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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 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 :
1...
Is it safe to use Project Lombok? [closed]
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184
It sounds like you've already decided that Project Lombok gives you significant technical advant...
Getting the path of the home directory in C#?
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edited Sep 18 '17 at 13:47
StackzOfZtuff
1,4421515 silver badges1919 bronze badges
answered Jul 17 '09...
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...
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...
Overloading Macro on Number of Arguments
...FOO3(foo,bar,baz)
If you want a fourth one:
#define GET_MACRO(_1,_2,_3,_4,NAME,...) NAME
#define FOO(...) GET_MACRO(__VA_ARGS__, FOO4, FOO3, FOO2)(__VA_ARGS__)
FOO(a,b,c,d) # expeands to FOO4(a,b,c,d)
Naturally, if you define FOO2, FOO3 and FOO4, the output will be replaced by those o...
Get the data received in a Flask request
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1407
The docs describe the attributes available on the request. In most common cases request.data ...
What does ~~ (“double tilde”) do in Javascript?
...se +x or Number(x) instead.
How this is the NOT of the NOT
The number -43.2, for example is:
-43.210 = 111111111111111111111111110101012
as a signed (two's complement) 32-bit binary number. (JavaScript ignores what is after the decimal point.) Inverting the bits gives:
NOT -4310 = 00000000000...