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Transformation operator: repeat

1:28 rx PRO

Operator repeat() is somewhat similar to retry(), but is not for handling operators. In this lesson we learn how repeat works.

Error handling operator: catch

5:24 rx PRO

Most of the common RxJS operators are about transformation, combination or filtering, but this lesson is about a new category, error handling operators, and its most important operator: catch().

Filtering operators: throttle and throttleTime

2:48 rx PRO

Debounce is known to be a rate-limiting operator, but it's not the only one. This lessons introduces you to throttleTime and throttle, which only drop events (without delaying them) to accomplish rate limiting.

Transformation operators: delay and delayWhen

4:22 rx PRO

This lessons teaches about delay and delayWhen: simple operators that time shift each emission from the source Observable by a specified amount of time.

Transformation operator: scan

5:21 rx PRO

All of the combination operators take two or more observables as input. These operators may also be alternatively called "vertical combination operators", because of how they work in a marble diagram. Next, we will learn about scan(), which is an important "horizontal combination operator".

Combination operator: withLatestFrom

4:02 rx PRO

Operator combineLatest is not the only AND-style combinator. In this lesson we will explore withLatestFrom, another AND-style combination operator, and how it works essentially as map() operator, with some combination properties.

Combination operator: merge

3:57 rx PRO

In the category of combination operators, concat executes Observables sequentially, while merge executes them in parallel. This lesson will teach you how the merge operator is an OR-style combination operator that blends two or more Observables together.

Filtering operators: takeLast, last

3:10 rx PRO

Operators take(), skip(), and first() all refer to values emitted in the beginning of an Observable execution. In this lesson we will see similar operators which refer instead to the end of an Observable execution, such as takeLast().

Filtering operator: filter

2:06 rx PRO

This lesson introduces filter: an operator that allows us to let only certain events pass, while ignoring others.

Transformation operator: map and mapTo

3:34 rx PRO

We made our first operator called multiplyBy, which looks a bit useful, but in practice we don't need it because it's too specific: it only does simple multiplication on numbers. In this lesson we will see how the map() operator is useful for any calculation on delivered values.

What RxJS operators are

5:38 rx

We have covered the basics of what is Observable.create, and other creation functions. Now lets finally dive into operators, which are the focus of this course. We will see how operators are simple pure functions attached to the Observable type.

Marble diagrams in ASCII form

4:29 rx PRO

There are many operators available, and in order to understand them we need to have a simple way of communicating how they transform a source Observable into a result Observable over time. Throughout this course we are going to see the so-called marble diagrams.

Utility operator: do

4:25 rx PRO

We just saw map which is a transformation operator. There are a couple of categories of operators, such as filtering, combination, flattening, etc. One of these categories is the utility operators. The most important utility operator is `do`, useful for debugging.

Filtering operators: take, first, skip

2:51 rx PRO

There are more operators in the filtering category besides filter(). This lesson will teach how take(), first(), and skip() are simply operators to ignore or pass a certain amount of events from the source Observable.

Combination operators: concat, startWith

6:22 rx PRO

Some Observables may complete, and we may want to append another Observable to the one which just completed. This lesson teaches you how to use the concat() operator for either appending or prepending, and how the shortcut operator startWith() is an easy way of prepending values to an Observable.

Combination operator: combineLatest

4:21 rx PRO

While merge is an OR-style combination operator, combineLatest is an AND-style combination operator. This lesson explains what AND-style combination means, and how you can join values from two or more Observables in a formula.

Combination operator: zip

5:10 rx PRO

CombineLatest and withLatestFrom are both AND-style combination operators. In this lesson, we will learn about zip, our last AND-style combinator. It uses the n-th value of each member Observable to produce the n-th output value.

Transformation operator: buffer

5:17 rx PRO

This lesson will teach you about another horizontal combination operator: buffer and its variants. Buffer groups consecutive values together, emitting the output as an array. The buffer variants and their arguments allow to specify when to close the buffers.

Transformation operators: debounce and debounceTime

5:21 rx PRO

Debounce and debounceTime operators are similar to delayWhen and delay, with the difference that they may drop some emissions. This lesson teaches you how debounce works and where is it useful, for instance when building a type-ahead UI.

Filtering operators: distinct and distinctUntilChanged

4:34 rx PRO

Operator distinct() and its variants are an important type of Filtering operator. This lessons shows how they work and in what cases are they useful.

Error handling operator: retry and retryWhen

4:01 rx PRO

Besides catch, the other commonly used error handling operator is retry(). This lessons teaches how retry() and retryWhen() detect errors and how they re-subscribe to the source, besides highlighting its real-world applications.

More operators and conclusion

1:06 rx PRO

Let's recap the categories of operators covered by the series. This lesson also shows what was not taught, and what comes next as learning material.

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