Optional and NotNull version 0.5.0 - swift optional like and scala option like

[Paul Backus]

On Wednesday, 22 August 2018 at 22:11:05 UTC, aliak wrote:
> On Monday, 20 August 2018 at 19:52:53 UTC, jmh530 wrote:
>>
>> It's interesting that both sumtype and optional have match 
>> templates. Maybe scope to combine these projects?
>
> That'd be cool. Optional uses .match on a "some" or "none" 
> range, while SumType uses it on a union. So ideas on how to go 
> about it?

In theory, Optional(T) could be implemented as a wrapper around 
SumType!(T, None), which would let it reuse SumType's match 
method. I'm not sure if it'd be worth the effort to convert at 
this point, though.