I have a protocol called P, and I want to write a function that would return an instance of any type conforming to that protocol.
I wrote this:
func f<T: P>() -> T? {
// ...
}
But then when I try to call it:
var fp = f()
I get this error: Generic parameter 'T' could not be inferred. What am I doing wrong and how to solve this?
Thanks for your help.
You're very close. Say you have a struct A that conforms to P. Then you could specify the generic parameter as follows:
var fp: A? = f()
Without that information, the compiler can't know what type fp should be.