Converting Array to JSON using SwiftyJSON

Question

I'm looking for a quick way to map a a 2-dim array to JSON. I'm using SwiftyJSON and have hit a brick wall (I'm a hardware guy lol). Thank you!

import UIKit
import SwiftyJSON

var myPlaceArray = [Int:[String: Any]]()
myPlaceArray[0] = [
  "lat" : "2.590",
  "long" : "170.9"
  ]

myPlaceArray[1] = [
  "lat" : "42.90",
  "long" : "70.9"
]

//I can do this
let json = JSON(myPlaceArray[1]!)
print(json)

//but I cant do this
let jsonIndexed = JSON(myPlaceArray)
print(jsonIndexed[0] )

Fahim · Accepted Answer · 2017-03-31 00:50:20Z

1

You are not declaring an array with this statement:

var myPlaceArray = [Int:[String: Any]]()

Instead, what you've declared above is a dictionary where the key is an Int and the values are dictionaries.

What you need is the following:

var myPlaceArray = [[String: Any]]()

Now, you can assign array elements as you did and you should be able to access the array as you wanted via your code. Give it a try and see :) If you run into any issues, comment here and I'll take a look.

answered Mar 31, 2017 at 0:50

Fahim

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1 Comment

Fahim Over a year ago

Happy to help :) I know that dictionary and array notation can be a bit confusing at times. And if the above helped, please mark the answer as "correct" so that it helps others too.

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