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`testl` eax against eax?

... It tests whether eax is 0, or above, or below. In this case, the jump is taken if eax is 0. share | improve this answer | f...
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What is more efficient? Using pow to square or just multiply it with itself?

... expression) \ double test##num(double b, long loops) \ { \ double x = 0.0; \ \ boost::posix_time::ptime startTime = now(); \ for (long i=0; i<loops; ++i) \ { \ x += expression; \ x += expression; \ x += expression; \ x += expression; \ x +=...
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Why does parseInt yield NaN with Array#map?

...ex of the element. In this case, you ended up calling parseInt with radix 0, 1 and 2 in turn. The first is the same as not supplying the parameter, so it defaulted based on the input (base 10, in this case). Base 1 is an impossible number base, and 3 is not a valid number in base 2: parseInt('1'...
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What does “Auto packing the repository for optimum performance” mean?

...s git gc --auto. If there are enough loose objects (by default, at least 6700), it will then invoke git repack -d -l to pack them. If there are too many separate packs, it will also repack them into one. A pack is a delta-compressed single file, containing a large number of objects. It's more effic...
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Multidimensional Array [][] vs [,] [duplicate]

... 501 One is an array of arrays, and one is a 2d array. The former can be jagged, the latter is unif...
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CSS horizontal centering of a fixed div?

... left: 50%; margin-left: -400px; /* Half of the width */ share | improve this answer | follow ...
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Install a Windows service using a Windows command prompt?

...in your .net folder (for .net 4 it's C:\Windows\Microsoft.NET\Framework\v4.0.30319 for example) and use it to install your service, like this: "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe" "c:\myservice.exe" ...
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What is SYSNAME data type in SQL Server?

... 150 sysname is a built in datatype limited to 128 Unicode characters that, IIRC, is used primarily t...
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What is an .axd file?

...source.axd – Kiquenet Nov 4 '15 at 10:22 add a comment  |  ...
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How to add an empty column to a dataframe?

...t; df = pd.DataFrame({"A": [1,2,3], "B": [2,3,4]}) >>> df A B 0 1 2 1 2 3 2 3 4 >>> df["C"] = "" >>> df["D"] = np.nan >>> df A B C D 0 1 2 NaN 1 2 3 NaN 2 3 4 NaN ...