We now have imperative capabilities in App.Formulas!
This video is about using imperative code in Power Apps formulas. Here's an outline:
0:00 Imperative code in app formulas
2:25 App formulas vs. app on start
4:14 Named expressions
11:48 User-defined functions
15:16 User-defined types
26:47 User-defined functions with types
29:02 Converting untyped objects to typed objects
44:25 Custom connectors