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Can I install Python 3.x and 2.x on the same Windows computer?
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edited Jun 29 '16 at 10:32
answered Jun 29 '16 at 8:18
Iv...
How do I parse a string to a float or int?
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answered Dec 19 '08 at 2:32
Dino ViehlandDino Viehland
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Summarizing multiple columns with dplyr? [duplicate]
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The dplyr package contains summarise_all for this aim:
library(dplyr)
df %>% group_by(grp) %>% summarise_all(list(mean))
#> # A tibble: 3 x 5
#> grp a b c d
#> <int> <dbl> <dbl> <dbl> <dbl>
#>...
How can I generate Unix timestamps?
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@ĽubomírMlích On a SmartOS host (SunOS 5.11 joyent_20171026T003127Z), I've both /usr/bin/date +%s and /usr/xpg4/bin/date +%s` working. Combined with the POSIX.2 recommendation, I think this works on all Solaris too.
– Dereckson
Nov 5 '1...
Favorite way to create an new IEnumerable sequence from a single value?
...falnawfal
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How do I associate a Vagrant project directory with an existing VirtualBox VM?
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– Casey Robinson
Feb 23 '17 at 16:32
# test1 and test2 boxes... for box in test1 test2; do virtualboxid=$(VBoxManage...
When to use std::forward to forward arguments?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
system(“pause”); - Why is it wrong?
...utable named "pause"!)
Simply write your own "Pause()" function that uses _getch. OK, sure, _getch is platform dependent as well (note: it's defined in "conio.h") - but it's much nicer than system() if you are developing on Windows and it has the same effect (though it is your responsibility to pro...
What is the difference between is_a and instanceof?
I am aware that instanceof is an operator and that is_a is a method.
9 Answers
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Generate list of all possible permutations of a string
...f a string between x and y characters in length"
– ck_
Mar 28 '13 at 23:06
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