deferred

Has anyone worked with the nodejs modules 'deferred' and 'mongoose'? I'm trying to get the deferred.promisify method to work on mongoose models' functions so I can chain them easily, but running into some troubles. Specifically, I'd like to promisify the find and findById functions so I can chain finding one document referenced by another document by ObjectID. Here's what I've got: https://gist.github.com/3321827 However, this seems less than ideal since the getAppPermissions and getApplication functions seem to be little more than wrappers for the find and findById methods of the mongoose

In Twisted, it seems that a deferred object can only be used once after its callback has fired, as opposed to other "promise"-based libraries I've worked with: from twisted.internet import defer class Foo(object): def __init__(self): self.dfd = defer.Deferred() def async(self): return self.dfd @defer.inlineCallbacks def func(self): print 'Started!' result = yield self.async() print 'Stopped with result: {0}'.format(result) if __name__ == '__main__': foo = Foo() foo.func() import time time.sleep(3) foo.dfd.callback('3 seconds passed!') foo.func() On standard out, one has: $ Started! $ Stopped

I'm trying to make sure the Google map is the last thing that loads on the page and doesn't affect the performance of the page negatively. When the defer attribute is placed after ...sensor=false", the map does not appear. What's the best way to use the defer attribute with Google maps? Is this even possible? <div id="map-canvas"></div> <script src="http://maps.googleapis.com/maps/api/js?key=AIzaSyDY0kkJiTPVd2U7aTOAwhc9ySH6oHxOIYM&sensor=false" defer></script> <script defer> function initialize() { var mapOptions = { center: new google.maps.LatLng(37.7599446, -122.4212681), zoom: 12,

This should be a simple one. I have a function that is called and I need to wait for all the async operations to complete. what I want is something like this... self.processSchema(data).done(function(results){ //do stuff}); The processSchema function loops using $.each and calls an async method. var processSchema = function(data) { var def = new $.Deferred(); $.each(table, function() { //calls an async SQLitePlugin method db.executeSql(sql, data, function(tx, results){ def.resolve(results); } } return(def.promise()); } This does not seem to work, I am new to $.Deferred so any guidance would be

In my Angular.js application, I'm running some asynchronous operation. Before it starts I cover the application with a modal div, then once the operation is complete, I need to remove the div, whether the operation was successful or not. Currently I have this: LoadingOverlay.start(); Auth.initialize().then(function() { LoadingOverlay.stop(); }, function() { LoadingOverlay.stop(); // Code needs to be duplicated here }) It works well, however I would prefer to have something cleaner like this pseudo-code: LoadingOverlay.start(); Auth.initialize().finally(function() { // *pseudo-code* - some

Possible Duplicate: angularjs - promise never resolved in controller I'm wrapping a slow WebSockets server in a AngularJS service, and then calling into that service from my controllers. If I chain callbacks onto callbacks onto callbacks, everything works just fine, any the UI updates asynchronously. When I try to use $q.defer() to clean up that mess of callbacks, it seems my deferred never gets called. I'm familiar with the concepts of deferred from Python's Twisted, so I think conceptually everything should work - but it doesn't. This is the shortest example I could come up with, the slow