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Is there some way to PUSH data from web server to browser?

... Yes, what you're looking for is COMET http://en.wikipedia.org/wiki/Comet_(programming). Other good Google terms to search for are AJAX-push and reverse-ajax. share |...
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What does LINQ return when the results are empty

I have a question about LINQ query. Normally a query returns a IEnumerable<T> type. If the return is empty, not sure if it is null or not. I am not sure if the following ToList() will throw an exception or just a empty List<string> if nothing found in IEnumerable result? ...
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how to delete all cookies of my website in php

...on logout, because I used this as function to delete cookies but it isn't work properly: 11 Answers ...
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What is the difference between the add and offer methods in a Queue in Java?

Take the PriorityQueue for example http://java.sun.com/j2se/1.5.0/docs/api/java/util/PriorityQueue.html#offer(E) 8 Answe...
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How can two strings be concatenated?

How can I concatenate (merge, combine) two values? For example I have: 12 Answers 12 ...
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Calling clojure from java

Most of the top google hits for "calling clojure from java" are outdated and recommend using clojure.lang.RT to compile the source code. Could you help with a clear explanation of how to call Clojure from Java assuming you have already built a jar from the Clojure project and included it in the cl...
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java: ArrayList - how can i check if an index exists?

... returns the number of items in the list - so if the index is greater than or equal to the size(), it doesn't exist. if(index >= myList.size()){ //index not exists }else{ // index exists } share | ...
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Should I use s and s inside my s?

... the nav element and the list provide different semantical information: The nav element communicates that we're dealing with a major navigation block The list communicates that the links inside this navigation block form a list of items At http://w3c.github.io/html/sections.html#th...
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UICollectionView reloadData not functioning properly in iOS 7

I've been updating my apps to run on iOS 7 which is going smoothly for the most part. I have noticed in more than one app that the reloadData method of a UICollectionViewController isn't acting quite how it used to. ...
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How to free memory in Java?

Is there a way to free memory in Java, similar to C's free() function? Or is setting the object to null and relying on GC the only option? ...