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How to optimize for-comprehensions and loops in Scala?

...imizer can eliminate the foreach but cannot yet eliminate the throw/catch. And throw/catch is expensive. But since such nested returns are rare in Scala programs, the optimizer did not yet address this case. There is work going on to improve the optimizer which hopefully will solve this issue soon. ...
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How to get the mouse position without events (without moving the mouse)?

...t; elements that changes a property (let's say font-family). In your load handler, cycle through each of the 4 million <a> elements, checking currentStyle / getComputedStyle() until you find the one with the hover font. Extrapolate back from this element to get the co-ordinates within the docu...
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How do I 'overwrite', rather than 'merge', a branch on another branch in Git?

I have two branches, email and staging . staging is the latest one and I no longer need the old changes in email branch, yet I don't want to delete them. ...
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What's so wrong about using GC.Collect()?

Although I do understand the serious implications of playing with this function (or at least that's what I think), I fail to see why it's becoming one of these things that respectable programmers wouldn't ever use, even those who don't even know what it is for. ...
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Libraries do not get added to APK anymore after upgrade to ADT 22

I have a rather big Android App project that is referencing several library projects. Everything was fine until i upgraded the eclipse ADT plugin to the newest version (v22). I also upgraded the SDK of course. I do not see any compile errors in eclipse, but when i run the project on the phone i get ...
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Difference between freeze and seal

I just heard about the JavaScript methods freeze and seal , which can be used to make any Object immutable. 8 Answers ...
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How to show math equations in general github's markdown(not github's blog)

...ed by the SunDown (ex libUpSkirt) library. The motto of the library is "Standards compliant, fast, secure markdown processing library in C". The important word being "secure" there, considering your question :). Indeed, allowing javascript to be executed would be a bit off of the MarkDown standar...
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What is the difference between Reader and InputStream?

What is the difference between Reader and InputStream? And when to use what? If I can use Reader for reading characters why I will use inputstream, I guess to read objects? ...
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What is a callback function?

...allback function is a function which is: accessible by another function, and is invoked after the first function if that first function completes A nice way of imagining how a callback function works is that it is a function that is "called at the back" of the function it is passed into. Maybe ...
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How to “return an object” in C++?

...t of the problem (I know the difference between having things on the stack and putting them on the heap). 8 Answers ...