Files

operators.csv

1	RxSwift	Combine	Notes
2	amb()	❌
3	asObservable()	eraseToAnyPublisher()
4	asObserver()	❌
5	bind(to:)	`assign(to:on:)`	Assign uses a KeyPath which is really nice and useful. RxSwift needs a Binder / ObserverType to bind to.
6	buffer	buffer
7	catchError	catch
8	catchErrorJustReturn	replaceError(with:)
9	combineLatest	combineLatest, tryCombineLatest
10	compactMap	compactMap, tryCompactMap
11	concat	append, prepend
12	concatMap	❌
13	create	❌	Apple removed AnyPublisher with a closure in Xcode 11 beta 3 :-(
14	debounce	debounce
15	debug	print
16	deferred	Deferred
17	delay	delay
18	delaySubscription	❌
19	dematerialize	❌
20	distinctUntilChanged	removeDuplicates, tryRemoveDuplicates
21	do	handleEvents
22	elementAt	output(at:)
23	empty	Empty(completeImmediately: true)
24	enumerated	❌
25	error	Fail
26	filter	filter, tryFilter
27	first	first, tryFirst
28	flatMap	flatMap
29	flatMapFirst	❌
30	flatMapLatest	switchToLatest
31	from(optional:)	Optional.Publisher(_ output:)
32	groupBy	❌
33	ifEmpty(default:)	replaceEmpty(with:)
34	ifEmpty(switchTo:)	❌	Could be achieved with composition - replaceEmpty(with: publisher).switchToLatest()
35	ignoreElements	ignoreOutput
36	interval	❌
37	just	Just
38	map	map, tryMap
39	materialize	❌
40	merge	merge, tryMerge
41	merge(maxConcurrent:)	flatMap(maxPublishers:)
42	multicast	multicast
43	never	Empty(completeImmediately: false)
44	observeOn	receive(on:)
45	of	Sequence.publisher	`publisher` property on any `Sequence` or you can use `Publishers.Sequence(sequence:)` directly
46	publish	makeConnectable
47	range	❌
48	reduce	reduce, tryReduce
49	refCount	autoconnect
50	repeatElement	❌
51	retry, retry(3)	retry, retry(3)
52	retryWhen	❌
53	sample	❌
54	scan	scan, tryScan
55	share	share	There’s no replay or scope in Combine. Could be “faked” with multicast.
56	skip(3)	dropFirst(3)
57	skipUntil	drop(untilOutputFrom:)
58	skipWhile	drop(while:), tryDrop(while:)
59	startWith	prepend
60	subscribe	sink
61	subscribeOn	subscribe(on:)	RxSwift uses Schedulers. Combine uses RunLoop, DispatchQueue, and OperationQueue.
62	take(1)	prefix(1)
63	takeLast	last
64	takeUntil	prefix(untilOutputFrom:)
65	throttle	throttle
66	timeout	timeout
67	timer	Timer.publish
68	toArray()	collect()
69	window	collect(Publishers.TimeGroupingStrategy)	Combine has a TimeGroupingStrategy.byTimeOrCount that could be used as a window.
70	withLatestFrom	❌
71	zip	zip