how to declare a dictionary inside two arrays - swift

Question

How can I declare a multi array outside its function so i can use it outside its function? I know how to do a regular array and a regular dictionary, but not both.
IhelpersCoordinates = [
[
"Latitude":IhelpersLatitude,
"Longitude": IhelpersLongitude,
"userId": IhelpersUid
]
]
The code above is in the viewDidLoad. I'm trying to use it in the user did update function. I know with a regular array i have to set the array outside of the function (example- var IhelpersCordinates = []). I'm trying to figure out how i would do the same with the array above.

Answer 1

As I understand your problem correctly you can declare a dictionary inside array use [[String:Double]].
class YourClass {
var IhelpersCoordinates : [[String:Double]] = [
[
"Latitude": 53.02,
"Longitude": 19.04,
"userId": 123
],
[
"Latitude": 51.02,
"Longitude": 20.04,
"userId": 124
],
]
func exampleFunc(){
print(IhelpersCoordinates[0]["Latitude"]) // this will print 53.02
print(IhelpersCoordinates.count) // this will print 2, because it's 2 elements array of dictionaries.
}
}
Edited base on comment
If you want to declare an dictionary inside an array inside an array try this code :
class YourClass {
var IhelpersCoordinates : Array<Array<[String:Double]>> = [
[
[
"Latitude": 53.02,
"Longitude": 19.04,
"userId": 123
],
],
[
[
"Latitude": 53.02,
"Longitude": 19.04,
"userId": 123
],
],
]
func exampleFunc(){
print(IhelpersCoordinates[0][0]["Latitude"])
print(IhelpersCoordinates.count)
}
}
EDIT 2
class YourClass {
public var IhelpersCoordinates = Array<Array<[String:Double]>>()
func calculate() {
var element = [
[
"Latitude": 53.02,
"Longitude": 19.04,
"userId": 123
]
]
var element1 = [
[
"Latitude": 54.02,
"Longitude": 19.04,
"userId": 122
]
]
self.IhelpersCoordinates.append(element)
self.IhelpersCoordinates.append(element1)
}
func printValues() {
print(self.IhelpersCoordinates.count)
}
}
Hope it help you