Re: [boost] [review][variant2] visit needs better user documentation

Subject: Re: [boost] [review][variant2] visit needs better user documentation
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2019-04-06 15:20:24

AMDG

On 4/6/19 9:01 AM, Larry Evans via Boost wrote:
> <snip>
> I only drew that conclusion because the number of args seems the only
> difference between the test that compiles OK and the one that doesn't.
> The code was copy&pasted from:
> 
> 
> https://github.com/pdimov/variant2/blob/develop/test/variant_visit.cpp#L105
> 
> and the function object there only accepts `int` as it's first
> argument.  So, does that compile because any of the
> alternative types can be converted to `int`?
> 

Yes.

> Hmmm.  Changed the all types of the lamba args to auto and
> it still fails to compile :(Â  Why is that?
> 

The error is different, though.  It fails because
the function body doesn't compile with every
combination of types.

In Christ,
Steven Watanabe