Combine in Networking

These are notes I’ve taken while watching the video of the corresponding session. They don’t have all the information contained in the video, but I’ve tried to still write the main points for my personal use cases.

Added debounce function as baseline .debounce(0.2) .removeDuplicates() .filter{$0.count >= 3}

Inside the cell class:

var subscriber: AnyCancellable?

in prepareForReuse: subscriber?.cancel()

In the VC when we create the cell: var request = URLRequest(url: url) cell.subscriber = pubSession.dataTaskPublisher(for:request).tryCatch {error -> UrlSession.DataTaskPublisher in //handle error }.tryMap{data,response -> UIImage in //handle success } .retry(1)//avoid retry if possible .replaceError(with: placeholderImage) .receive(on: DispatchQueue.main) .assign(to: .itemImageView.image on:cell)

Source: Advances in Networking, Part 1