How to remove element from array in Swift based on value?

Question

I have the following code:

func mapView(mapView: GMSMapView, didTap marker: GMSMarker){
let lat: CLLocationDegrees = marker.position.latitude
let lng: CLLocationDegrees = marker.position.longitude
var formattedCoordinate = CLLocationCoordinate2D(latitude: lat,longitude: lng)
markersArray.remove(formattedCoordinate)
self.clean()
}

func mapView(mapView: GMSMapView, didBeginDragging marker: GMSMarker){
let lat: CLLocationDegrees = marker.position.latitude
let lng: CLLocationDegrees = marker.position.longitude
var formattedCoordinate = CLLocationCoordinate2D(latitude: lat,longitude: lng)
markersArray.remove(formattedCoordinate)
}

As you can see I am trying to "remove" the "formattedCoordinate" from markersArray. I saw that there are options like .filter and other methods which enables removing an element at a specific index, but here I would like to remove that specific coordinate from the array. How do I do that?

Possible duplicate of [Array extension to remove object by value](http://stackoverflow.com/questions/24938948/array-extension-to-remove-object-by-value) — Martin R, Mar 31 '17 at 06:30
How is `markersArray` defined, what does it contain? What result do you get and what do you expect? — Martin R, Mar 31 '17 at 07:52
Array. It contains lat and long coordinates. I would like to remove one of those when a 'marker' was tapped. — konyv12, Mar 31 '17 at 07:54

score 0 · Answer 1 · answered Mar 31 '17 at 08:07

    markers = markers.filter({ (coordinateToRemove) -> Bool in
        return coordinateToRemove.latitude == formattedCoordinate.latitude && coordinateToRemove.longitude == formattedCoordinate.longitude
    })

I had the same problem solved it by rounding off the values of latitude and longitude(as they can be different by some decimal in formattedCoordinate Object) that you are comparing using

round(coordinateToRemove.latitude)

and comparing them separately.

Round off by how many digits? I don't want to lose precision. — konyv12, Mar 31 '17 at 08:09

How to remove element from array in Swift based on value?

1 Answers1