function*

[Amit Zur]

Hi,
I'm running through the devtools source and see a lot of function declarations like this:
function*() {...}

Can you tell me what this syntax is all about?

[Nicolas B. Pierron]

These functions are generators [1][2]. To make it simple, you can interupt
them and resume them on yield statements. Which is quite useful when
combined with for-of loops.

[1] https://hacks.mozilla.org/2015/05/es6-in-depth-generators/
[2]
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*

--
Nicolas B. Pierron

[Dan Callahan]

Those are generator functions, which were (finally!) standardized in ES6 /
ES2015.

David Walsh has a good intro at http://davidwalsh.name/es6-generators, and
Jason Orendorff wrote about them on Hacks last month:
https://hacks.mozilla.org/2015/05/es6-in-depth-generators/

On Fri, Jun 19, 2015 at 10:03 AM, Amit Zur <sendwi...@gmail.com> wrote:

> Hi,
> I'm running through the devtools source and see a lot of function
> declarations like this:
> function*() {...}
>
> Can you tell me what this syntax is all about?

> _______________________________________________
> dev-developer-tools mailing list
> dev-devel...@lists.mozilla.org
> https://lists.mozilla.org/listinfo/dev-developer-tools
>

[Victor Porof]

Generators! [0]

Most often used with Task [1], at least until async/await land in ES7.

[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*
[1] http://taskjs.org/