joyn (version 0.2.4)

check_duplicate_names: Check if vars in dt have duplicate names

Description

Check if vars in dt have duplicate names

Usage

check_duplicate_names(dt, name)

Value

logical either TRUE, if any duplicates are found, or FALSE otherwise

Arguments

dt

data.frame to check

name

var name to check if has duplicates in dt

Examples

if (FALSE) {
# When no duplicates
x1 = data.table(id = c(1L, 1L, 2L, 3L, NA_integer_),
                t  = c(1L, 2L, 1L, 2L, NA_integer_),
                x  = 11:15)
joyn:::check_duplicate_names(x1, "x")

# When duplicates
x1_duplicates = data.frame(id = c(1L, 1L, 2L, 3L, NA_integer_),
                           x  = c(1L, 2L, 1L, 2L, NA_integer_),
                           x  = 11:15,
                           check.names = FALSE)
joyn:::check_duplicate_names(x1_duplicates, "x")
}