exit status: 1 with stderr:
<stdin>:3:5: error: consecutive statements on a line must be separated by ';' f {} : {} ^ ; <stdin>:3:6: error: expected expression f {} : {} ^ <stdin>:3:8: error: top-level statement cannot begin with a closure expression f {} : {} ^ <stdin>:1:12: warning: when calling this function in Swift 4 or later, you must pass a '()' tuple; did you mean for the input type to be '()'? func f( a: (Void) -> Void...) { } ^~~~~~ () <stdin>:3:8: error: closure expression is unused f {} : {} ^ <stdin>:3:8: note: did you mean to use a 'do' statement? f {} : {} ^ do