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:= not suppressing print in R 3.2.0 #1122

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:= not suppressing print in R 3.2.0#1122
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bug
Milestone
v1.9.6

Description

@jangorecki
jangorecki
opened on Apr 19, 2015

Worth to note that test.data.table passed successfully.

library(data.table)
# data.table 1.9.5  For help type: ?data.table
# *** NB: by=.EACHI is now explicit. See README to restore previous behaviour.
DT <- data.table(a=1L)
DT[, a:=2L]
#    a
#1: 2
sessionInfo()
# R version 3.2.0 (2015-04-16)
# Platform: x86_64-pc-linux-gnu (64-bit)
# Running under: Ubuntu 14.04.2 LTS
# 
# locale:
#  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
#  [3] LC_TIME=en_DK.UTF-8        LC_COLLATE=en_US.UTF-8    
#  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=C             
#  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
#  [9] LC_ADDRESS=C               LC_TELEPHONE=C            
# [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       
# 
# attached base packages:
# [1] stats     graphics  grDevices utils     datasets  methods   base     
# 
# other attached packages:
# [1] data.table_1.9.5
# 
# loaded via a namespace (and not attached):
# [1] chron_2.3-45

Activity

  1. jangorecki
    changed the title [-]`:=` do not suppress print in R 3.2.0[/-] [+]`:=` not suppressing print in R 3.2.0[/+] on Apr 19, 2015

  2. shrektan commented on Apr 21, 2015

    @shrektan
    shrektan
    on Apr 21, 2015
    Member

    I encounter the same problem .
    Here is my sessioninfo:

    R version 3.2.0 (2015-04-16)
Platform: i386-w64-mingw32/i386 (32-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1

locale:
[1] LC_COLLATE=Chinese (Simplified)_People's Republic of China.936 
[2] LC_CTYPE=Chinese (Simplified)_People's Republic of China.936   
[3] LC_MONETARY=Chinese (Simplified)_People's Republic of China.936
[4] LC_NUMERIC=C                                                   
[5] LC_TIME=Chinese (Simplified)_People's Republic of China.936    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] data.table_1.9.5

loaded via a namespace (and not attached):
[1] tools_3.2.0  chron_2.3-45

  3. jangorecki commented on Apr 21, 2015

    @jangorecki
    jangorecki
    on Apr 21, 2015
    MemberAuthor

    I found this not a big deal as data.table print nicely. If the current suppress print is costly in maintenance maybe it should be dropped at all?
    Maybe a special [ call to explicitly make results invisibility would be less costly in terms of dev and maintenance?
    Example where i = ! suppress output:

    dt[ any stuff ][!]

  4. shrektan commented on Apr 29, 2015

    @shrektan
    shrektan
    on Apr 29, 2015
    Member

    @arunsrinivasan
    I use data.table a lot in my work~ This package is really really good and I love it so much.
    It would be better, if this can be solved, so I can stop to write things like `invisible(DT[, x:=1])'.
    Anything I can do to help?
    Thanks.

  5. arunsrinivasan commented on Apr 29, 2015

    @arunsrinivasan
    arunsrinivasan
    on Apr 29, 2015
    Member

    @shrektan, thank you :-). On this issue, I think @mattdowle would've much better idea.

  6. abielr commented on May 9, 2015

    @abielr
    abielr
    on May 9, 2015

    On a related point, the programmers of the IRKernel package for Jupyter are having trouble determining if := should suppress output. See https://github.com/IRkernel/IRkernel/issues/127. Note that this is with R < 3.2.0.

  7. abielr commented on May 9, 2015

    @abielr
    abielr
    on May 9, 2015

    Changing

    typeof(last(SYS)[[2L]]) %chin% c("list","promise"))

    to

    typeof(last(SYS)[[2L]]) %chin% c("list","promise","symbol"))

    in the R/data.table.R/print.data.table() function seems to fix the issue (tested on R 3.2.0 on OSX), however I'm really not sure what is going on with these calls so I don't have a good sense of whether this would also cause unintended behavior elsewhere.

  8. arunsrinivasan
    added this to the v1.9.6 milestone on May 9, 2015

  9. arunsrinivasan commented on May 9, 2015

    @arunsrinivasan
    arunsrinivasan
    on May 9, 2015
    Member

    @abielr thanks for a possible solution. Have added to 1.9.6. I think it'd be nice to have this fixed for next release.

  10. arunsrinivasan
    added
    bug
    on May 9, 2015
  11. mattdowle
    closed this as completedin 5d95da3on Jun 19, 2015

  12. MichaelChirico commented on Jul 18, 2015

    @MichaelChirico
    MichaelChirico
    on Jul 18, 2015
    Member

    := within a function is back to printing out for me, e.g.:

    dt<-data.table(a=c(1,2,3))
f<-function(nm){dt[,(nm):=1]}
> f("b")
   a b
1: 1 1
2: 2 1
3: 3 1

    Relevant sessionInfo() bits:

    R version 3.2.1 (2015-06-18)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 14.04.2 LTS
...
data.table_1.9.5 #(updated this morning)

    Was there another update I'm missing?

  13. MaxGhenis commented on Sep 4, 2015

    @MaxGhenis
    MaxGhenis
    on Sep 4, 2015

    I believe := printing within a function is a separate issue, which has existed in the past. Would be great to fix that as well, but may make sense to file separately.

  14. arunsrinivasan commented on Sep 4, 2015

    @arunsrinivasan
    arunsrinivasan
    on Sep 4, 2015
    Member

    Update to R 3.2.2 and try again.

  15. MichaelChirico commented on Sep 6, 2015

    @MichaelChirico
    MichaelChirico
    on Sep 6, 2015
    Member

    @arunsrinivasan not printing out anymore, thanks for the tip.

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