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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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Difference between adjustResize and adjustPan in android?
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edited Jun 20 at 9:12
Community♦
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answered Jul 1 '13 at 17:47
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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
6
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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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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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How to convert list to string [duplicate]
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1399
By using ''.join
list1 = ['1', '2', '3']
str1 = ''.join(list1)
Or if the list is of intege...
SQL SERVER: Get total days between two dates
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PRINT DATEDIFF(DAY, '1/1/2011', '3/1/2011') will give you what you're after.
This gives the number of times the midnight boundary is crossed between the two dates. You may decide to need to add one to this if you're including both dates in the ...