Reading a short text file to a string in swift

Question

I need to read the contents of a short text file in my Swift program. I did this:

var err: NSError?
let bundle = NSBundle.mainBundle()
let path = bundle.pathForResource("cards", ofType: "ini")
let content = String(contentsOfFile: path!, encoding: NSUTF8StringEncoding, error: nil)

My problem is that I can't use the error reporting. If I change that last line to this:

let content = String(contentsOfFile: path!, encoding: NSUTF8StringEncoding, error: err)

The compiler complains "Extra argument 'contentsOfFile' in call". That makes zero sense to me, maybe someone else can figure it out?

Answer 1

Following the new error handling introduced into iOS 9/Swift 2, a solution for this that works for me is:

let fileLocation = NSBundle.mainBundle().pathForResource("filename", ofType: "txt")!
let text : String
do
{
    text = try String(contentsOfFile: fileLocation)
}
catch
{
    text = ""
}

text will contain the file contents or be empty in the case of an error.

Answer 2

At a first glance I'd say that you have to pass the err variable by reference:

let content = String(contentsOfFile: path!, encoding: NSUTF8StringEncoding, error: &err)