wrap/unwrap vs Go-style duck typing

[Dicebot]

On Friday, 25 October 2013 at 05:45:53 UTC, Andrei Alexandrescu 
wrote:
> Hello,
>
> I was curious how our fledgling wrap and unwrap routines 
> compare with Go's duck typing - similarities, distinctions, 
> performance. Please share any thoughts, thanks!
>
> Andrei

It may have been really good if it worked with structs and could 
have been decently optimized away by compiler. Right now though 
similar built-in language implementation in Rust (I don't know 
how it is in go but assume similarity) is totally superior. Key 
point of this feature for me is being able to adapt existing 
non-polymorphic duck-typed aggregates (structs) to some external 
polymorphic binary interfaces. `wrap` does not seem to help here.