Example of Filtering Duplicates from Array Swift

filterArrayExample.swift

// Swift 3   

func setupBeaconRegions() {
    
        // Use the .filterDuplicates function on an array of beacons to create a new array of only unique UUID's
        let beaconRegions: [iBeaconItem] = iBeacons.filterDuplicates { $0.uuid == $1.uuid && $0.uuid == $1.uuid }
        
        // Iterate through new array that only contains unique UUIDs and start ranging those
        for beacon in beaconRegions {
            startRangingBeacon(beacon)
        }
    }