throwsとrethrows。うーんここまでやるかなあ。 #cswift #CodePiece

CodePiece.swift

func executeRethrows(f:() throws ->()) rethrows {
  do{try f()}catch{print(error)}
}
func execute(f:() throws ->()) {
  do{try f()}catch{print(error)}
}
enum MyError:ErrorType {
  case A, B
}
execute{
  throw MyError.A
}
try executeRethrows {
  throw MyError.A
}
executeRethrows {
  print(1)
}