e.g. VS
> 2008.. Note that I would know in principle a way how to do implement it
> myself, which involves the creation of a separate class for each number
> of arguments, but that's precisely what I want to avoid and I hope that
> wheel has already been invented in some boost-library :)

Is 'Func' a C-style vararg function, or is it a function object where
the number of arguments it takes is known at compile time (perhaps being
a choice among a finite number of overloads)?

Regards,
Nate