V8 developers start working on ES6 generators for JavaScript

#1

Post by jlongster » Thu, Mar 28, 2013, 2:15 PM UTC

V8 developers start working on ES6 generators for JavaScript
code.google.com

Re: V8 developers start working on ES6 generators for JavaScript

#2

Post by jlongster » Thu, Mar 28, 2013, 2:27 PM UTC

Note the opportunity here: all your promises code immediately turns into this: http://taskjs.org/

Re: V8 developers start working on ES6 generators for JavaScript

#3

Post by surrealize » Thu, Mar 28, 2013, 2:34 PM UTC

The es wiki page linked in the bug doesn't say much about array/generator comprehensions, e.g.:

[for (x of a) for (y of b) x * y]

but those would be really nice as well.

A few months ago the ES committee decided to switch them from reading right-to-left (as in spidermonkey comprehensions, python, and haskell) to reading left-to-right (as in C#):

https://gist.github.com/dherman/b250d1fad15dbb5f77a5

Re: V8 developers start working on ES6 generators for JavaScript

#4

Post by jlongster » Thu, Mar 28, 2013, 2:45 PM UTC

Andy Wingo mentioned via twitter that he's working on it: https://twitter.com/andywingo/status/316644148532891648

Re: V8 developers start working on ES6 generators for JavaScript

#5

Post by olegp » Thu, Mar 28, 2013, 2:51 PM UTC

In the mean time you can use fibers with Node. I've been using them for StartHQ (http://starthq.com) via Common Node (https://github.com/olegp/common-node) and to be honest I don't see how I could have made it maintainable with promises, let alone no flow control library at all.

Re: V8 developers start working on ES6 generators for JavaScript

#6

Post by Mahn » Thu, Mar 28, 2013, 2:59 PM UTC

A bit offtopic, but: are all chromium & V8 team members Googlers? just wondering, chromium and V8 are both open source, but I've never head of any major contributors other than Google itself.

Re: V8 developers start working on ES6 generators for JavaScript

#7

Post by Yoric » Thu, Mar 28, 2013, 3:01 PM UTC

Ahaha, finally!

I have been waiting to use this feature on the web, well, since Mozilla implemented it, which must have been at least 5 years ago.

Re: V8 developers start working on ES6 generators for JavaScript

#8

Post by evilpie » Thu, Mar 28, 2013, 3:05 PM UTC

Mahn wrote: post #6

A bit offtopic, but: are all chromium & V8 team members Googlers? just wondering, chromium and V8 are both open source, but I've never head of any major contributors other than Google itself.

From what I gathered (ie. talking to mraleph) v8 is mostly just Google employees. I can't speak about Chromium. The contributor situation is not vastly different for SpiderMonkey or JSC. I am usually the only contributor, besides 1-3 others that sometimes work on SpiderMonkey.

Edit: I think some ports are maintained from people outside Google. It's not really easy to tell, because most people have @chromium addresses.

Re: V8 developers start working on ES6 generators for JavaScript

#9

Post by firefoxman1 » Thu, Mar 28, 2013, 3:07 PM UTC

Yoric wrote: post #7

Ahaha, finally! I have been waiting to use this feature on the web, well, since Mozilla implemented it, which must have been at least 5 years ago.

Why didn't ecma just use Mozilla's implementation?

Re: V8 developers start working on ES6 generators for JavaScript

#10

Post by [deleted] » Thu, Mar 28, 2013, 3:11 PM UTC

evilpie wrote: post #8

Mahn wrote: post #6

A bit offtopic, but: are all chromium & V8 team members Googlers? just wondering, chromium and V8 are both open source, but I've never head of any major contributors other than Google itself.

From what I gathered (ie. talking to mraleph) v8 is mostly just Google employees. I can't speak about Chromium. The contributor situation is not vastly different for SpiderMonkey or JSC. I am usually the only contributor, besides 1-3 others that sometimes work on SpiderMonkey. Edit: I think some ports are maintained from people outside Google. It's not really easy to tell, because most people have @chromium addresses…

[deleted]