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Automatic indexing and ! operator #932

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arunsrinivasan opened this issue Nov 2, 2014 · 0 comments

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arunsrinivasan commented Nov 2, 2014

Thanks to Matthieu for the email.

require(data.table)
DT <- data.table(v1 = c(1,NA,2), v2 = c(1,NA,2))

DT[!(v1==1)]
#    v1 v2
#1:  2  2
DT[!v1==1] ## different result due to auto indexing
#    v1 v2
#1: NA NA
#2:  2  2
options(datatable.auto.index=FALSE)
DT[!v1==1] ## turning off restores default functionality
#    v1 v2
#1:  2  2

arunsrinivasan added the bug label

arunsrinivasan added this to the v1.9.8 milestone

arunsrinivasan modified the milestones: v1.9.6, v1.9.8

arunsrinivasan closed this as completed in

b7d90d2

arunsrinivasan self-assigned this

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