Error handling in Swift 5.

Error handling.swift

//
// Error handling
//

// Create error
enum InputError: Error {
    case EmptyName
}

// Create function
func nameInput(name: String) throws -> String {
    if name.isEmpty {
        throw InputError.EmptyName
    }
    return name
}

// Call the function
do {
    let user = try nameInput(name: "")
    print("Created user with name: \(user)")
} catch {
    print("User creation failed with error: \(error)")
}