DIP1000: Walter's proposal to resolve ambiguity of ref-return-scope parameters

[Dennis]

On Thursday, 25 November 2021 at 14:16:21 UTC, zjh wrote:
> If attribute deduction is available, can the `attr` be omitted 
> as much as possible?

Yes

> Looking at funcs, attrs all around, as a lover of clean code, I 
> can't bear it.

You don't have to use the attributes, it's there for `@nogc` 
`@safe` library code doing low-level memory management. Your 
applications are free to ignore it most of the time.

Also, 'clean code' is subjective. The alternative to `scope` 
parameters that you sometimes see in C libraries is a 'pointer 
lifetime' section in a documentation comment, which is:

- inconsistent (varies per library)
- not verified for correctness (compiler doesn't understand it)
- more verbose than a single `scope` keyword

I don't consider that clean.