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This Handler class should be static or leaks might occur: IncomingHandler

...e a reference to your Service object. Handler objects for the same thread all share a common Looper object, which they post messages to and read from. As messages contain target Handler, as long as there are messages with target handler in the message queue, the handler cannot be garbage collecte...
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Understanding FFT output

...sqrt (real * real + imag * imag). This number will always be positive. Now all you have to search is for the maximum value (ignore the first entry in your array. That is your DC offset and carries no frequency dependent information). You get 32 real and 32 imaginary outputs because you are using a ...
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Why does ReSharper tell me “implicitly captured closure”?

... use. The compiler generates a class for both lambda expressions and puts all variables in that class which are used in the lambda expressions. So in my example g and i are held in the same class for execution of my delegates. If g is a heavy object with a lot of resources left behind, the garbage...
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What is the 'instanceof' operator used for in Java?

... Dog is Dog dog instanceof Object // true - Object is the parent type of all objects However, with Object animal = new Animal();, animal instanceof Dog // false because Animal is a supertype of Dog and possibly less "refined". And, dog instanceof Cat // does not even compile! This is beca...
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Link to all Visual Studio $ variables

... Now if only there were a way to access these programmatically in our code (in my case C#). – Chiramisu Feb 22 at 7:52 ...
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Difference between wait() and sleep()

... A wait can be "woken up" by another thread calling notify on the monitor which is being waited on whereas a sleep cannot. Also a wait (and notify) must happen in a block synchronized on the monitor object whereas sleep does not: Object mon = ...; synchronized (mon) { ...
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How to split a large text file into smaller files with equal number of lines?

...a large (by number of lines) plain text file that I'd like to split into smaller files, also by number of lines. So if my file has around 2M lines, I'd like to split it up into 10 files that contain 200k lines, or 100 files that contain 20k lines (plus one file with the remainder; being evenly divi...
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How do Python functions handle the types of the parameters that you pass in?

...object has a type, every object knows its type, it's impossible to accidentally or deliberately use an object of a type "as if" it was an object of a different type, and all elementary operations on the object are delegated to its type. This has nothing to do with names. A name in Python doesn't "...
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What guarantees are there on the run-time complexity (Big-O) of LINQ methods?

I've recently started using LINQ quite a bit, and I haven't really seen any mention of run-time complexity for any of the LINQ methods. Obviously, there are many factors at play here, so let's restrict the discussion to the plain IEnumerable LINQ-to-Objects provider. Further, let's assume that any...
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Java 8 Lambda function that throws exception?

..., isn't it. – aliopi Aug 2 '17 at 9:32 1 ...