I really like Rust's use of the `match` block. This feels like what switches want to be, but in a way that's more useable. I like that you can assign a variable to be the value of a match block, and I also like that a function returning a Result can return either an Ok() or an Error().

I like the idea of functions having to implement returns for *ok* and *error*, e.g.:

```
name = match getCustomerName(some_id) {
ok: { |v| v.first_name + v.last_name },
error: { |e| yield_error () }
}
```