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Modern JavaScript Applications

You're reading from   Modern JavaScript Applications Keep abreast of the practical uses of modern JavaScript

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Product type Paperback
Published in Jul 2016
Publisher Packt
ISBN-13 9781785881442
Length 330 pages
Edition 1st Edition
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Author (1):
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Narayan Prusty Narayan Prusty
Author Profile Icon Narayan Prusty
Narayan Prusty
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Table of Contents (16) Chapters Close

Preface 1. Breaking into Microservices Architecture FREE CHAPTER 2. Building a Coupon Site 3. Communication between Browsers in Real Time 4. Building a Chatroulette 5. Bidirectional Communication in Real Time 6. Building a Live Score Site 7. Functional Reactive Programming 8. Building an Advanced Profile Search Widget 9. New Features of Bootstrap 4 10. Building User Interfaces Using React 11. Building an RSS Reader Using React and Flux 12. New Features of Angular 2 13. Building a Search Engine Template Using AngularJS 2 14. Securing and Scaling Node.js Applications Index

Combining and zipping


Bacon provides certain methods to combine and zip properties and EventStreams. There is a significant difference between combining and zipping.

When we combine properties, we always get a property, which will have an array of all source properties as its value. If we try to combine EventStreams, then they are first converted to properties before combining takes place. When there is a push in any one of the source properties, a new value is pushed into the resultant property. Combining starts after each of the source properties has a value pushed.

Here is an example to demonstrate combining. Place this code in the index.js file.

var x1 = new Bacon.Bus();
var x2 = new Bacon.Bus();
var x3 = new Bacon.Bus();

Bacon.combineAsArray(x1, x2, x3).onValue(function(value){
  console.log(value);
})

x1.push(0);
x1.push(1);
x2.push(2);
x3.push(3);
x3.push(4);
x1.push(5);

Here is the output of the code:

[1, 2, 3]
[1, 2, 4]
[5, 2, 4]

Zipping is different from combining. Zipping means that...

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