I outlined a generic class in Swift.
class MyClass<T> {
}
I can instantiate MyClass<Int> and assign it to a variable whose sort is MyClass with out errors:
func f1() {
// okay
let a = MyClass<Int>()
// okay
var b: MyClass = a
}
However I cannot use MyClass for a operate argument:
// construct error: Reference to generic sort 'MyClass' requires arguments in <...>. Insert '<Any>'.
func f2(c: MyClass) {
}
I modified the code as Xcode suggests. And the error disappeared:
// okay
func f3(c: MyClass<Any>) {
}
However I am unable to cross a object of MyClass<Int> to this operate:
func f4() {
// okay
let a = MyClass<Int>()
// construct error: Can't convert worth of sort 'MyClass<Int>' to anticipated argument sort 'MyClass<Any>'
f3(c: a)
}
Why cannot I exploit MyClass for a operate argument?
And why does not MyClass<Any> settle for MyClass<Int>?
