logical01 accept a list of length-2 or length-3 vectors which are converted to FALSE, TRUE, NA
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Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 45/100
Research direction
Start at the fread(..., logical01=...) entry point and reproduce the supplied example. Trace how logical01 vectors are interpreted, then verify that length-2 and length-3 lists produce logical columns with the intended FALSE, TRUE, and NA conversion. Done means the example succeeds and the behavior is covered by the relevant tests.
Written by the indexing model from the issue text.
Description
res <- fread(text = "A,B,C\nY,T,0\nN,F,1\n",
logical01 = list(c("N", "Y"), c("F", "T")))
all(sapply(res, is.logical))
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