Re: [Boost-users] Boost.Optional error should be a warning

Subject: Re: [Boost-users] Boost.Optional error should be a warning
From: Michael Powell (mwpowellhtx_at_[hidden])
Date: 2019-01-14 20:46:31

On Mon, Jan 14, 2019 at 3:40 PM Steven Watanabe via Boost-users
<boost-users_at_[hidden]> wrote:
>
> AMDG
>
> On 1/14/19 1:10 PM, Michael Powell via Boost-users wrote:
> > On Mon, Jan 14, 2019 at 3:08 PM Steven Watanabe via Boost-users
> > <boost-users_at_[hidden]> wrote:
> >>
> >> On 1/14/19 12:31 PM, Michael Powell via Boost-users wrote:
> >>> I am using Boost.Optional, and, while I do want to "include it in an
> >>> output", the library which I am doing so has another mechanism to do
> >>> so.
> >>>
> >>
> >> It doesn't matter that you have another way to handle
> >> output.  If you get this message, it means that your
> >> code is trying to call optional's stream operator,
> >> for which you must #include optional_io.hpp.
> >
> > Actually, no you do not need to include it.
>
> I'm a bit puzzled about how you reached this
> conclusion, when you are clearly getting an
> error that is a result of not including it.
>
> > That's the point of
> > providing my own String Maker to the Catch framework, in this
> > instance.

I stand corrected; I think it's because String Maker is converting the
Optional to std::string, so the error never materializes in this case.
When I comment out the String Maker include, then the Optional stands
there facing the Catch framework for comparison, reporting (the IO
error), etc. That makes perfect sense now.

> In Christ,
> Steven Watanabe
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