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R - Concatenate two dataframes?
...umn b to data frame b.
Results
> a <- data.frame(a=c(0,1,2), b=c(3,4,5), c=c(6,7,8))
> a
a b c
1 0 3 6
2 1 4 7
3 2 5 8
> b <- data.frame(a=c(9,10,11), c=c(12,13,14))
> b
a c
1 9 12
2 10 13
3 11 14
> b$b <- NA
> b
a c b
1 9 12 NA
2 10 13 NA
3 11 14 NA
> ne...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
...
492
Yes, the order of elements in a python list is persistent.
...
Making a Location object in Android with latitude and longitude values
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edited Mar 13 '17 at 7:04
Phan Van Linh
38.2k1717 gold badges187187 silver badges203203 bronze badges
...
Python Infinity - Any caveats?
...t an inf value through usual arithmetic calculations:
>>> 2.0**2
4.0
>>> _**2
16.0
>>> _**2
256.0
>>> _**2
65536.0
>>> _**2
4294967296.0
>>> _**2
1.8446744073709552e+19
>>> _**2
3.4028236692093846e+38
>>> _**2
1.157920892373162...
What is the difference between Lisp-1 and Lisp-2?
...
answered Jan 2 '11 at 14:52
pauldoopauldoo
15.7k2020 gold badges8484 silver badges111111 bronze badges
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switch() statement usage
... expr min lq median uq max
1 test1("mean") 709 771 864 951 16122411
2 test2("mean") 1007 1073 1147 1223 8012202
> microbenchmark(test1('trimmed'), test2('trimmed'), times=1e6)
Unit: nanoseconds
expr min lq median uq max
1 test1("trimmed") 733 7...
Closing multiple issues in Github with a commit message
... fixes is a valid synonym:
This fixes a memory leak in foo() that closes #4,
also fixes #5 which is a duplicate.
The following used to work, but nowadays only references issues #2 and #3.
Closes #1, #2, #3
share
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tmux: How to join two tmux windows into one, as panes?
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JayQuerie.com
16.1k1111 gold badges4747 silver badges6969 bronze badges
answered Mar 7 '12 at 1:40
RNARNA
118k111...
Difference between dispatch_async and dispatch_sync on serial queue?
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410
Yes. Using serial queue ensure the serial execution of tasks. The only difference is that disp...