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Select first 4 rows of a data.frame in R
....7 yes female no
3 9.550 16 69.7 no female yes
4 11.125 14 71.0 no male no
5 4.800 5 56.9 no male no
6 6.225 11 58.7 no female no
7 4.950 8 63.3 no male yes
8 7.325 11 70.4 no male no
9 ...
How do I reference a javascript object property with a hyphen in it?
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11 Answers
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How to get HTTP Response Code using Selenium WebDriver
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Mathieu VIALES
3,36411 gold badge2020 silver badges4141 bronze badges
answered Jun 28 '11 at 20:38
JimEvansJimEvans
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Is there a link to the “latest” jQuery library on Google APIs? [duplicate]
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Up until jQuery 1.11.1, you could use the following URLs to get the latest version of jQuery:
https://code.jquery.com/jquery-latest.min.js - jQuery hosted (minified)
https://code.jquery.com/jquery-latest.js - jQuery hosted (uncompressed)
htt...
Most efficient way to store thousand telephone numbers
...etera, up to the count of phone numbers for which the first m bits are 1...11 - this last count is 1000(decimal). There are 2^m such counts and each count is at most 1000. If we omit the last one (because we know it is 1000 anyway), we can store all of these numbers in a contiguous block of (2^m - 1...
Javascript - remove an array item by value [duplicate]
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Community♦
111 silver badge
answered Aug 22 '11 at 3:33
Joseph SilberJoseph Silber
184k47...
Are trailing commas in arrays and objects part of the spec?
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Specs: ECMAScript 5 and ECMAScript 3
Section 11.1.5 in the ECMAScript 5 specification:
ObjectLiteral :
{ }
{ PropertyNameAndValueList }
{ PropertyNameAndValueList , }
So yes, it is part of the specification.
Update: Apparently this is new in ES5. In ES...
Why does “split” on an empty string return a non-empty array?
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edited Feb 11 '11 at 19:33
answered Feb 11 '11 at 1:52
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Creating a dictionary from a csv file?
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answered Jul 19 '11 at 0:16
NateNate
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How to delete last item in list?
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answered Aug 11 '13 at 8:10
sebastiansebastian
3,29022 gold badges1717 silver badges2121 bronze badges
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