Print Keychain Result Code which is an OSStatus used with various services such as Keychain

printKeychainResultCode.swift

    // MARK: - Internal -

    internal func printResultCode(resultCode: OSStatus) {
        // See: https://www.osstatus.com/
        switch resultCode {
        case errSecSuccess:
            print("Keychain Status: No error.")
        case errSecUnimplemented:
            print("Keychain Status: Function or operation not implemented.")
        case errSecIO:
            print("Keychain Status: I/O error (bummers)")
        case errSecOpWr:
            print("Keychain Status: File already open with with write permission")
        case errSecParam:
            print("Keychain Status: One or more parameters passed to a function where not valid.")
        case errSecAllocate:
            print("Keychain Status: Failed to allocate memory.")
        case errSecUserCanceled:
            print("Keychain Status: User canceled the operation.")
        case errSecBadReq:
            print("Keychain Status: Bad parameter or invalid state for operation.")
        case errSecInternalComponent:
            print("Keychain Status: Internal Component")
        case errSecNotAvailable:
            print("Keychain Status: No keychain is available. You may need to restart your computer.")
        case errSecDuplicateItem:
            print("Keychain Status: The specified item already exists in the keychain.")
        case errSecItemNotFound:
            print("Keychain Status: The specified item could not be found in the keychain.")
        case errSecInteractionNotAllowed:
            print("Keychain Status: User interaction is not allowed.")
        case errSecDecode:
            print("Keychain Status: Unable to decode the provided data.")
        case errSecAuthFailed:
            print("Keychain Status: The user name or passphrase you entered is not correct.")
        default:
            print("Keychain Status: Unknown. (\(resultCode))")
        }
    }