Map the inner value of a resource

[jonahlund]

Is it possible to map the inner value of a resource to another value? This could be beneficial in a few cases, like for example say i have a UserContext which wraps a Resource<(), Option<User>>, which would allow any component to access the resource and its various features, but this approach would mean that User has to be cloned which is not ideal, it would be more ideal to wrap Resource<(), Option<Rc<User>>> for the context to avoid cloning the user, but the resource can't return Rc since its not serializable, which is where it would be beneficial to map the resource value to another value

[gbj]

This seems to suggest something like Signal::derive(|| resource.map(|user| /* do something */)) would be appropriate for your use case.

I'd also note though that it's almost certainly the case that cloning User is not going to be significant relative to the overall cost of doing things like rendering your UI in the DOM. (I'm assuming User is something like a handful of string fields)

Also, Rc is serializable, you just need to have the rc feature enabled on serde.