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:= assignment to under-allocated S4 slot fails #6704

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MichaelChirico opened this issue Jan 2, 2025 · 0 comments · Fixed by #6703

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bug non-atomic column

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MichaelChirico commented Jan 2, 2025

Another offshoot of #6575, but this issue also affects 1.16.4, so fixing it will be a separate bugfix.

setClass("DataTable", slots=c(x="data.table"))
options(datatable.alloccol=0L)
DT = new("DataTable", x=data.table(a=1))
DT@x[, b := 2L]
DT@x$b
# NULL

MichaelChirico added bug non-atomic column labels

MichaelChirico mentioned this issue

setDT() works on S4 slots (again), and := works in under-allocated S4 slots #6703

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MichaelChirico closed this as completed in #6703

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