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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?

...sing in the branch prediction table moving the branch eliminated the alias and allowed the branch to be predicted correctly Your Core2 doesn't keep a separate history record for each conditional jump. Instead it keeps a shared history of all conditional jumps. One disadvantage of global branch pr...
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“The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine” Error in importing

I have a 64 bit windows 7 and SQLServer 2008 R2 (64 bit) 6 Answers 6 ...
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In which scenario do I use a particular STL container?

...p on STL containers in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of them is used. ...
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How will I know when to create an interface?

...s(); c.Process(); d.Process(); why not have them implement IProcessable, and then do List<IProcessable> list; foreach(IProcessable p in list) p.Process(); this will scale much better when you add, say, 50 types of classes that all do the same thing. Another concrete problem: Have...
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Confusion between numpy, scipy, matplotlib and pylab

Numpy, scipy, matplotlib, and pylab are common terms among they who use python for scientific computation. 3 Answers ...
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WPF Blurry fonts issue- Solutions

Problem is described and demonstrated on the following links: 11 Answers 11 ...
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How to exit from the application and show the home screen?

... Android's design does not favor exiting an application by choice, but rather manages it by the OS. You can bring up the Home application by its corresponding Intent: Intent intent = new Intent(Intent.ACTION_MAIN); intent.add...
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Bomb dropping algorithm

... simple sub-problem. There are 2 parts to the explanation, the algorithm, and the reason the algorithm provides an optimal solution. The first won't make sense without the second, so I'll start with the why. If you think of bombing the rectangle (assume a big rectangle - no edge cases yet) you...
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Best way to create unique token in Rails?

... heard to guess, it's more like a short url identifier than anything else, and I want to keep it short. I've followed some examples I've found online and in the event of a collision, I think the code below will recreate the token, but I'm not real sure. I'm curious to see better suggestions, thoug...
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How to check the differences between local and github before the pull [duplicate]

... using pull, I want to check if there are any differences between my local and github master. 3 Answers ...