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How does one reorder columns in a data frame?
...mns like so df[,c(1,2,3,4)].
Note the first comma means keep all the rows, and the 1,2,3,4 refers to the columns.
To change the order as in the above question do df2[,c(1,3,2,4)]
If you want to output this file as a csv, do write.csv(df2, file="somedf.csv")
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How to force table cell content to wrap?
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Use table-layout:fixed in the table and word-wrap:break-word in the td.
See this example:
<html>
<head>
<style>
table {border-collapse:collapse; table-layout:fixed; width:310px;}
table td {border:solid 1px #fab; width:100px; word-wr...
How to find the last field using 'cut'
....google.com" to be moc.elgoog.spam
cut uses dot (ie '.') as the delimiter, and chooses the first field, which is moc
lastly, we reverse it again to get com
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How to “git show” a merge commit with combined diff output even when every changed file agrees with
...o way to do this with git show. But it would certainly be nice sometimes, and it would probably be relatively easy to implement in the git source code (after all, you just have to tell it to not trim out what it thinks is extraneous output), so the patch to do so would probably be accepted by the g...
Extract substring using regexp in plain bash
I'm trying to extract the time from a string using bash, and I'm having a hard time figuring it out.
4 Answers
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Optimum way to compare strings in JavaScript? [duplicate]
... Unfortunately, stringCompare is not reliable. Opera, IE, Firefox, Chrome and Safari all return 1 for 'dog'.localeCompare('cat'), which is to be expected, and -1 when you reverse the caller and the argument. BUt capital letters behave oddly- 'dog'.localeCompare('Dog') Of the browsers I tested,...
LINQ - Left Join, Group By, and Count
...;t.ChildID != null didn't work for me. The result was always a null object and Resharper complained that the expression was always true. So I used (t => t != null) and that worked for me.
– Joe
Dec 2 '10 at 1:35
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How do you get the list of targets in a makefile?
I've used rake a bit (a Ruby make program), and it has an option to get a list of all the available targets, eg
20 Answers
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Resharper- Find all unused classes
...w to find unused references of a single file by right clicking on the file and selecting the "Find Usages" option. Is there any way I can see or get the list of all the unused classes or files in my project ?
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Difference between applicationContext.xml and spring-servlet.xml in Spring Framework
...ise conflict in the same context. As an example you may have ReST services and standard views, you may then have different view resolvers or security concerns for the services as to the views.
– Brett Ryan
Apr 3 '13 at 17:19
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