Re: [boost] [outcome] expected<T&>, result<T&>

2017-05-26 0:01 GMT+02:00 Peter Dimov via Boost :

Gottlob Frege wrote:

Some committee members want references to work one way, some want it to

...

work another, ...

More specifically, some want in

T t1, t2; expected e1( t1 ), e2( t2 );

e1 = e2;

t1 to be assigned t2, whereas others want e1 to start pointing to t2. Similarly for e1 = t2.

From what I remember the biggest controversy in boost::optional was about the assignment from T:

``` T v1, v2; optional ot (v1); ot = v2; ``` You do not have to solve this prolem in `expected<>`. Also, the Standard has a precedent for this: std:reference_wrapper: it rebinds on assignment.

so we should *never* support references.

...

Sounds like a good plan to me.

Then you will have to work aroun with `expected`. Regards, &rzej;