From the D Blog: Crafting Self-Evident Code in D

[Walter Bright]

On 10/5/2023 10:21 AM, angel wrote:
> I don't mind if it does not compile without the `ref`, but it should be on the 
> table - WYSIWYG.

It's a good point. Consider the refactoring angle. If I wished to switch from a 
struct to a class, and vice versa, and can just change the definition. If `ref` 
was needed everywhere, I'd have to refactor a lot of code.

This is also why D uses `.` instead of `->`. Easier to refactor.