polling

I'm just starting out learning OBJ-C but I do have an end-goal app that I'm working toward building; this app will be a master/detail app on the iPad that will be required to keep itself updated with a webservice in "real time". It will also need to send data to the remote MySQL DB when one of the multiple users (on separate iPad's) performs certain actions within the app. EDIT: As lxt has so helpfully clarified: ""Is it appropriate to use push notifications as a cue to poll a webservice" - the answer is sort of." The example I've imagined for the purposes of this question is a Widget

I'm trying for the life of me to get this plugin to work but I'm not understanding the status function so retry is not firing. $.poll(10000, function(retry){ $.get('willfail', function(response, status){ if (status == 'success') { // Do something alert("YES"); } else { alert("NO"); //retry(); } }) }) If I set the get request to '/' it will give me the alert YES message, but as it is, the alert No message never gets fired despite the ELSE. I'm using a jquery polling plugin: https://github.com/jeremyw/jquery-smart-poll Any ideas? That is probably a bad example. The callback passed to $.get will

Hi i am working on a paly2.0 framework application(with java) using backbone.js. In my application i need to get the table data from the database regularly ( for the use case of displaying the upcoming events list and if the crossed the old event should be removed from the list ).I am getting the data to display ,but the issue is to hit the Database regularly.For that i tried use backbone.js polling concept as per these links Polling a Collection with Backbone.js , http://kilon.org/blog/2012/02/backbone-poller/ .But they not polling the latest collection from db. Kindly suggest me how to

I'm playing around with RXJava, retrofit in Android. I'm trying to accomplish the following: I need to poll periodically a call that give me a Observable> (From here I could did it) Once I get this list I want to iterate in each Delivery and call another methods that will give me the ETA (so just more info) I want to attach this new info into the delivery and give back the full list with the extra information attached to each item. I know how to do that without rxjava once I get the list, but I would like to practice. This is my code so far: pollDeliveries = Observable.interval(POLLING

Platform: Linux 3.2.0 x86 (Debian 7) Compiler: GCC 4.7.2 (Debian 4.7.2-5) I am writing a function that reads a single character from stdin if a character is already present in stdin. If stdin is empty the function is suppose to do nothing and return -1. I googled nonblocking input and was pointed to poll() or select() . First I tried to use select() but I could not get it to work so I tried poll() and reached the same conclusion. I am not sure what these functions do exactly but from what I understand of poll()'s documentation if I call it like so: struct pollfd pollfds; pollfds = STDIN_FILENO