November 2013
Intermediate to advanced
148 pages
3h 12m
English
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Yielding Control with Generators
ECMAScript Harmony introduces a new concept called a generator. A generator is like a function except that you can suspend its execution and resume later.
This feature isn’t quite ready for prime time, and you’ll need a version of Node higher than 0.10.x to try it out (unstable 0.11, for example). However, this is the direction ECMAScript is heading, and it’ll be production-ready before you know it.
Once a regular JavaScript function starts executing, it can finish in one of two ways. Either it finishes normally by getting to the end or hitting a return statement, or it finishes abnormally, throwing an exception. In both cases, the function will run to conclusion.
Generators are different. With a generator, you ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.