I really don't understand optionals. This code fails with "Call can throw, but
is not marked with try ..." on the program line: t1.mth("abc", s1);
class Test {
private var s1 : String!
func tst() {
let t1 : Test1 = Test1()
t1.mth("abc", s1)
}
}
class Test1 {
func mth(p1 : String, _ p2 : String) -> String {
return p1
}
func mth(p1 : String, _ p2 : Any) throws -> String {
return p1
}
}
but the program compiles fine if I change the code in either of these two
manners:
1. I define s1 as non-optional like this: private var s1 = "", or
2. I remove the second overloaded mth method (the one with "_ p2 : Any" as the
second parameter and the throws clause)
Swift method lookup obviously chose the second mth func if it exists, but why?
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