first_nonmissing: First nonmissing element in a vector

In OuhscBbmc/OuhscMunge: Data Manipulation Operations

First nonmissing element in a vector

Description

Take the first value that isn't missing. Adapted from http://stackoverflow.com/a/40515261/1082435.

Usage

first_nonmissing(x, value_if_all_na = NULL, na_codes = NULL)

Arguments

x	A vector of values to collapse.
value_if_all_na	A scalar value to return if all elements are missing (i.e., they are all either NA, or one of the na_codes).
na_codes	A vector of codes that represent missing values.

Details

value_if_all_na and na_codesmust have the same data type as x.

If value_if_all_na is null, then an NA will be returned. If na_codes is null, then all non-NA values are considered.

Value

A scalar of converted names.

Author(s)

Will Beasley

Examples

first_nonmissing(c(NA, "b", "c"))
first_nonmissing(c(NA_character_, NA_character_))
first_nonmissing(character(0))

OuhscBbmc/OuhscMunge documentation built on Dec. 5, 2024, 4:34 a.m.