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Covariance, Invariance and Contravariance explained in plain English?
...In Java, arrays are covariant)
This was still rather abstract. To make it more concrete, let's look at which operations in Java are defined in terms of the subtype relation. The simplest example is assignment. The statement
x = y;
will compile only if typeof(y) ≤ typeof(x). That is, we have j...
Are there any cases when it's preferable to use a plain old Thread object instead of one of the newe
...d not be taken away. However, for most people and most use cases there are more appropriate things to use which you mentioned, such as thread pools (which provide a nice way of handling many small jobs in parallel without overloading the machine by spawning 2000 threads at once), BackgroundWorker (w...
Decompile .smali files on an APK [duplicate]
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check android application is in foreground or not? [duplicate]
... the current foreground application from a background task or service fore more information..
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comparing sbt and Gradle [closed]
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There are two more differences I'd add: * In SBT, it's easier to self-manage dependencies, IMO. * The SBT test runner seems faster; I suspect there's some cunning concurrency involved here but I'm guessing. SBT seems like a more capable b...
Node.js / Express.js - How does app.router work?
...it will either call the next middleware by using next() or make it so no more middleware get called. That means that the order in which I place my middleware calls is important, because some middleware depends on other middleware, and some middleware near the end might not even be called.
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How do I remove the old history from a git repository?
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I agree, explaining what a graft is would be more than useful
– Charles Martin
Jul 23 '14 at 7:57
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Does Python optimize tail recursion?
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Does using final for variables in Java improve garbage collection?
...ferred to as "the nursery"). Since most objects are short-lived, the GC is more aggressive about freeing recent garbage from the young generation. If an object survives a collection cycle of the young generation, it gets moved into the old generation (sometimes referred to as the "tenured generation...