Method-Only Types
If your associated type
requirement doesn't come from Equatable
conformance but instead from your own use, you can double-check if you
actually need these associated types.
Take this example of a validator type:
protocol Validator {
associatedtype I
func validate(_ input: I) -> Bool
}
As the associated type
is only used in one method, you can
alternatively just make it a generic
method and thus save yourself
from introducing unnecessary unfinished types:
protocol Validator {
func validate<I>(_ input: I) -> Bool
}