Sometimes you might be unable to create an observed object using the @ObservedObject annotation, for example if you need to use the object in the init() function of a view. When this happens there is a different way of creating an observed object, which is by using the ObserverObject initializer:

var ProjectView: View {
    @ObservedObject let project: Project

    init(project: Project) {
        _project = ObservedObject(initialValue: project)
    }

    var body: some View {
        // ...
    }
}

Note the underscore in front of _project, this is basically telling Swift to replace the underlying variable created by the @ObservedObject annotation.

You can also apply the same principle to other annotations such as @State or @FetchRequest.