https://developer.apple.com/documentation/combine/publishers/combinelatest
Publishers.CombineLatest | Apple Developer Documentation
A publisher that receives and combines the latest elements from two publishers.
apple developerpublishersdocumentation
https://xgrommx.github.io/rx-book/content/observable/observable_methods/combinelatest.html
combineLatest | RxJS - Javascript library for functional reactive programming.
javascript libraryrxjsfunctionalreactiveprogramming