preview in: it seems that return type auto solves scope variable assignment to this

[Dennis]

On Thursday, 9 February 2023 at 17:42:00 UTC, Dmytro Katyukha 
wrote:
> So, the first question is: where in this code assignment to 
> `this` happens?

When calling a member function like `other.toAbsolute`, you're 
assigning `other` to the implicit `this` parameter, as if you are 
calling `toAbsolute(this: other)`.

> So, the second question is: what happens in this case?

Functions with `auto` return get attributes inferred, just like 
template functions. The compiler infers `scope` based on the 
implementation of `toAbsolute`.