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Is it better to use std::memcpy() or std::copy() in terms to performance?

...In my test, I hash 5 strings using all four SHA-2 versions (224, 256, 384, 512), and I loop 300 times. I measure times using Boost.timer. That 300 loop counter is enough to completely stabilize my results. I ran the test 5 times each, alternating between the memcpy version and the std::copy version....
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stringstream, string, and char* conversion confusion

.... – William Knight Mar 12 '10 at 22:51  |  show 3 more comments ...
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What are the differences between a multidimensional array and an array of arrays in C#?

... not. 23.084 16.634 15.215 15.489 14.407 13.691 14.695 14.398 14.551 14.252 25.782 27.484 25.711 20.844 19.607 20.349 25.861 26.214 19.677 20.171 5.050 5.085 6.412 5.225 5.100 5.751 6.650 5.222 6.770 5.305 The first row are timings of jagged arrays, the se...
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Why em instead of px?

...Ilmari Karonen 43k88 gold badges7979 silver badges135135 bronze badges answered Mar 4 '09 at 7:18 flodinflodin 4,91522 gold badges...
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How to use git bisect?

...ple output: git bisect log git bisect start # bad: [00b9fcdbe7e7d2579f212b51342f4d605e53253d] 9 git bisect bad 00b9fcdbe7e7d2579f212b51342f4d605e53253d # good: [db7ec3d602db2d994fe981c0da55b7b85ca62566] 0 git bisect good db7ec3d602db2d994fe981c0da55b7b85ca62566 # good: [2461cd8ce8d3d1367ddb036c8f71...
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How to “warm-up” Entity Framework? When does it get “cold”?

...s. – manishKungwani Jul 4 '13 at 19:51 @Andreas So Entity framework5 need it or not? what's different if use it on ef...
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In which order should floats be added to get the most precise result?

... Steve JessopSteve Jessop 251k3131 gold badges420420 silver badges659659 bronze badges ...
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What's the difference between using “let” and “var”?

...d=1023609. – Gajus Dec 17 '14 at 14:51 24 So, I just cannot think of any case where using var is ...
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Why Qt is misusing model/view terminology?

...m aren't. – leemes Jan 19 '14 at 10:51  |  show 4 more comments ...
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Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V

...s no sense. – IVlad Jan 5 '11 at 18:51 1 ...