blocks|key|882617|text|是的，从0.11版本开始。享受吧！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|882618|http://wingolog.org/archives/2013/05/08/generators-in-v8|offset|length|882619|http://jlongster.com/A-Study-on-Solving-Callbacks-with-JavaScript-Generators|882620|entityMap|0|LINK|mutability|MUTABLE|url|1^0|0|0|1K|0|0|0|24|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|H|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]|O|$5|K|L|M|A|$N|G]]]]

Yes, since version 0.11. Enjoy!

<a href="http://wingolog.org/archives/2013/05/08/generators-in-v8" rel="noreferrer">http://wingolog.org/archives/2013/05/08/generators-in-v8</a>

<a href="http://jlongster.com/A-Study-on-Solving-Callbacks-with-JavaScript-Generators" rel="noreferrer">http://jlongster.com/A-Study-on-Solving-Callbacks-with-JavaScript-Generators</a>

blocks|key|882563|text|答案是“目前没有”，但Marcel似乎是我的英雄。让我们希望这会发生在某个地方：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|882564|https://groups.google.com/forum/#!msg/nodejs/BNs3OsDYsYw/oCsWBw9AWC0J+https://github.com/laverdet/node-fibers|offset|length|882565|entityMap|0|LINK|mutability|MUTABLE|url|https://groups.google.com/forum/#!msg/nodejs/BNs3OsDYsYw/oCsWBw9AWC0J|1|https://github.com/laverdet/node-fibers^0|0|0|1X|0|1Y|13|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]|$D|U|E|V|1|W]]|A|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]|N|$5|I|J|K|A|$L|O]]]]

The answer is "not currently" but Marcel seems to be my hero. Lets hope this goes somewhere:

<a href="https://groups.google.com/forum/#!msg/nodejs/BNs3OsDYsYw/oCsWBw9AWC0J" rel="noreferrer">https://groups.google.com/forum/#!msg/nodejs/BNs3OsDYsYw/oCsWBw9AWC0J</a> 
<a href="https://github.com/laverdet/node-fibers" rel="noreferrer">https://github.com/laverdet/node-fibers</a>

blocks|key|1097530|text|您可以在Node.js中使用生成器，但只能在0.11%2B中使用。Node.js+0.12+(稳定)现在可用。在节点的命令行参数中添加--harmony_generators或--harmony即可启用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1097531|使用Traceur，您可以将高级JavaScript编译为普通的JavaScript。您可以为node.js制作一个动态加载程序。由于它在上运行，并编译为普通的JavaScript，因此它可以在node.js+<+0.11以及浏览器中运行。|1097532|Facebook开发了一个只支持生成器的轻量级版本，叫做Regenerator。它的工作原理类似于Traceur。|1097533|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/google/traceur-compiler|1|https://facebook.github.io/regenerator/^0|1T|K|2E|9|0|2|7|0|0|S|B|1|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Y|8|@]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|H|3|I|5|6|7|12|8|@]|D|@$9|13|A|14|1|15]]|E|$]]|$1|J|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]]]

You can use generators in Node.js, but only in 0.11+. Node.js 0.12 (stable) is now available. Add <code>--harmony_generators</code> or <code>--harmony</code> to the command line parameters of node to enable it.

With <a href="https://github.com/google/traceur-compiler" rel="nofollow" title="Traceur JavaScript compiler">Traceur</a>, you can compile advanced JavaScript to vanilla JavaScript. You could make a loader for node.js that does this on-the-fly. Since it runs on, and compiles to vanilla JavaScript, it runs in node.js &lt; 0.11 as well as in the browser.

Facebook has developed a lighter version that only supports generators, called <a href="https://facebook.github.io/regenerator/" rel="nofollow">Regenerator</a>. It works similarly to Traceur.

blocks|key|1097576|text|显然不是在当前的稳定版本中。但是，您可以使用node-fibers+%2B+promises来实现相同的功能。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1097577|下面是我的实现：|1097578|var+fiber+=+require('fibers');

module.exports.yield+=+function+(promise)+{

++++var+currentFiber+=+fiber.current;
++++promise
++++++++.then(function+(value)+{
++++++++++++currentFiber.run(value);
++++++++})
++++++++.otherwise(function+(reason)+{
++++++++++++currentFiber.throwInto(reason);
++++++++});

++++return+fiber.yield();
};
module.exports.spawn+=+function+(makeGenerator)+{
++++fiber(function+()+{
++++++++makeGenerator.apply(this,+Array.prototype.slice.call(arguments,+1));
++++}).run();
};|code-block|syntax|javascript|1097579|以及如何工作的示例代码：(query.find返回一个promise)|1097580|++++++++var+generators+=+require('./utils/generators');
++++++++var+query+=+require('./utils/query');

++++++++generators.spawn(function+()+{
++++++++++++try+{
++++++++++++++++var+field1+=+generators.yield(query.find('user',+{+_id+:+'1'+}));
++++++++++++++++var+field2+=+generators.yield(query.find('user',+{+_id+:+'2'+}));
++++++++++++++++console.log('success',+field1[0]._id,+field2[0]._id);
++++++++++++}
++++++++++++catch+(e)+{
++++++++++++++++console.error('error',+e);
++++++++++++}
++++++++});|1097581|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Apparently not in the current stable version. You can however achieve the same using node-fibers + promises.

Here is my implementation:

<pre><code>var fiber = require('fibers');

module.exports.yield = function (promise) {

 var currentFiber = fiber.current;
 promise
 .then(function (value) {
 currentFiber.run(value);
 })
 .otherwise(function (reason) {
 currentFiber.throwInto(reason);
 });

 return fiber.yield();
};
module.exports.spawn = function (makeGenerator) {
 fiber(function () {
 makeGenerator.apply(this, Array.prototype.slice.call(arguments, 1));
 }).run();
};
</code></pre>

And a sample code on how it works: (query.find returns a promise) 

<pre><code> var generators = require('./utils/generators');
 var query = require('./utils/query');

 generators.spawn(function () {
 try {
 var field1 = generators.yield(query.find('user', { _id : '1' }));
 var field2 = generators.yield(query.find('user', { _id : '2' }));
 console.log('success', field1[0]._id, field2[0]._id);
 }
 catch (e) {
 console.error('error', e);
 }
 });
</code></pre>

blocks|key|882519|text|你可以在http://fitzgen.github.com/wu.js/上查看wu.js，它有很多有趣的迭代器函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|882520|entityMap|0|LINK|mutability|MUTABLE|url|http://fitzgen.github.com/wu.js/^0|4|W|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You might check out wu.js at <a href="http://fitzgen.github.com/wu.js/" rel="nofollow">http://fitzgen.github.com/wu.js/</a> It has lots of interesting iterator functions.

blocks|key|1097452|text|是也不是。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1097453|var+myGen+=+(function+()+{
++++var+i+=+0;
++++return+function+()+{
++++++++i%2B%2B;+return+i;+}
})();
var+i;
while+((i+=+myGen())+<+100+)+{
++++do+something;+}|code-block|syntax|javascript|1097454|如您所见，您可以使用闭包实现类似于闭包的东西，但它没有本机生成器。|1097455|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Yes and no.

<pre><code>var myGen = (function () {
 var i = 0;
 return function () {
 i++; return i; }
})();
var i;
while ((i = myGen()) &lt; 100 ) {
 do something; }
</code></pre>

As you see, you can implement something like one using closures, but it does not have native generators.

blocks|key|882784|text|我们对节点<+0.11.3+-+https://github.com/TooTallNate/gnode中的生成器使用gnode|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|882785|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/TooTallNate/gnode^0|1N|5|G|10|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

We are using <code>gnode</code> for generators in node &lt; 0.11.3 - <a href="https://github.com/TooTallNate/gnode" rel="nofollow">https://github.com/TooTallNate/gnode</a>

Is there any way to get <a href="https://developer.mozilla.org/en/JavaScript/Guide/Iterators_and_Generators" rel="noreferrer">generators</a> into node.js?

I'm currently faking them with callbacks, but I have to remember to check the response of the callback inside of my generator function which creates a lot of <code>if (callback(arg) === false) return;</code>

I want something like in python:

<pre><code>for p in primes():
 if p &gt; 100: break
 do_something(p)
</code></pre>

which I'm doing in node like this:

<pre><code>primes(function(p) {
 if (p &gt; 100) return false;
 do_something(p)
});
</code></pre>

Maybe something like <a href="http://jashkenas.github.com/coffee-script/" rel="noreferrer">coffeescript</a> could help?

Does node.js support yield?

有没有办法让进入node.js？我目前正在使用回调来伪装它们，但是我必须记得在我的生成器函数中检查回调的响应，这会创建大量的if (callback(arg) === false) return;我想要像python中那样的东西：for p in primes():  if p > 100: break  do_something(p)我在node中这样做：primes(function(p) {

问node.js支持yield吗？
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问node.js支持yield吗？
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