Comment by peter_l_downs

Looks like a big step in the right direction. The biggest pain is that methods cannot contain additional types, which prevents the definition of generic containers with a map method like

    func (c Container(T)) Map(transform(type V)(T) V) Container(V)

if you want to see what `Result(T)` and `Option(T)` look like under this proposal, check out a very stupid implementation here https://go2goplay.golang.org/p/dYth-AQ0Fru It's definitely more annoying.

But, as per https://go.googlesource.com/proposal/+/refs/heads/master/des... it looks like maybe they will allow additional type parameters in methods, which would be REALLY nice.