In this article, I’m going to cover sequence operators. The sequence operators are very easy to understand because the publisher itself is the sequence itself. So sequence operator works usually on the collection like an array or a set and they are finite sequences. You must know that sequence operators…

In this article, let’s go ahead and take a look at another combining operator. combineLastest(). This operator is a little bit different. combineLatest() is basically going to combine two different publishers. The great thing is that both of those publishers can have different types. Do you know merge() operator? It’s…

Let’s take a look at zip() operator. What zip() is doing is that it’s going to pair different elements or different items from the publisher. But it’s not going to wait for the latest element from the publisher. zip() operator is simply going to pick and tries to pair depending…

Let’s go ahead and take a look at another combining operator and this is called merge operator. merge() operator, just as the name implies, is going to merge the different events from different publishers. merge() let publisher1 = PassthroughSubject<Int, Never>() let publisher2 = PassthroughSubject<Int, Never>() publisher1.merge(publisher2) .sink { print($0) } publisher1.send(0)…

Let’s talk about a little bit of a more complicated combination operator, switchToLatest(). As the name suggests, switchToLatest() operator allows you to actually switch to a different publisher on the fly. switchToLastest() let publisher1 = PassthroughSubject<String, Never>() let publisher2 = PassthroughSubject<String, Never>() // Parent Publisher let publishers = PassthroughSubject<PassthroughSubject<String, Never>, Never>

Do you know prepend() operator? prepend() operator allows you to add additional elements before the sequence. But append() operator is adding new elements at the end of the operator. append() let numbers = (1...10).publisher numbers .append(99, 100) .sink { print($0) // 1,2,3,4,5,6,7,8,9,10,99,101 } numbers .append([99, 100]) .sink { print($0) //…

In this tutorial, you are going to look at prepend() operator. Just as the name implies, the prepend() operator is going to append element in your sequence. A publisher let numbers = (1...5).publisher numbers.sink { print($0) // 1,2,3,4,5 } I created a range from 1 to 5 and made it a publisher…

Let’s go ahead and take a look at some filter operators that are going to limit the value. What kind of values or what amount of values passes through. One of the first operators that you are going to look at is the prefix operator. prefix() let numbers = (1...10).publisher numbers…

Let’s go ahead and take a look at drop(untilOutputFrom: ) filtering Operator. So the operator in question is drop(untilOutputFrom: ) and it’s going to drop the events or the value from a sequence until it gets an output from another publisher. It’s a little bit hard to understand. drop(untilOutputFrom:) let taps…