Ambiguous use of variable in Swift

Question

I converted my Swift to the current Swift syntax and now get the following error in this code:

let paths = NSSearchPathForDirectoriesInDomains(
                FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)
let documentsDirectory: AnyObject = paths[0] as AnyObject
let dataPath = documentsDirectory.appendingPathComponent(saveFileName)

Error: Ambiguous use of appendingPathComponent

vadian · Accepted Answer · 2017-01-08 12:16:15Z

3

Basically

never cast a type up to something more unspecific.
never cast a distinct known type at all.

NSSearchPathForDirectoriesInDomains returns clearly [String], so delete the annotation and the cast.

let documentsDirectory = paths[0]

However it's recommended to use the URL related API because in Swift 3 the path functions in String have been removed.

let documentsDirectory = try! FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: true)
let dataURL = documentsDirectory.appendingPathComponent(saveFileName)

If you really need the string path add

let dataPath = dataURL.path

edited Jan 8, 2017 at 12:16

answered Jan 8, 2017 at 12:03

vadian

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2 Comments

hulapalu Over a year ago

Thanks for your answer. Now I get the following error: appendingPathComponent is unavailable: Use appendingPathComponent on URL instead

hulapalu Over a year ago

Works like a charm!

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