Migration from RxSwift 1.9 to RxSwift 2.0

The migration should be pretty straightforward. Changes are mostly cosmetic, so all features are still there.

  • Find replace all >- to .
  • Find replace all variable to shareReplay(1)
  • Find replace all catch to catchErrorJustReturn
  • Find replace all returnElement to Observable.just
  • Find replace all failWith to Observable.error
  • Find replace all never to Observable.never
  • Find replace all empty to Observable.empty
  • Since we’ve moved from >- to ., free functions are now methods, so use .switchLatest(), .distinctUntilChanged(), … instead of >- switchLatest, >- distinctUntilChanged
  • We’ve moved from free functions to extensions so it’s now [a, b, c].concat(), .merge(), … instead of concat([a, b, c]), merge(sequences)
  • Similarly, it’s now subscribe { n in ... }.addDisposableTo(disposeBag) instead of >- disposeBag.addDisposable
  • The method next on Variable is now value setter
  • If you want to use UITableView and/or UICollectionView, this is the basic use case now:
  1. viewModel.rows
  2.     .bindTo(resultsTableView.rx_itemsWithCellIdentifier("WikipediaSearchCell", cellType: WikipediaSearchCell.self)) { (_, viewModel, cell) in
  3.         cell.viewModel = viewModel
  4.     }
  5.     .addDisposableTo(disposeBag)

If you have any doubts about how some concept in RxSwift 2.0 works, check out the Example app or playgrounds.