[OT] Some neat ideas from the Kotlin language

[Kagamin via Digitalmars-d]

On Wednesday, 24 February 2016 at 14:50:37 UTC, Andrei 
Alexandrescu wrote:
> Probably we can do the same in a library: never allow the value 
> out of an Option, but provide a visitor with two aliases 
> (ham/spam).

Rust provides value accessor for Option: 
https://doc.rust-lang.org/stable/std/option/enum.Option.html#method.unwrap