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Select first 4 rows of a data.frame in R
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156
Use head:
dnow <- data.frame(x=rnorm(100), y=runif(100))
head(dnow,4) ## default is 6
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int value under 10 convert to string two digit number
in here, if i = 1 then ToString yields "1"
6 Answers
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How can I remove a character from a string using Javascript?
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18 Answers
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YAML mime type?
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edited May 22 '18 at 14:46
Martin Tournoij
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UITableView - change section header color
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31 Answers
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Accessing nested JavaScript objects and arays by string path
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Disable spell checking on IntelliJ IDEA
I'm trying to disable spell checking in MacOS's IntelliJ IDEA version 8.1.
11 Answers
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How to check whether a string contains a substring in JavaScript?
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14067
ECMAScript 6 introduced String.prototype.includes:
const string = "foo";
const subst...
Pairwise crossproduct in Python [duplicate]
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153
You're looking for itertools.product if you're on (at least) Python 2.6.
>>> import ...
How to find common elements from multiple vectors?
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answered Sep 12 '10 at 17:00
bnaulbnaul
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