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How to prevent ifelse() from turning Date objects into numeric objects
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You may use data.table::fifelse (data.table >= 1.12.3) or dplyr::if_else.
data.table::fifelse
Unlike ifelse, fifelse preserves the type and class of the inputs.
library(data.table)
dates <- fifelse(dates == '2011-01-01', dates - 1, dates)
str(dates)
# Date[1:5], forma...
How to convert JSON to XML or XML to JSON?
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weston
49.5k1818 gold badges121121 silver badges188188 bronze badges
answered May 2 '09 at 2:58
David BrownDavid Brown
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iOS Simulator failed to install the application
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Abdul Yasin
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answered Oct 22 '12 at 7:37
Ankur AryaAnkur Arya
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How to convert Milliseconds to “X mins, x seconds” in Java?
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1245
Use the java.util.concurrent.TimeUnit class:
String.format("%d min, %d sec",
TimeUnit.M...
How to debug apk signed for release?
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edited Jan 31 '12 at 16:31
answered Jan 31 '12 at 15:42
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Using Application context everywhere?
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answered Jun 12 '09 at 16:00
Reto MeierReto Meier
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Running MSBuild fails to read SDKToolsPath
...hese registry settings!
– si618
Aug 12 '11 at 2:12
8
Update on my earlier response. It appears th...
How to specify in crontab by what user to run script? [closed]
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answered Dec 12 '11 at 15:53
MikeMike
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What's the difference between an id and a class?
...anised or anything.
– heroix
Jun 7 '12 at 20:20
1
Just confused these two things for quite a long...
If i synchronized two methods on the same class, can they run simultaneously?
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