RxJS

Learning Reactive Extensions in JavaScript

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Using Observable.create for fine-grained control

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Using the component in the main() function

RxJS Observables vs Promises

Throttled Buffering in RxJS

P

Hello World in Cycle.js

An interactive counter in Cycle.js

Body-Mass Index calculator built in Cycle.js

Reactive Programming - What is RxJS?

Model-View-Intent pattern for separation of concerns

Multiple independent instances of a component

Reactive Programming - Async requests and responses in RxJS

P

Sync Requests with RxJS and Angular

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Error Handling in RxJS

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Introduction to the ConnectableObservable and using publish().refCount() in RxJS

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Aggregating Streams With Reduce And Scan using RxJS

P

What Is RxJS?

Stream Processing With RxJS vs Array Higher-Order Functions

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Creating An Observable with RxJS

Toggle A Stream On And Off With RxJS

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Our first component: a labeled slider

Demystifying Cold and Hot Observables in RxJS

Overview of Cycle.js

Exporting values from components through sinks

Isolating component instances

Reacting to multiple inputs using RxJS's combineLatest

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RxJS - map vs flatMap

rx tutorial about Using Observable.create for fine-grained control

Using Observable.create for fine-grained control

3:55 rx PRO

Sometimes, the helper methods that RxJS ships with such as fromEvent, fromPromise etc don't always provide the exact values you want & you end up having to do extra work to force them into the shape you require. For more fine-grained control you can use Observable.create which allows you to project only the values which matter to you.

rx tutorial about Using the component in the main() function

Using the component in the main() function

1:57 rx

We have made a Cycle.js app for generic labeled slider which can be configured through props, but how can we reuse it in other Cycle.js apps? This lesson shows how we can embed any Cycle program inside a larger Cycle program in a very simple manner.

rx tutorial about RxJS Observables vs Promises

RxJS Observables vs Promises

6:53 rx

Let's look at some of the basic features of RxJS Observables as asynchronous primitives, by comparing them to their cousins, Promises.

rx tutorial about Throttled Buffering in RxJS

Throttled Buffering in RxJS

3:41 rx PRO

Capturing every event can get chatty. Batching events with a throttled buffer in RxJS lets you capture all of those events and use them responsibly without overloading a subscriber downstream.

rx tutorial about Hello World in Cycle.js

Hello World in Cycle.js

4:44 rx

Now you should have a good idea what Cycle.run does, and what the DOM Driver is. In this lesson, we will not build a toy version of Cycle.js anymore. Instead, we will learn how to use Cycle.js to solve problems. We will start by making a simple Hello world application.

rx tutorial about An interactive counter in Cycle.js

An interactive counter in Cycle.js

8:08 rx

This lesson shows how we can create a more interactive app: a counter display with buttons to increment and decrement it. This reveals how we can use the RxJS scan() operator to remember past values and keep state.

rx tutorial about Body-Mass Index calculator built in Cycle.js

Body-Mass Index calculator built in Cycle.js

6:40 rx

So far we have been writing very small apps in Cycle.js. Let's start growing the size of the apps we build. This time, we will see how to build a simple Body-Mass Index Calculator.

rx tutorial about Reactive Programming - What is RxJS?

Reactive Programming - What is RxJS?

4:31 rx

This lesson introduces Reactive Programming using RxJS in simple terms, with a concrete example and no scary terminology.

rx tutorial about Model-View-Intent pattern for separation of concerns

Model-View-Intent pattern for separation of concerns

3:17 rx

We built the BMI calculator all inside one function: main(). As apps scale, we don't want main() to grow. We need an organized pattern where each function focuses on doing one thing. This lesson shows how we can easily refactor the main() function into three parts: Intent, Model, and View.

rx tutorial about Multiple independent instances of a component

Multiple independent instances of a component

4:31 rx

Once we have a labeled slider component inside the main function, we should be able to create another labeled slider. This lesson teaches how to accomplish that, and make sure those two instances work independently of each other.

rx tutorial about Reactive Programming - Async requests and responses in RxJS

Reactive Programming - Async requests and responses in RxJS

7:14 rx PRO

In this lesson we start building a small UI widget: suggestions box displaying users to follow in Github. We will learn how to perform network requests to a backend using RxJS Observables.

angularjs tutorial about Sync Requests with RxJS and Angular

Sync Requests with RxJS and Angular

4:56 angularjs PRO

When you implement a search bar, the user can make several different queries in a row. With a Promise based implementation, the displayed result would be what the longest promise returns. Here we see how RxJs can be used to avoid this problem.

rx tutorial about Error Handling in RxJS

Error Handling in RxJS

5:12 rx PRO

Get your code back on the happy path! This lesson covers a variety of ways to handle exceptions thrown by Observables in RxJS. Operators covered are: catch, onErrorResumeNext, retry and retryWhen

rx tutorial about Introduction to the ConnectableObservable and using publish().refCount() in RxJS

Introduction to the ConnectableObservable and using publish().refCount() in RxJS

3:56 rx PRO

An RxJS cold Observable can be made hot by declaring it with .publish().refCount(). What does publish() do? What does refCount() do? This lesson introduces the ConnectableObservable, and how to use it with publish and refCount.

rx tutorial about Aggregating Streams With Reduce And Scan using RxJS

Aggregating Streams With Reduce And Scan using RxJS

3:47 rx PRO

What is the RxJS equivalent of Array reduce? What if I want to emit my reduced or aggregated value at each event? This brief tutorial covers Observable operators reduce() and scan(), their differences and gotchas.

rx tutorial about What Is RxJS?

What Is RxJS?

2:31 rx

RxJS Observables represent a collection of values over time, and can be accessed in familiar ways similar to arrays. RxJS can be thought of as underscore or lodash for asynchronous operations!

rx tutorial about Stream Processing With RxJS vs Array Higher-Order Functions

Stream Processing With RxJS vs Array Higher-Order Functions

3:49 rx PRO

Higher order Array functions such as filter, map and reduce are great for functional programming, but they can incur performance problems. This lesson illustrates how stream processing with RxJS can save you from these pitfalls.

rx tutorial about Creating An Observable with RxJS

Creating An Observable with RxJS

6:53 rx

Let's learn the basic anatomy of an RxJS Observable by creating one from scratch. In this lesson, we create a simple Observable. It covers handling asynchronicity, emitting values, observable completion and error handling.

rx tutorial about Toggle A Stream On And Off With RxJS

Toggle A Stream On And Off With RxJS

3:52 rx PRO

This lesson covers how to toggle an observable on and off from another observable by showing how to use a checkbox as a toggle for a stream of data.

rx tutorial about Our first component: a labeled slider

Our first component: a labeled slider

8:05 rx

We are starting to get a better architecture for these UI apps. But we still have a problem of repeating code for the sliders, since they share so much in common in looks and functionality. This lessons shows how we can create a generic labeled slider as a main() function receiving properties as sources.

rx tutorial about Demystifying Cold and Hot Observables in RxJS

Demystifying Cold and Hot Observables in RxJS

3:50 rx

Have you ever been caught by complications surrounding Cold and Hot Observables with RxJS (Reactive Extensions for JavaScript)? Worry no more, there is only one "catch" to understand, and then the whole issue will make sense to you when developing reactive applications.

rx tutorial about Overview of Cycle.js

Overview of Cycle.js

2:28 rx

This lesson shows what can be learned next as a continuation of this course, and gives a recap on the core concepts: main for pure logic, drivers for side effects, run() to connect main and drivers, sources for read effects, sinks for write effects, and nesting Cycle.js apps to work as components.

rx tutorial about Exporting values from components through sinks

Exporting values from components through sinks

3:30 rx

Our app is not yet a BMI calculator, because it only has two sliders, but doesn't show the calculated BMI number. In this lesson we will learn how to export any stream from a child component and use it in the parent component, in order to display the BMI calculation on the DOM.

rx tutorial about Isolating component instances

Isolating component instances

3:39 rx

We added classNames to pre-processing and post-processing steps when calling the LabeledSlider, in order to instances independent of each other. It would be better if we could hide these steps away. This lesson introduces the isolate() helper function to achieve that.

rx tutorial about Reacting to multiple inputs using RxJS's combineLatest

Reacting to multiple inputs using RxJS's combineLatest

7:36 rx PRO

There are certain situations in which you’ll want access to the latest values from multiple Observables whenever any one of them produces a value. This is exactly what combineLatest was designed for, and in this lesson we’ll use it to build up an image url that requires values from 3 different inputs - triggered every time any one of them change.

rx tutorial about RxJS - map vs flatMap

RxJS - map vs flatMap

2:35 rx

What is the difference between map and flatMap? How do you take an Observable of Observables and output a single stream? This lesson is a quick look at map and flatMap and how they relate.

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