ref struct member function

[Steven Schveighoffer]

On 5/13/21 3:21 PM, PinDPlugga wrote:

> This works but issues a deprecation warning:
> ```
> onlineapp.d(30): Deprecation: returning `this` escapes a reference to 
> parameter `this`
> onlineapp.d(30):        perhaps annotate the parameter with `return`
> Fraction(1, 3)
> ```
> 
> I found several other ways to make this work without the warnings, but I 
> am wondering how to make this particular case work, or if it is not a 
> recommended way, what the proper way would be.

Just follow the recommendation:

```d
ref Fraction reduce() return { // annotated with return
```

This means, "I will return all or part of the parameter passed in" (the 
parameter being the `this` reference)

-Steve