SwiftUI force-unwrap

January 11, 2022

init() {
    let locations = ChurchLocationsDataService.locations
    self.locations = locations
    self.mapLocation = locations.first!
    self.updateMapRegion(location: locations.first!)
}

Guys, tell me how I can safety unwrap this?

I’m trying to do this, but I get an error

init() {
    let locations = ChurchLocationsDataService.locations
    self.locations = locations
    guard self.mapLocation = locations.first else { return }
    guard self.updateMapRegion(location: locations.first) else { return }
}

>Solution :

You can simply provide a default if locations.first! fails:

init() {
    self.locations = ChurchLocationsDataService.locations
    // If locations.first fails, you can simply use some default
    let firstLocation = ChurchLocationsDataService.locations.first ?? CLLocation(latitude: 0, longitude: 0)
    self.mapLocation = firstLocation
    self.updateMapRegion(location: firstLocation)
}

You can’t use the guard statements and return because the init() requires that everything be initialized. Failing in a guard means that isn’t the case.