`@cases` on tuples

[jariji]

@cases (ox, oy) begin
  (Some(x), Some(y)) => x + y
  ...
end

This would be useful.

[jariji]

Actually I should just try writing MLStyle integration.

[mrufsvold]

@jariji , did you ever come up with an approach for this? I am currently working on something where I'd like to express the cases for combinations of two sumtypes and would love to avoid a bunch of nesting.

[jariji]

Nope - I bet Moshi.jl can probably do this but I haven't adopted it yet.