Re: [boost] task_array<n> and variadic templates

Subject: Re: [boost] task_array<n> and variadic templates
From: Yechezkel Mett (ymett.on.boost_at_[hidden])
Date: 2008-11-19 05:02:21

On Wed, Nov 19, 2008 at 3:18 AM, vicente.botet <vicente.botet_at_[hidden]>wrote:

> Hi,
>
> I want to create an static task_array<n> which must be initiaized with n
> functors.
>
> In pseudo code:
>
> template <std::size N>
> struct task_array {
>    template <typename F_1, ..., typename F_N>
>    task_array(F_1 f1, ...,  F_N fN);
> };
>
You could use a normal variadic template constructor with a static_assert in
it. If that's not good enough (i.e. you need to remove the constructor from
the overload set) I would suggest enable_if, but I can't think of a way to
get it into the constructor. With concepts you could do

requires std::True<sizeof...(T) == N>

Yechezkel Mett