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What's the difference between lapply and do.call?
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AndrieAndrie
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4
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MPICH vs OpenMPI
... MPICH though, unless you build Open-MPI yourself, because e.g. Ubuntu 16.04 only provides the ancient version 1.10 via APT. I am not aware of any significant performance differences between the two implementations. Both support single-copy optimizations if the OS allows them.
Linux with Mellanox ...
Undefined, unspecified and implementation-defined behavior
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418
Undefined behavior is one of those aspects of the C and C++ language that can be surprising to...
Why is the Java main method static?
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342
The method is static because otherwise there would be ambiguity: which constructor should be ca...
Getting the path of the home directory in C#?
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edited Sep 18 '17 at 13:47
StackzOfZtuff
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answered Jul 17 '09...
psql: FATAL: role “postgres” does not exist
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432
NOTE: If you installed postgres using homebrew, see the comment from @user3402754 below.
Not...
How to set versionName in APK filename using gradle?
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14 Answers
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Active
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Xcode find caller functions
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Xcode 4.5 (in beta) has this functionality. when you highlight say... a function, you can check the "caller" and "callee"
edit i believe it's located at the top left of the file panel for that file... so double click on the functi...
How to change XAMPP apache server port?
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324
To answer the original question:
To change the XAMPP Apache server port here the procedure :
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pandas DataFrame: replace nan values with average of columns
... A B C
0 -0.166919 0.979728 -0.632955
1 -0.297953 -0.912674 -1.365463
2 -0.120211 -0.540679 -0.680481
3 NaN -2.027325 1.533582
4 NaN NaN 0.461821
5 -0.788073 NaN NaN
6 -0.916080 -0.612343 NaN
7 -0.887858 1.033826 NaN
8 1.948430 1.025011...