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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?
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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 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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Javascript Array.sort implementation?
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I believe V8 is now using TimSort: github.com/v8/v8/blob/78f2610345fdd14ca401d920c140f8f461b631d1/…
– celwell
Jan 1 '19 at 1:18
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Getting attributes of Enum's value
... edited Jul 1 '19 at 19:53
15ee8f99-57ff-4f92-890c-b56153
35k77 gold badges4848 silver badges9797 bronze badges
answered Nov 25 '09 at 19:28
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Check if the number is integer
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This doesn't look very reliable to me: check.integer(1e4) is TRUE, while check.integer(1e5) is FALSE.
– wch
Feb 14 '12 at 18:02
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Change Bootstrap input focus blue glow
...dd !important to the stylings:
.form-control:focus {
border-color: #6265e4 !important;
box-shadow: 0 0 5px rgba(98, 101, 228, 1) !important;
}
Replace the border-color and the rgba on the box-shadow with which ever colour style you'd like*.
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How can I remove a commit on GitHub? [duplicate]
...one) here's another possibility:
git reset --hard 71c27777543ccfcb0376dcdd8f6777df055ef479
Obviously swap in that number for the number of the commit you want to return to.
Everything since then will be deleted once you push again. To do that, the next step would be:
git push --force
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