Re: [boost] [yap] Review

Subject: Re: [boost] [yap] Review
From: Zach Laine (whatwasthataddress_at_[hidden])
Date: 2018-02-13 16:47:39

On Tue, Feb 13, 2018 at 11:30 AM, Steven Watanabe via Boost <
boost_at_[hidden]> wrote:

> AMDG
>
> On 02/12/2018 06:57 PM, Zach Laine via Boost wrote:
> > On Mon, Feb 12, 2018 at 4:15 PM, P F via Boost <boost_at_[hidden]>
> > wrote:
> >
> >> You could also get rid of the need for `::user_expr`
> >
> >
> > We actually want that.  It's often necessary to be able to return an
> > expression created from some template different than the template
> defining
> > he operator.
> >
>
>   If that's really important then why doesn't
> BOOST_YAP_USER_FREE_BINARY_OPERATOR take two
> expr_template parameters?

Because there's only one result.   The expr_template parameter governs how
the result is constructed, not which inputs are accepted.

Zach