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Parsing IPv6 extension headers containing unknown extensions

... you don't know how to interpret. Routers can route such packets, because all they need is the routing header. Deep packet inspection gadgets and suchlike need to know a lot, but then that's their fate anyway. Edited to add: This design means that middleboxes can only change what they know. If a m...
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Why is arr = [] faster than arr = new Array?

...BER, IDENTIFIER) new Array: NEW, IDENTIFIER new Array(): NEW, IDENTIFIER, CALL new Array(5): NEW, IDENTIFIER, CALL (NUMBER) new Array(5,4): NEW, IDENTIFIER, CALL (NUMBER, NUMBER) new Array(5, foo): NEW, IDENTIFIER, CALL (NUMBER, IDENTIFIER) Hopefully this should provide you a sufficient visualizat...
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git: Apply changes introduced by commit in one repo to another repo

...om, and generate patches from commits you want with git format-patch Optionally, copy patches (0001-* etc.) to your repository Use git am --3way to apply patches share | improve this answer ...
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How to expire session due to inactivity in Django?

...just have to make some urls and views to return relevant data to the ajax calls regarding the session expiry. when the user opts to "renew" the session, so to speak, all you have to do is set requeset.session['last_activity'] to the current time again Obviously this code is only a start... but it ...
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How to send a JSON object using html form data

...l form data then you have to decode it using json_decode. You'll then get all data in an array. $.ajax({ type: "POST", url: "serverUrl", data: formData, success: function(){}, dataType: "json", contentType : "application/json" }); ...
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How to perform .Max() on a property of all objects in a collection and return the object with maximu

...actly this in MoreLINQ. You can look at the implementation there, but basically it's a case of iterating through the data, remembering the maximum element we've seen so far and the maximum value it produced under the projection. In your case you'd do something like: var item = items.MaxBy(x => ...
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Nullable vs. int? - Is there any difference?

...ression term ';' If you are curious about the exact reason for this, I really recommend you to check the already linked question, but the basic problem is that in the parsing phase after an is (or an as) operator, when we face a ? token we check if the next token can be interpreted as a unary oper...
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Show an image preview before upload

... HTML5 comes with File API spec, which allows you to create applications that let the user interact with files locally; That means you can load files and render them in the browser without actually having to upload the files. Part of the File API is the FileReader...
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Dynamic variable names in Bash

...Fgilrtux] [-p] [name[=value] ...]. You might double-check that you are actually running 4.x and not 3.2. – chepner Dec 2 '13 at 16:08 5 ...
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What's the difference between Invoke() and BeginInvoke()

...y, on a threadpool thread. Control.Invoke: Executes on the UI thread, but calling thread waits for completion before continuing. Control.BeginInvoke: Executes on the UI thread, and calling thread doesn't wait for completion. Tim's answer mentions when you might want to use BeginInvoke - although i...