What is quite interesting (after looking at their documentation), is that V lang[1] has all that is mentioned: `?`[2], `or`[2], sum types[3], and can return multiple values[4].

[1]: https://vlang.io/

[2]: https://github.com/vlang/v/blob/master/doc/docs.md#optionres...

[3]: https://github.com/vlang/v/blob/master/doc/docs.md#sum-types

[4]: https://github.com/vlang/v/blob/master/doc/docs.md#returning...