ios - How can I merge two arrays into a dictionary?

Question

I have 2 arrays:

    var identic = [String]()
    var linef = [String]()

I've appended them with data. Now for usability purposes my goal is to combine them all into a dictionary with the following structure

FullStack = ["identic 1st value":"linef first value", "identic 2nd value":"linef 2nd value"]

I've been browsing around the net and couldnt find a viable solution to this.

Any ideas are greatly appreciated.

Thank you!

Answer 1

Starting with Xcode 9.0, you can simply do:

var identic = [String]()
var linef = [String]()

// Add data...

let fullStack = Dictionary(uniqueKeysWithValues: zip(identic, linef))

If your keys are not guaranteed to be unique, use this instead:

let fullStack =
    Dictionary(zip(identic, linef), uniquingKeysWith: { (first, _) in first })

or

let fullStack =
    Dictionary(zip(identic, linef), uniquingKeysWith: { (_, last) in last })

Documentation:

• https://developer.apple.com/documentation/swift/dictionary/3127165-init

• https://developer.apple.com/documentation/swift/dictionary/3127161-init