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Approximate cost to access various caches and main memory?

... and Xeon range of processors. I should stress, this has what you need and more (for example, check page 22 for some timings & cycles for example). Additionally, this page has some details on clock cycles etc. The second link served the following numbers: Core i7 Xeon 5500 Series Data Source...
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How much of a git sha is *generally* considered necessary to uniquely identify a change in a given c

... Chapter 7 of the Pro Git book: Generally, eight to ten characters are more than enough to be unique within a project. One of the largest Git projects, the Linux kernel, is beginning to need 12 characters out of the possible 40 to stay unique. 7 digits is the Git default for a short SHA,...
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How to sum a variable by group

...h that "natural-language interpretation" of the tilde operator, it becomes more meaningful (and even intuitive). I personally find this symbolic formula representation better than some of the more verbose alternatives. – r2evans Dec 19 '16 at 4:35 ...
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How is a tag different from a branch in Git? Which should I use, here?

...create it, e.g., this is the version we shipped to XYZ Corp. A branch is more of a strategy to provide on-going updates on a particular version of the code while continuing to do development on it. You'll make a branch of the delivered version, continue development on the main line, but make bug ...
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Orchestration vs. Choreography

...gies do not give a rich behavioral detail about the role of the service in more complex collaboration. This collaboration includes a sequence of activities and relationships between activities, which build the business process. There are two ways to build this process: service orchestration and serv...
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Error message 'Unable to load one or more of the requested types. Retrieve the LoaderExceptions prop

...I could upvote every time I come back to this answer it would have about 5 more upvotes... and counting – sǝɯɐſ Aug 28 '15 at 20:06 2 ...
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How do I test if a variable is a number in Bash?

... @Ben do you really want to handle more than one minus sign? I'd make it ^-? rather than ^-* unless you're actually doing the work to handle multiple inversions correctly. – Charles Duffy Jun 26 '11 at 22:57 ...
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Why C# implements methods as non-virtual by default?

...ava, why does C# treat methods as non-virtual functions by default? Is it more likely to be a performance issue rather than other possible outcomes? ...
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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?

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Pacman: how do the eyes find their way back to the monster hole?

...cept the one you just came from; picking one which is nearest the goal. If more than one is equally near the goal, pick the first valid direction in this order: up, left, down, right. share | impro...