Beginning RxSwift - Part 27: Transforming | Ray Wenderlich Videos

Continue working on the GitFeed app from the previous video by implementing a way to retrieve saved data.

This is a companion discussion topic for the original entry at

Why is the type of ‘lastModified’ a Variable<NSString?> ,

not a NSString?

I think the result is the same.

@scotteg Can you please help with this when you get a chance? Thank you - much appreciated! :]

Hi @papaya0033, yes, you could make lastModified a mutable (var) Optional<NSString>, i.e., NSString?. Aside from wanting to present these examples using Rx as much as possible/reasonable from a learning perspective, by implementing it as a Variable, you are able to work with its underlying value similar to a regular type instance, but also have the option to subscribe to it down the road.