How to use the UnsafeMutablePointer in Swift 3?

Question

if let fileObject = NSString(contentsOfFile: strBundle, usedEncoding:Int32?

Every time that I try to work this out, I get more frustrated! Please help me! I am not sure what I need to fill in the "usedEncoding:" parameter.

Here is the error it gives me:

Cannot convert value of type 'Int32?.Type' (aka 'Optional.Type') to expected argument type 'UnsafeMutablePointer?'

If that's the case, then do you have any ideas on how I can fix it? — Jack_Lynch, Mar 08 '17 at 17:55
Why are you using Foundation methods instead of Swift methods? Why not use `String(contentsOfFile:)` which `throws` its error? — JAL, Mar 08 '17 at 18:07

matt · Answer 1 · 2017-03-08T18:12:26.667

1

Like this:

let f = Bundle.main.url(forResource: "myFile", withExtension: "txt")!
var enc : String.Encoding = .ascii // dummy value
let s = try! String(contentsOf: f, usedEncoding: &enc)

Modify as needed (e.g. use a real try in a do/catch construct etc.); the example code is just to get you going again.

edited Mar 08 '17 at 18:12

answered Mar 08 '17 at 18:10

matt

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Good to see an answer in swift, rather than ***Foundation*** – Mr. Xcoder Mar 08 '17 at 18:11

How to use the UnsafeMutablePointer in Swift 3?

1 Answers1