Is there a way to access dictionary keys in Swift 2 using an index?
var dict = ["item1":1, "item2":2, "item3":3]
dict.keys[0]
results in the error:
15:29: note: overloads for 'subscript' exist with these partially matching parameter lists: (Base.Index), (Range), (Self.Index) print("key=" + dict.keys[i])
I saw an examples from August (Swift: dictionary access via index) doing this:
dict.keys.array[0]
At least in Swift 2, there isn't an array object on dictionary keys.
In Swift 2 the equivalent of dict.keys.array would be Array(dict.keys):
let dict = ["item1":1, "item2":2, "item3":3]
let firstKey = Array(dict.keys)[0] // "item3"
Note: of course, as dictionaries are unordered collections, "first key" of the resulting array may not have a predictable value.
do not rely on order of items in a dictonary, using array directly would be better in your case, you can also handle key/value in array with making array units objects.
