[_ph_]

No, I am not talking about costs at all. First of all, I don't see how complex business logic requires generics. I have written complex business applications and not required them. I really have no idea why you would "need" them.

And also for the Go developers, it is not about "cost". They have no idea how they could implement generics without fundamentally changing the Go language to something different than what it was about before. They are working on concepts, but nothing resulted what would be a candidate for implementation.

[willtim]

This boils down to how much one values static types and code reuse. If you do not have Generics (a.k.a. parametric polymorphism) then you are forced to make a choice between type safety and code reuse. You cannot have them both.