Drop columns whose names match a pattern

drop_colr present since hutils 1.0.0.

drop_grep is identical but only present since hutils 1.2.0.

drop_colr(DT, pattern, ..., checkDT = TRUE)

Arguments

DT	A `data.table`.
pattern	A regular expression as in `grepl`.
...	Arguments passed to `grepl`.
checkDT	If `TRUE` (the default), will error if `DT` is not a `data.table`.

library(data.table)
dt <- data.table(x1 = 1, x2 = 2, y = 3)
drop_grep(dt, "x")
#>    y
#> 1: 3