check if data.table contains duplicated data

An auxiliary function that checks for duplicates in the data.table (or its subset)

Usage

has_dt_duplicated_rows(dt, col_names = NULL)

Arguments

dt

data.table

col_names

charvec with columns to be used for subsetting

Value

logical flag indicating if a dt contains duplicated rows or not

Examples

dt <- data.table::data.table(a = c(1, 2, 3), b = c(3, 2, 2))
has_dt_duplicated_rows(dt, "b")
#> [1] TRUE