[swift-evolution] Auto-generate op==?

[Jan E. Schotsman]

I'd still like some comment on my idea of making the auto-generated  
op== available inside a custom definition of Equatable.
That way you can build on the default without the need for an  
@dontequate memberwise keyword.
I admit it is a little clumsy to make copies first, set the  
"dontequate" properties to equal values in lhs and rhs, equate and  
then extend equating some of your calculated properties.

Jan E.