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Daylight saving time and time zone best practices [closed]
...an use UTC, but future time scheduling and date-only values should not.)
Testing:
When testing, make sure you test countries in the Western, Eastern, Northern and Southern hemispheres (in fact in each quarter of the globe, so 4 regions), with both DST in progress and not (gives 8), and a country...
Displaying the build date
...it means nothing to most of the users, who want to know if they have the latest build - they tend to refer to it as "last Thursday's" rather than build 1.0.8.4321.
...
What is a regular expression for a MAC Address?
... @pilcrow could you please explain why this mac: C8:FD:19:55:E6:3A fails? It's an actual mac address. I modified your regex to accept : only /^(?:[[:xdigit:]]{2}([:]))(?:[[:xdigit:]]{2}\1){4}[[:xdigit:]]{2}$/ Thanks!
– Sam
May 27 '19 at 15:37
...
What does .SD stand for in data.table in R
...ttps://sashat.me/2017/01/11/list-of-20-simple-distinct-colors/
col16 = c('#e6194b', '#3cb44b', '#ffe119', '#0082c8', '#f58231', '#911eb4',
'#46f0f0', '#f032e6', '#d2f53c', '#fabebe', '#008080', '#e6beff',
'#aa6e28', '#fffac8', '#800000', '#aaffc3')
par(oma = c(2, 0, 0, 0))
sappl...
Fastest way to find second (third…) highest/lowest value in vector or column
...746.7627 1433.221 1500.7865 13768.148 100
For 1 million numbers:
N = 1e6 #evaluates to 1 million
x = rnorm(N)
microbenchmark::microbenchmark(
Rfast = Rfast::nth(x,5,descending = T),
maxN = maxN(x,5),
order = x[order(x, decreasing = T)[5]]
)
Unit: milliseconds
expr min ...
How to undo a git pull?
...
git reflog show gave this output: c9e5e4d HEAD@{0}: pull : Fast forward 1c86a22 HEAD@{1}: pull origin master: Fast forward 05c141a HEAD@{2}: pull : Fast forward Can I safely reset the HEAD to HEAD@{1}
– Kartins
Apr 28 '11 at...
How to list all Git tags?
...ef --tags
e7e66977c1f34be5627a268adb4b9b3d59700e40 refs/tags/osgeolive-6.5
8f27e65bddd7d4b8515ce620fb485fdd78fcdf89 refs/tags/v8.0
...
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How to do a git diff on moved/renamed file?
...ing commands, hence well-written
scripts will not be affected.
The new tests for this feature are here.
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Git commits are duplicated in the same branch after doing a rebase
... error, and then proceeded to run git pull:
To git@bitbucket.org:username/test1.git
! [rejected] dev -> dev (non-fast-forward)
error: failed to push some refs to 'git@bitbucket.org:username/test1.git'
hint: Updates were rejected because the tip of your current branch is behind
hint: its ...
How to compare two floating point numbers in Bash?
... scientific format, provided a capital letter E is employed, e.g. num1=3.44E6
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