Passing struct to function

[Michał]

On Wednesday, 13 June 2018 at 17:37:44 UTC, Steven Schveighoffer 
wrote:

> Hm... the only way to do it in D is to provide a function that 
> checks whether the small vector optimization is in play, and 
> return a pointer/slice to itself.
>
> With D it is possible to alias the getter function that 
> provides the actual data to allow code to look nicer.
>
> For example (crude example):
>
> struct Vector(T)
> {
>    bool svo; // small vector optimization
>    union
>    {
>       T[4] local;
>       T[] heap;
>    }
>    inout(T)[] get() inout { return svo ? local[], heap; }
>    alias get this;
>    ... // implement specialized append, concat operators, etc.
> }
>
> Now, you can use Vector as if it were an array, and it just 
> works.
>
> -Steve

Thanks for an idea, I will try it.