Re: [boost] [yap] Review

Subject: Re: [boost] [yap] Review
From: Zach Laine (whatwasthataddress_at_[hidden])
Date: 2018-02-13 16:46:32

On Tue, Feb 13, 2018 at 11:28 AM, Steven Watanabe via Boost <
boost_at_[hidden]> wrote:

> AMDG
>
> On 02/12/2018 06:57 PM, Zach Laine via Boost wrote:
> > <snip>
> >> 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.  I could have doubled the number of functions and macros in
> > Yap that take an expression template template parameter, providing an
> > overload that does not take this parameter.  Of course, the macros would
> be
> > differently named, not overloaded (another small problem).
>
> You don't need a separate macro:
> #define BOOST_YAP_USER_UNARY_OPERATOR_MEMBER(op_name, ...) \
>   /* implementation */

Ah, that's right.

Zach