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assign value using day(), minute(), etc., will yield error when providing empty input #517

iwccsbfb opened this issue Feb 9, 2017 · 1 comment


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@iwccsbfb iwccsbfb commented Feb 9, 2017

Example as below:

> a <- c(Sys.Date(), Sys.Date()+1)
> a
[1] "2017-02-09" "2017-02-10"
> day(a[c(F,F)])
> day(a[c(F,F)]) <- 10
Error in data.frame(..., check.names = FALSE) :
arguments imply differing number of rows: 0, 1

Whereas in normal R functions, it should just do nothing and do not yield an error:

> b <- 1:2
> b[c(F,F)]
> b[c(F,F)] <- 10
> b
[1] 1 2

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@vspinu vspinu commented Feb 9, 2017

Yes. This is a bug.


@vspinu vspinu added the bug label Feb 9, 2017
timgoodman pushed a commit to timgoodman/lubridate that referenced this issue Mar 8, 2017
@vspinu vspinu closed this in 7e4b209 Mar 9, 2017
vspinu added a commit that referenced this issue Mar 9, 2017
[Fix #517] `day<-`, `minute<-`, etc. should not produce an error when…
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