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Sticky and NON-Sticky sessions

... According to what informations does the LoadBalancer make a HTTP session sticky? Especialy on HTTPS connections this issue becomes interesting. Do you feed the LB with the web servers private key, so that it is able to break up the SSL connection and fetch...
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What is a stream?

...sits on the "end" of an input stream, it is an input stream itself, and it does something extra that the original stream didn't. Stream is a useful abstraction because it can describe files (which are really arrays, hence seek is straightforward) but also terminal input/output (which is not seekabl...
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How do I replace NA values with zeros in an R dataframe?

... d[is.na(d)] <- 0 does not make sense to me. It seems backwards? How does R process this statement? – user798719 Apr 4 '15 at 11:03 ...
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What's the difference between returning void and returning a Task?

...rning async method cannot be awaited; it is a "fire and forget" method. It does work asynchronously, and you have no way of telling when it is done. This is more than a little bit weird; as SLaks says, normally you would only do that when making an asynchronous event handler. The event fires, the ha...
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How can I repeat a character in Bash?

... Tip of the hat to @gniourf_gniourf for his input. Note: This answer does not answer the original question, but complements the existing, helpful answers by comparing performance. Solutions are compared in terms of execution speed only - memory requirements are not taken into account (they va...
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“Thinking in AngularJS” if I have a jQuery background? [closed]

...nt jQuery with AngularJS Similarly, don't start with the idea that jQuery does X, Y, and Z, so I'll just add AngularJS on top of that for models and controllers. This is really tempting when you're just starting out, which is why I always recommend that new AngularJS developers don't use jQuery at ...
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Why use Object.prototype.hasOwnProperty.call(myObj, prop) instead of myObj.hasOwnProperty(prop)?

...ce gains... It may make it quicker in theory, as the [[Prototype]] chain doesn't have to be followed, but I suspect this to be negligible and not the reason the implementation is why it is. ... or am I missing any cases where hasOwnProperty might be used on objects which don't have this meth...
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Suppressing “is never used” and “is never assigned to” warnings in C#

... Thanks a lot. Its a strange choice that VS doesn't include a column for these numbers in the Error List window. – AnthonyWJones Sep 29 '10 at 11:21 ...
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When and why would you seal a class?

...s vague but, assuming we don't write "security features" most of the time, does that mean reason #1 hardly applies? Reason #2 is for performance-tuning. How much performance difference are we talking about? Are they significant enough to justify altering a non-security class's definition? Even if th...
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What is an undefined reference/unresolved external symbol error and how do I fix it?

... linking, it simply assumes that that symbol was defined somewhere, but it doesn't yet care where. The linking phase is responsible for finding the symbol and correctly linking it to b.cpp (well, actually to the object or library that uses it). If you're using Microsoft Visual Studio, you'll see tha...