Swifty | networking stack designed to serve modern iOS apps | iOS library

Is there a Swifty way to detect the background color of a window in SwiftUI on macOS, that would work reliably regardless of the current theme (Dark Mode or Light Mode)?

For example, if one were to make a solid rectangle that "blends in" with the window's background, which color would they use?

This answer suggests the use of NSColor.xxxBackgroundColor: SwiftUI: Get the Dynamic Background Color (Dark Mode or Light Mode)

However, this doesn't quite work for me. Here's some test code (Xcode 12.5, Swift 5.4) that makes three rectangles of various NSColors. I am looking for the one that blends in with the background.

Originally I was looking to make an extension on Text for example:

My goal is to create a SwiftUI view that takes a String and automatically formats that text into Text views. The portion of the string that needs formatting is found using regex and then returned as a Range. This can be used to reconstruct the String once the formatting has been applied to the appropriate Text views. Since there could be multiple instances of text that needs to be formatted, running the formatting function should be done recursively.

Given the following structure below, I want to retrieve the 2nd product object given this shopName. I can only think of getting all the product objects with this query: Shop.find({ shopName: shopName}).select('products'). How can I modify it to achieve what I want, appreciate it!

Does anyone know here how to count amount of elements in all nested array of custom objects in Swift?

I.e. I have

[Comments] array which includes [Attachments] array. There may be 100 comments and 5 attachments in each of them. What is the most Swifty way to count all attachments in all comments? I tried few solutions like flatMap, map, compactMap, filter, reduce, but couldn't figure out how to achieve the desire result. The only one that worked for me was typical for in loop.

Given an input like so:

I am getting object in response of axios/ajax request. Now i want to add key value pair in that object how i Can do this.

Here is the object

Below there are three functions. The first one is the function that I need to refactor. Basically what I'm hoping for is something similar what can be achieved using Promise Kit but in this case using Swifts combine framework.

The second function loginWithFacebook() returns a AuthCredential. This AuthCredential needs to be passed on to the last functions which returns a type Future which is a similar return type to the main function (1st function).

My question is is there a way to achieve this in a Swifty way, similar to Promise Kit doing this operation: return loginWithFacebook().then {loginWithFirebase(:_)}

Yes, I know this question has been asked before, but the accepted answers do not work for me. Those answers did indeed fix the compiler error, but when I pass 'self' to the initializer of a class from within my ContentView.init method, and that class later calls a method on ContentView, the 'self' is not the correct instance. The callback, setVpnState sets the value of a @State variable, which should cause the UI to update. But it doesn't, and on inspection in lldb, it is clearly not the same 'self' (instance of ContentView).

Here is what I tried to do initially: