Hi data.table team, this is the first time I'm reporting an issue to this repo. I have tried to search in release docs, other issues, stackoverflow, and have not found anything similar reported yet. If that's not true then I apologise for the trouble. I did not try this on latest dev version.
# [Minimal reproducible example]
In V1.14.0, the following gives an error. However, the exact same code in V1.12.8 works fine with valid output.
> library(data.table)
> dt = data.table(id=c(1:3), grp=c('a', 'a', 'b'), value=c(4:6))
> dt
id grp value
1: 1 a 4
2: 2 a 5
3: 3 b 6
> dt[, by = grp, .(agg = list(setNames(as.list(value), id)))]
Error in lapply(x, runlock, current_depth = current_depth + 1L) :
'names' attribute [2] must be the same length as the vector [1]
Also, not sure if this is relevant but dplyr gives the same output in both versions of data.table, although with slightly different formatting, which I assume is merely a change of how data.table print out the list type in those two versions.
> dt %>% group_by(grp) %>% summarise(agg = list(setNames(as.list(value), id))) %>% data.table
`summarise()` ungrouping output (override with `.groups` argument)
grp agg
1: a <list[2]>
2: b <list[1]>
# Output of sessionInfo()
R version 4.0.3 (2020-10-10)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Catalina 10.15.7
Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] data.table_1.14.0
loaded via a namespace (and not attached):
[1] compiler_4.0.3 tools_4.0.3
Hi data.table team, this is the first time I'm reporting an issue to this repo. I have tried to search in release docs, other issues, stackoverflow, and have not found anything similar reported yet. If that's not true then I apologise for the trouble. I did not try this on latest dev version.
# [Minimal reproducible example]
In V1.14.0, the following gives an error. However, the exact same code in V1.12.8 works fine with valid output.
> library(data.table) > dt = data.table(id=c(1:3), grp=c('a', 'a', 'b'), value=c(4:6)) > dt id grp value 1: 1 a 4 2: 2 a 5 3: 3 b 6 > dt[, by = grp, .(agg = list(setNames(as.list(value), id)))] Error in lapply(x, runlock, current_depth = current_depth + 1L) : 'names' attribute [2] must be the same length as the vector [1]Also, not sure if this is relevant but dplyr gives the same output in both versions of data.table, although with slightly different formatting, which I assume is merely a change of how data.table print out the list type in those two versions.
# Output of sessionInfo()