Hashable enum

FooBar.swift

enum FooBar: Hashable {
    
    case foo(String)
    case bar
    case baz
    
    // I want to use an enum as a dictionary key, so it needs to be Hashable,
    // will hardcoding hashValues like this lead to a disaster? What's a better alternative?
    public var hashValue: Int {
        switch self {
        case .foo(let str): return str.hashValue
        case .bar: return 0
        case .baz: return 1
        }
    }
    
    // Required for Equatable protocol
    public static func ==(lhs: FooBar, rhs: FooBar) -> Bool {
        switch (lhs, rhs) {
        case (.bar, .bar): return true
        case (.baz, .baz): return true
        case (.foo(let lhsStr), .foo(let rhsStr)): return lhsStr == rhsStr
        default: return false
        }
    }
}