if (FALSE) {
df <- data.frame(a = c("A", NA, "B", "C", "C"),
b = c(NA, 1, 1, 3, 3),
c = c(7, 8, 2, 3, 3),
stringsAsFactors = FALSE)
# Returns duplicated rows
df %>% find_duplicates()
# Returns duplicates in specific variables
df %>% find_duplicates(b:c)
# Returns rows where NA in variable b
df %>% find_na(b)
}
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