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How to rename a single column in a data.frame?
I know if I have a data frame with more than 1 column, I can use
20 Answers
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Visual Studio 2010 isn't building before a run when there are code changes
...s set to one of these configurations. Just changed it to Debug_Unicode and now it is building!
– sergiol
Oct 3 '16 at 17:34
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What are the primary differences between TDD and BDD? [closed]
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Above 'Tom Ten Thij' link is dead by now.. here's live @ - tomtenthij.nl/2008/1/25/…
– Kundan Pandit
Jan 19 '15 at 6:41
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Convert a list to a data frame
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Update July 2020:
The default for the parameter stringsAsFactors is now default.stringsAsFactors() which in turn yields FALSE as its default.
Assuming your list of lists is called l:
df <- data.frame(matrix(unlist(l), nrow=length(l), byrow=T))
The above will convert all character columns...
How do you automatically set the focus to a textbox when a web page loads?
...vaScript when you don't want to support older browsers.
Edit 2: Firefox 4 now supports the autofocus attribute, just leaving IE without support.
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How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?
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Now MD5 & sha1 process changed Google After we got MD5 here.we need to get API key from Google API console right. thanks guys
– Crishnan Iyengar
Jul 12 '13 at 7:16
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How to parse/format dates with LocalDateTime? (Java 8)
...calDateTime to Time Zone ISO8601 String
LocalDateTime ldt = LocalDateTime.now();
ZonedDateTime zdt = ldt.atZone(ZoneOffset.UTC); //you might use a different zone
String iso8601 = zdt.toString();
Convert from ISO8601 String back to a LocalDateTime
String iso8601 = "2016-02-14T18:32:04.150Z";
Zon...
Using OpenGl with C#? [closed]
...r SDL2#.
Update 30th June 2020: OpenTK has had new maintainers for a while now and has an active discord community. So the previous recommendation of using another library isn't necessarily true.
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How to do a git diff on moved/renamed file?
I moved a file using git mv . Now I would like to do a diff on the new file to compare it with the old file (with the old, now non-existent name).
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Is there anything like inotify on Windows?
...I was wonderying myself how kernel people solve these situations. Good to know they do this, makes one more confident in design and implementation.
– n611x007
Oct 29 '13 at 10:50
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