davidsteppenbeck / observableuserdefault Goto Github PK

I'm trying to use this library based on the examples provided, but I get the following error:

// Error: '@ObservableUserDefault' unable to extract the required values from the argument
@ObservableUserDefault(.init(key: "systemPrompt", defaultValue: "You are a helpful assistant.", store: UserDefaults(suiteName: "\(appGroupIdentifier).settings")!))
@ObservationIgnored
var systemPrompt: String

I noticed that optional types work when using ObservableUserDefault without metadata, but fail to extract type information when a key is provided along with an optional type. This is important because providing keys is necessary for backwards compatibility, while most of our user defaults are optional. Relatedly, it would be nice if the api allowed optional defaultValue and store arguments to match the current AppStorage apis.

Successful

@ObservableUserDefault
@ObservationIgnored
public var lastViewed: Date?

Error

@ObservableUserDefault(.init(key: "LastViewedKey", defaultValue: nil, store: .standard))
@ObservationIgnored
public var lastViewed: Date?

The error is of the message Generic parameter 'DefaultValue' could not be inferred.

Attempting to provide type hinting gives a different error:

Error with hinting

@ObservableUserDefault(.init(key: "LastViewedKey", defaultValue: nil as Date?, store: .standard))
@ObservationIgnored
public var lastViewed: Date?

The error message of the above is '@ObservableUserDefault' unable to extract the required values from the argument

Thanks for the macro!

Is there a trick to getting this to work with an array? At the moment I simply using the following method:

var favorites: [String] { get { access(keyPath: \.favorites) return UserDefaults.standard.value(forKey: "favorites") as? [String] ?? [] } set { withMutation(keyPath: \.favorites) { UserDefaults.standard.set(newValue, forKey: "favorites") } } }

Hello,

This library misses a major functionality of “observability”, which is notifying of changes that occur to the observed value from different processes.

Cheers

Please, add support enums for macro