sumtype 0.3.0

[Atila Neves]

On Sunday, 6 May 2018 at 19:18:02 UTC, Paul Backus wrote:
> SumType is a generic sum type for modern D. It is meant as an 
> alternative to `std.variant.Algebraic`.
>
> Features:
>   - Pattern matching, including support for structural matching 
> (*)
>   - Self-referential types, using `This`
>   - Works with `pure`, `@safe`, `@nogc`, and `immutable` (*)
>   - Zero runtime overhead compared to hand-written C
>     - No heap allocation
>     - Does not rely on runtime type information (`TypeInfo`) (*)
>
> Starred features (*) are those that are missing from 
> `Algebraic`.
>
> Code examples are available in the documentation (linked below).
>
> New in this release:
>   - The list of types allowed in a sum type is now public
>   - Implicit qualifier conversions are now allowed in pattern 
> matching
>   - Better code examples in the documentation
>
> This library is a work in progress. If you have a use case 
> you'd like to see supported, or an API you'd like to see 
> implemented, please get in touch!
>
> Documentation: https://pbackus.github.io/sumtype/sumtype.html
> DUB: https://code.dlang.org/packages/sumtype
> Github: https://github.com/pbackus/sumtype

Yeeeees.

I love it when someone else goes and implements something that 
was on my TODO stack. Dmitry Olshansky did it last week with 
Photon, then you come along and take another item from me as 
well. Less work for me!

Good work, definitely going to try this out.