I've read over several examples of code using JavaScript generators such as this one.  The simplest generator-using block I can come up with is something like:  function read(path) {     return function (done) {         fs.readFile(path, "f...
I've got this recursive generator    var obj = [1,2,3,[4,5,[6,7,8],9],10]  function *flat(x) {     if (Array.isArray(x))         for (let y of x)             yield *flat(y)     else         yield 'foo' + x;  }  console.log([...flat(obj)])...
Because "yield"-statement isn't allowed within a callback, how can i use the "put" feature of redux-saga within a callback?  I'd like to have the following callback:  function onDownloadFileProgress(progress) {   yield put({ty...
When passing parameters to next() of ES6 generators, why is the first value ignored? More concretely, why does the output of this say x = 44 instead of x = 43:  function* foo() {     let i = 0;     var x = 1 + (yield "foo" + (++i));     conso...
The ES6 method: iterator.throw(err) is often described as injecting an exception as though it occurred at the yield statement in the generator.  The problem is that the stack trace for this exception does not contain any reference to the file/line fo...
I built a simple node script using nightmare.js to scrape websites  var Nightmare = require('nightmare'); var vo = require('vo');  vo(run)(function(err, result) {     if (err) throw err; });  function *run() {     var x = Date.now();...
Consider this python code  it = iter([1, 2, 3, 4, 5])  for x in it:     print x     if x == 3:         break  print '---'  for x in it:     print x   it prints 1 2 3 --- 4 5, because the iterator it remembers its state across the loops. When...
The following code... Assume that the yield is inside a generator function and that something and else are defined, etc.  const value = something || yield else();   ...produces the following in V8 (Chrome or Nodejs):                  const start = in...
I used node.js(0.11.13) with --harmony flag and used function *() and yield keywords.  I tried to simplify my development on node.js with help of coffeescript, so far it works great but I went into troubles with yield and declaring a generator - it c...
In the following code:    function so() {   console.log('inside the timer') }  function* sogen() {   const callback = yield;    setTimeout(callback, 2000);    return 1; }  function() {   var gen = sogen();   gen.next(so), gen.next(so); }()...

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