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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?

...faster code if I optimize for size ( -Os ) instead of speed ( -O2 or -O3 ), and I have been wondering ever since why. 6...
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Custom Python list sorting

... | edited Feb 5 '15 at 17:33 Charlie 6,5234545 silver badges5050 bronze badges answered Aug 7 '12 at 16:...
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Minimizing NExpectation for a custom distribution in Mathematica

..., s, Log[x]]/x; If we plot pdf2 it looks exactly as your Plot Plot[pdf2[3.77, 1.34, -2.65, 0.40, x], {x, 0, .3}] Now to the expected value. If I understand it correctly we have to integrate x * pdf[x] from -inf to +inf for a normal expected value. x * pdf[x] looks like Plot[pdf2[3.77, 1.34...
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How to remove last n characters from every element in the R vector

...rame("data"=char_array,"data2"=1:4) a$data = substr(a$data,1,nchar(a$data)-3) a should now contain: data data2 1 foo_ 1 2 bar_ 2 3 ap 3 4 b 4 share | improve this answer | ...
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Specify pane percentage in tmuxinator project

... in tmuxinator.conf So based on the output from your gist: 0: tmux [208x73] [layout b147,208x73,0,0[208x62,0,0,208x10,0,63{104x10,0,63,103x10,105,63}]] (active) The relevant section of the tmuxinator conf file should be: - editor: layout: b147,208x73,0,0[208x62,0,0,208x10,0,63{104x10,0...
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Position of least significant bit that is set

...ly and lookup»: unsigned int v; // find the number of trailing zeros in 32-bit v int r; // result goes here static const int MultiplyDeBruijnBitPosition[32] = { 0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8, 31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9 };...
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Why does Lua have no “continue” statement?

... | edited Apr 1 '13 at 20:56 finnw 44.1k2121 gold badges130130 silver badges208208 bronze badges ...
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What characters are valid for JavaScript variable names?

... in a single ASCII-only regular expression for JavaScript, it would be 11,236 characters long. Here it is: // ES5.1 / Unicode 6.1 /^(?!(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|retur...
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How to show current year in view?

...18 Athix 3311 silver badge99 bronze badges answered May 30 '11 at 10:39 Emil AhlbäckEmil Ahlbäck ...
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Change x axes scale in matplotlib

... ChrisChris 36.9k1515 gold badges119119 silver badges141141 bronze badges ...