Extract and Format the First N Unique Values from a Vector

This function extracts the first N unique, non-missing values from a vector, formats them appropriately, and returns them as a truncated character string.

Usage

first_n(x, n = 5)

Arguments

x

A vector of any type (numeric, character, factor, or Date).

n

An integer specifying the number of unique values to return. Defaults to 5.

Value

A formatted character string containing up to the first N unique values from `x`, separated by `" ;; \n"`. If `x` is numeric, values are rounded to three decimal places. If `x` contains factors or dates, they are converted to character strings.

See also

str_trunc

Examples

first_n(c("apple", "banana", "cherry", "date", "elderberry", "fig"), 3)
#> [1] "apple ;; \nbanana ;; \ncherry"
first_n(c(1.234567, 2.345678, 3.456789), 2)
#> [1] "1.235 ;; \n2.346"
first_n(as.Date(c("2021-01-01", "2021-02-01", "2021-03-01")), 2)
#> [1] "2021-01-01 ;; \n2021-02-01"